Automation and Control - INTERSCAN: One Stop …interscan.org/download/Gemu_Brochure_1.pdfof manual,...

Globe ValvesAutomation and Control

Prod

uct o

verv

iew

and

tech

nica

l dat

a

VALVES, MEASUREMENTAND CONTROL SYSTEMS

2

Innovative technology

Globe valves I Innovative technology

GEMÜ is a leading world-wide manufacturer of high quality valves, measurement and control systems.

Fritz Müller established GEMÜ in 1964, and since then, the company developed internationally with a large number of production centres, subsidiaries and trading companies on every continent.

GEMÜ provides engineered control solutions for a large number of process and engineering plant, such as :

Industrial plant and machine construction•

Automobile industry•

Water / waste water treatment•

Chemical industry•

Steel works•

Mining and metal extraction•

Power stations•

Shipbuilding industry•

Petrochemical industry•

Paper industry•

Pharmaceutical and biotechnological industries•

Foodstuff and beverage industries•

Microelectronics and semiconductor industries•

GEMÜ - your valve and instrumentation partner.

State-of-the-art factory equipment and machinery plus a motivated team ensure the best service through our worldwide network of distributors and stockholding subsidiaries. We are constantly making investments in order to optimise our existing products and to develop new products. Thus we can provide technical solutions for individual applications.

3

Introduction

Innovative technology, introduction 2The correct valve selection creates security 4 - 5Globe valves - Overview and system combinations 6 - 7Selection and use of globe valves 8 - 11GEMÜ 5072/2-way angle seat globe valve, manually operated 64 - 65GEMÜ 5142/2-way angle seat globe valve, pneumatically operated 24 - 27GEMÜ 5502/2-way angle seat globe valve, pneumatically operated 16 -20GEMÜ 551 (Keg valve)2/2-way angle seat globe valve, pneumatically operated 21 - 23GEMÜ S560 SilverLine®

2/2-way angle seat globe valve, pneumatically operated 28 - 29GEMÜ 5542/2-way angle seat globe valve, pneumatically operated 12 - 15GEMÜ 5122/2-way globe valve, pneumatically operated 40 - 43GEMÜ 5202/2-way globe valve, pneumatically operated 44 - 46 GEMÜ 5302/2-way globe valve, pneumatically operated 30 - 35GEMÜ 5342/2-way globe valve, pneumatically operated 36 - 39GEMÜ 558 SideStep®

2/2-way control valve, motorized 57 - 59GEMÜ 563/5682/2-way control valve, motorized 60 - 63GEMÜ 3123/2-way globe valve, pneumatically operated 47 - 49GEMÜ 3143/2-way globe valve, pneumatically operated 53 - 54GEMÜ 3523/2-way globe valve, pneumatically operated 50 - 52GEMÜ 3543/2-way globe valve, pneumatically operated 55 - 56Valve body dimensionsAngle seat globe valves GEMÜ 507, 514, 550, 554 66 - 67

Valve body dimensions - Angle seat globe valves GEMÜ 507, 550 68Valve body dimensions - Globe valve GEMÜ 512 69Valve body dimensions - Globe valve GEMÜ 520 70Valve body dimensions - Globe valves GEMÜ 530, 534 71GEMÜ regulating and control systems 72 - 73Selection of globe valves for positioning and control tasks 74 - 75Notes for selecting positioners 76Overview of GEMÜ positioners 77GEMÜ 1434 µPos - electro-pneumatic positioner 78GEMÜ 1435 EPos - electro-pneumatic positioner 79GEMÜ 1436 cPos - electro-pneumatic positioner with integrated process controller 80 - 81GEMÜ 1283 - 3-point controller 82Specifi cation sheet for designing regulating cones for globe valves 83 - 84Regulating cones for globe valves 85Instrumentation and accessories 86 - 87Field bus components 88Pilot valves and valve manifolds 89Instrumentation/accessories for pneumatic valves 90How to order / Type key 92 - 95Kv value 96 - 97Basic terms of control technology 98Type of control 99 - 100Type and accuracy of the control 101Temperature control / pH value control 102Filling level control / dosing 103Gas pressure control / steam pressure control 104Temperature control / back pressure control 105Terms of control technology 106Controlled systems 107Controller types 108Product overview 110 - 111

Contents

Globe valves I Introduction / Contents

Cost pressure; the need to save limited and expensive raw materials, regulations, environmental protection and customers'constantly increasing demands mean that operating parameters are forever getting tighter. For these reasons simple open/close controls are being increasingly replaced by automatic control systems. The physical values of pressure, temperature, volumetric fl ow, pH-value, etc. must be forever adjusted and controlled more precisely. With increasing automation the data is recorded automatically, stored and passed on to superior control systems. At the same time pneumatically operated valves are replaced with motorized valves. The reason for this is often the increasing cost of providing compressed air or the venting of

exhaust air in the unit. That means that other actuation concepts are becoming increasingly economically driven.

GEMÜ takes these demands into account when developing new products. For globe valves and other types of valve a range of manual, pneumatic and motorized operators are available. The technical possibilities of globe valves are shown in this brochure. Because of space limitations we can only show the most important products and applications.

4

The correct valve selection creates security

Globe valves I The correct valve selection creates security

Within the various areas of application, valves are subject to widely diff erent requirements. Chemical and physical properties of the working media have a direct infl uence on material selection of the components. Moreover, both mechanical and process-specifi c requirements have an immediate eff ect on the valve. To do justice to the given operating conditions on an individual basis, GEMÜ off ers its customers a wide range of valve types as well as many material, connection and actuation options.

Basically, the respective manufacturer's information and the interaction concerning the operating pressure / temperature must be taken into account. This brochure describes GEMÜ industrial globe valves. If you determine from the following information that a diff erent valve type is necessary for your specifi c operational requirements, please ask us.

Evaluation criterion Diaphragm valve Globe valve Butterfl y valve Ball valve Gate valveCorrosion resistance ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●Abrasion resistance ● ● ● ● ● ● ● ● ● ● ● ● ●Number of cycle duties ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●Controllability of liquids ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●Controllability of gases and steam ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●Pressure range ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●Temperature range ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●Use in a vacuum ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●Leak-free closure against gases, liquids and solids ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●

Valve pressure loss 100% open ● ● ● ● / ● ● ● ● ● * ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●

Low fl ow turbulence, valve 100% open ● ● ● ● / ● ● ● ● ● * ● / ● ● ** ● ● ● ● ● ● ● ● ● ● ● ● ●

Low fl ow turbulence, valve partially open ● ● ● ● ● ● / ● ● ** ● ● ● ● ● ● ● ● ●

Application-related variety of materials ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●

Compact design ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●Weight/size ratio ● ● ● ● ● ● ● ● ● ● ● ● ●

* applicable for full bore diaphragm valves ** applicable for angle seat globe valves

● ● ● ● ●: means well-suited /perfectly fulfi lled

● : means poorly suited / not fulfi lled

The above information is a rough overview: process-linked shifts in the analysis may occur. It is assumed that the optimum valve design and material is selected for each application.

5Globe valves I The correct valve selection creates security

Globe valveFeatures

Depending on diameter and materials of construction, up to • 40 bar operating pressure and 180°C operating temperature (higher temperatures on request)

For high and very high cycle duties and dosing•

Very good control characteristics•

2/2 and 3/2-way valves available•

Areas of use

Clean chemically inert, slightly corrosive liquid media but • also gases and steam

Typical areas of application

Industrial gas manufacturing and distribution•

Biogas production•

Industrial and sterile steam generation and distribution•

Heat exchanger systems•

Polystyrene foam production and packaging industry•

Beverage industry•

Dyeing and cleaning•

Filling systems•

6

Globe valves - Overview and system combinations

Globe valves I Overview and system combinations

2/2-way angle seat globe valvespneumatically operated

Control systems- Temperature control- Flow control- Level control

* Globe valves optimized for control applications on request.

2/2-way globe valvespneumatically operated

GEMÜ 554

GEMÜ 550

GEMÜ 514

GEMÜ 534

GEMÜ 530

GEMÜ 512

GEMÜ 520

GEMÜS560

Positioners Standard regulating cones*- linear- equal-percentage 1:25

New! New!

GEMÜ1434 µPos

GEMÜ1435 EPos

GEMÜ1436 cPos

7Globe valves I Overview and system combinations

Controls- continuous

Open/ Close

3/2-way globe valvespneumatically operated

2/2-way control valvesmotorized

2/2-way globe valvesmanually operated

GEMÜ 558

GEMÜ 563

GEMÜ 568

GEMÜ 507

GEMÜ 312

GEMÜ 314

GEMÜ 352

GEMÜ 354

Process controllers AccessoriesGEMÜ 1283

GEMÜ 4222

GEMÜ 324

Pilot valves, electrical position indicators, stroke limiters, manual overrides

GEMÜ1436 cPos

8

Selection and use of globe valves

Globe valves I Selection and use of globe valves

The optimum confi guration of globe valves is essential for a high reliability level and long service life. Additionally, proper confi guration reduces valve procurement and operating costs. Unfortunately, in practice sometimes too little time and eff ort are invested in fi nding the optimum confi guration of a globe valve for control applications. In many cases, only the pipe diameter and connection type are used as the selection criteria. Becauseuncertainty may exist regarding the operating and control pressure ranges, safety margins chosen are often greater than necessary, resulting in selecting oversized actuators.

It is better to establish the Kv value and to select the proper actuator using pressure data which is as accurate as possible. The GEMÜ 550 range in particular off ers six diff erent actuator sizes for diameters DN 8 – 80. Thus the correct valve size can be chosen for the intended purpose. The explanations presented below serve as additional help. The globe valves on the following pages are a selection of the most frequently requested valves and versions. We shall be happy to give you further information on request, or you can fi nd some in the data sheets. Our sales and technical support staff will be happy to help you make the right choice.

Confi guration of globe valves

When confi guring globe valves the following factors have to be taken into account:

Maximum valve operating pressure diff erential•

Required fl ow (Kv value)•

Type of working medium•

Operating and ambient temperatures (min. / max.)•

Flow direction, mounting position and size •

Valve seat • and gland packing seal, dependent on process parameters and working media

Required control function•

Operator•

Control pressure (min. / max.) for pneumatically operated • valves

Compressed air quality for pneumatically operated valves•

Maximum valve operating pressure diff erential

The operating pressure details shown in the data sheets refer to the maximum operating pressure diff erential applied at the valve and not to the supply pressure of the working medium. The resistance of the valve body to pressure must also be taken into account, considering the maximum pressure occurring relative to the surroundings. The resistance to pressure of the body is in many cases higher than the maximum operating pressure and is therefore not the determining value.

It is common to fi nd wildly diff ering operating pressure informationon diff erent manufacturers' data sheets. These diff erences are due to higher minimum control pressures or smaller seat diameters and consequently lower Kv values. The various valve sizes and their connections are standardised, however, there are no clear specifi cations for seat diameter tolerances. This means, for example, that a DN 15 valve does not necessarily have an eff ective seat diameter of 15 mm. The eff ective seat diameter for this nominal size is often only 13 mm. On standard GEMÜ globe valves (with only a few exceptions) the given nominal size is the same as the eff ective seat diameter.

If vacuum is present in the process, this must also be taken into account. All GEMÜ valves are either designed for vacuum as standard or are available with an adjusted gland packing. The maximum permissible vacuum is 10 mbar, depending on the type of valve.

9Globe valves I Selection and use of globe valves

Required fl ow (Kv value)

Calculating the Kv value is the correct way to confi gure a valve. This is shown on pages 96-97 of this brochure. From the for-mulae it can be seen that not only the type of working medium is important, but also that the smallest diff erence in operating pressure at the valve is particularly crucial. The Kv values shown in the GEMÜ data sheets are the Kv values with a fully open valve (100% stroke).

As already mentioned above, selection only according to nominal and connection size may steer towards increased seat diameters and larger actuators on many valves, which in turn leads to higher purchase and operating costs.

Type of working medium

GEMÜ globe valves can be used for clean liquid and gaseous media and for steam. The tightness of the valve at its seat and to the outside depends among other things on the chemical composition of the working medium. The standard versions are designed for liquid media and arenormally fi tted with a PTFE seal at the seat. The elastomer seals from GEMÜ are well suited to gaseous media.

We have globe valves with stainless steel bellows for corrosive or gaseous media. Because of the high switching frequency, bellows sealings are often used for control applications.

Globe valves are only of limited use for media containing solids. Diaphragm valves are often the fi rst choice for particulate media.

Operating and ambient temperatures (min. / max.)

The maximum permissible ambient and media temperatures given in the data sheets show the maximum permissible loads for the valve in operation. This means that the maximum ambient temperature and the maximum temperature of the working media may be reached at the same time. Special gland pack-ings and seals for an operating temperature of +300°C are avail-able for globe valves.

If diff erent temperature combinations are necessary, GEMÜ Support will help you.

10

Flow direction, installation position and size

The preferred fl ow direction for globe valves is with the media fl ow under the seat. This helps to avoid water hammer which could damage the valve or even the whole plant. If it is required to install the valve with the operating pressure fl ow over the seat, water hammer prevention measures must be taken, especially when using liquids. Flow over the seat may lead to increased wear and possibly premature valve failure.

Although the incompressibility of the medium is not as critical with gases and steam, here, too, the preferred fl ow direction is under the seat.

The valve's installation position is optional. GEMÜ recommends a vertically upright installation position. If any positioners, position indicators or displays are retrofi tted good visibility and improved access remain assured.

Angle seat globe valves are often preferred because of their smaller installation space requirements in relation to the Kv value achieved. When using fl ange and clamp connections their reduced lengths may however lead to interference with the actuators. For this reason standard globe valves are often used for such connections. There is no functional diff erence between standard globe valves and angle seat globe valves.

Valve seat and gland packing seal

The standard PTFE seat seals and EPDM/PTFE packings areadequate for most applications. At higher operating temperatures, steel-steel seats and stainless steel bellows covering the valve spindles become necessary. Special applications for gases may require NBR seals or other special versions are available on request.

What is so special about GEMÜ gland packings is the oppos-ing arrangement of the packings and the pre-tension spring. They are arranged so that even at high actuating speeds the gland packing is always under tension and is consequently always sealed.

Selection and use of globe valves

Globe valves I Selection and use of globe valves

Flow under the seat

Flowover the seat

Supply:Steam, gas

11Globe valves I Selection and use of globe valves

Control function

GEMÜ on/off valves with pneumatic actuator are available as standard with control function 1 (normally closed, NC), control function 2 (normally open, NO) and control function 3 (double acting, DA). Should you need special versions, please contact our technical advisers.

In addition to their simple on/off functions GEMÜ has system solutions for all globe valves with electro-pneumatic and electric positioners/controllers for control tasks. As well as the requirements based on the application, the use of control valves can achieve a longer service life for plant components. In many cases the continual adjustments of control valves minimise plant components wear compared to purely on/off versions.

Operators

GEMÜ off ers a wide range of manual, pneumatic and motorized operators. Pneumatically operated valves are still preferred for automated applications because of lower procurement costs. However, the operating costs of motorized actuators are usually lower. On the “Total cost-of-ownership” principle not only are procurement costs of the valve added into the economic calculation, but also operating costs plus the cost of compressed air generation and distribution for the unit's entire service life. The result of this argument weighs favourably towards electric plant concepts. This is especially true when taking into account planning and building new plant far removed from an existing air supply, or if compressed air distribution becomes unwieldy due to size and distance.

Control pressure for pneumatically operated valves

The control pressure depends on the operating pressure, installation (fl ow direction over or under the seat), eff ective valve seat and actuator piston diameters, control function, spring forces and friction forces within the valve actuator. The maximum control pressure is normally limited to keep wear within acceptable limits. The minimum control pressure depends on the specifi c operating pressure and the valve confi guration. In practice, lower or higher control pressures are possible which depends on the general application conditions.

Compressed air quality for pneumatically operated valves

The GEMÜ standard actuators are designed for air as normallyavailable from professionally installed and maintained compressed air supply units. Sometimes the permissible air quality parameters in terms of particle load and humidity are considerably exceeded. A higher dirt particle load leads to premature piston seal wear and consequently to a shorter service life. High humidity also leads to corrosion damage. For special applications the actuators can be fi tted with stainless steel springs.

Actuator control function 1Normally closed (NC)

Actuator control function 2Normally open (NO)

Actuator control function 3Double acting (DA)

12

GEMÜ 5542/2-way angle seat globe valve, pneumatically operated

Globe valves I GEMÜ 554

Operator: Piston actuator, plastic

Nominal sizes: DN 15 – DN 80

Media temperature: -10 to 180°C

Ambient temperature: max. 60° C

Option: Control version with regulating cone

Explosion protection: According to EC directive 94/9/EC (ATEX 95a) for zone 1 and 2 on request

Optional accessories: Position indicators,positioners and process controllers

Connection CodeButt weld spigotsSpigots DIN 0Spigots DIN 11850, series 1 16Spigots DIN 11850, series 2 17Spigots DIN 11850, series 3 18Spigots SMS 3008 37Spigots ASME BPE 59Spigots EN ISO 1127 60Threaded connectionsThreaded sockets DIN ISO 228 1Threaded sockets BS 21 Rc 3BThreaded spigots DIN ISO 228 9Threaded sockets NPT 31Clamp connectionsClamps following ASME BPE for pipeEN ISO 1127, length EN 558-1, series 1 82

Clamps DIN 32676 for pipe 11850,length EN 558-1, series 1 86

Clamps ASME BPE for pipe ASME BPE,length EN 558-1, series 1 88

Valve body material CodeRg 5 cast bronze 91.4435 (ASTM A 351 CF3M) investment casting* 341.4408 investment casting 37ASTM A 351 CF3M investment casting* C1

* Material equivalency 316 L

Control function CodeNormally closed (NC) 1Normally open (NO) 2Double acting (DA) 3

Seat seal CodePTFE 5

Flow direction

Flowunder the seat*

Flowover the seat

GEMÜ 554 actuators3, 4

GEMÜ 554actuators0, 1, 2

* Preferred fl ow direction with incompressible liquid media to avoid "water hammer“

Actuator size Flow CodeActuator 0 piston ø 50 mm under the seat* 0Actuator 1 piston ø 70 mm under the seat* 1Actuator 2 piston ø 120 mm under the seat* 2Actuator 3 piston ø 50 mm over the seat* 3Actuator 4 piston ø 70 mm over the seat* 4


13Globe valves I GEMÜ 554

Nominal size Kv value Max. operating pressure [bar]

control function 1 (NC)* Control pressure control function 1 (NC)

DN [m3/h] Actuator 0piston

ø 50 mm

Actuator 3piston

ø 50 mm

Actuator 1piston

ø 70 mm

Actuator 4piston

ø 70 mm

Actuator 2piston

ø 120 mm

Act.0

Actuator3

Actuator1

Actuator4

Actuator2

15 5.4 12 10 25 10 - 4.8 - 7

min. controlpressure see

diagram,max. control

pressure 7 bar

5.5 - 7

min. controlpressure see

diagram,max. control

pressure 7 bar

-20 10.0 6 10 20 10 25 4.8 - 7 5.5 - 7 4 - 725 15.2 2.5 10 10 10 25 4.8 - 7 5.5 - 7 4 - 732 23.0 - - 7 10 20 - 5.5 - 7 4 - 740 41.0 - - 4.5 10 12 - 5.5 - 7 4 - 750 68.0 - - 3 10 10 - 5.5 - 7 5 - 765 95.0 - - - - 7 - - 5 - 780 130.0 - - - - 5 - - 5 - 7

* Please note that cast bronze valve bodies, when in pipe systems according to DIN are only suitable up to PN 16 max., cast stainless steel bodies up to PN 25. All pressures are gauge pressures.

Operating and control pressure for control function 3 (DA) see technical data sheet.

Operating pressure / Control pressure characteristicsActuator size 3 / Control function 1 (NC) Actuator size 4 / Control function 1 (NC)

Min. control pressure dependent on operating pressure Min. control pressure dependent on operating pressure

Actuator size 0 / Control function 2 (NO) Actuator size 1 / Control function 2 (NO)Min. control pressure dependent on operating pressure Min. control pressure dependent on operating pressure

Con

trol p

ress

ure

in b

arC

ontro

l pre

ssur

e in

bar

Con

trol p

ress

ure

in b

arC

ontro

l pre

ssur

e in

bar

Operating pressure in bar




14



Operating pressure / Control pressure characteristicsActuator size 2 / Control function 2 (NO) Actuator size 0 / Control function 3 (DA)


Actuator size 1 / Control function 3 (DA) Actuator size 2 / Control function 3 (DA)Min. control pressure dependent on operating pressure Min. control pressure dependent on operating pressure

Actuator dimensions GEMÜ 554 [mm]Actuator size ø B e F

0 + 3 72 M 16x1 701 + 4 96 M 16x1 86

2 168 M 22x1.5 149

Con

trol p

ress

ure

in b

ar

Con

trol p

ress

ure

in b

ar

Con

trol p

ress

ure

in b

ar

Con

trol p

ress

ure

in b

ar

Operating pressure in bar Operating pressure in bar



Overview of metal bodies for GEMÜ 554Material code RG 5 (Code 9) 1.4408 (Code 37) 1.4435 (Code 34) C1Connection

code 1 9 31 3B 1 9 17 37 59 60 0 16 17 18 37 59 60 31 3B

DN 15 X X X X X X X - - X X X X X - X X X XDN 20 X X X X X X X - - X X X X X - X X X XDN 25 X X X X X X X - - X X X X X X X X X XDN 32 X - X X X X - - - X - X X X - - X - -DN 40 X X X X X X - - - X X X X X X X X X XDN 50 X X X X X X - - - X X X X X X X X X XDN 65 X X X X X X X X X X - - - - - - - - -DN 80 X X X X X X X X X X - - - - - - - - -

Wrench size SW 1 Installation dimensions [mm] Actuator size 0 and 3 1 and 4 2

Material codeSW1

H/LA H/LA H/LA9 34, 37, C1

DN15 36 36 155 182 -20 41 41 165 192 27925 46 46 165 192 27932 55 55 - 200 28740 60 60 - 206 29350 75 75 - 214 30165 100 60 - - 31380 110 60 - - 330

16



Operator: Piston actuator, stainless steel, blasted


Media temperature: -10°C to 180 °C (up to 300°C on request)




Optional accessories: Stroke limiter, position indicators, positioners and process controllers

Actuator size CodeActuator 0 piston ø 28 mm 0Actuator 1 piston ø 42 mm 1Actuator 2 piston ø 60 mm 2Actuator 3 piston ø 80 mm 3Actuator 4 piston ø 100 mm 4Actuator 5 piston ø 130 mm 5

Flow direction CodeUnder the seat* GOver the seat M

Valve body material Code1.4435 (ASTM A 351 CF3M) investment casting* 341.4408 investment casting 371.4435 (316 L) forged body 40ASTM A 351 CF3M investment casting* C1



Flowunder the seat*

Flowover the seat


G M


Connection CodeButt weld spigotsSpigots DIN 0Spigots DIN 11850, series 1 16Spigots DIN 11850, series 2 17Spigots DIN 11850, series 3 18Spigots SMS 3008 37Spigots ASME BPE 59Spigots EN ISO 1127 60Threaded connectionsThreaded sockets DIN ISO 228 1Threaded sockets BS 21 Rc 3BThreaded spigots DIN ISO 228 9Threaded sockets NPT 31FlangesFlanges EN 1092 / PN16 / form Blength EN 558-1, series 1 ISO 5752, basic series 1 8

Flanges EN 1092 / PN25 / form Blength EN 558-1, series 1 10

Clamp connectionsClamps following ASME BPE for pipeEN ISO 1127, length EN 558-1, series 1 82




Nominalsize

Kv values

Max. operating pressure [bar]Normally closed (NC)Flow under the seat

Max. operating pressure [bar]Normally closed (NC)

Flow over the seat

DN [m³/h]

Actuator size 0Gpiston

ø 28 mm


ø 42 mm


ø 60 mm


ø 80 mm


ø 100 mm


ø 130 mm

Actuator size 0M piston

ø 28 mm


ø 42 mm


ø 60 mm


ø 80 mm6 2,1 10 - - - - - 10 - - -8 2.1 10 - - - - - 10 - - -

10 2.4 10 - - - - - 10 - - -15 2.4 10 - - - - - 10 - - -10 3.8 - 15 - - - - - 10 - -12 5.0 - 15 - - - - - 10 - -15 6.2 - 11 25 - - - - 10 10 -20 11.5 - 6 15 25 - - - 10 10 1025 17.0 - - 8 16 25 - - - 10 1032 25.0 - - 5 10 18 25 - - - 1040 44.0 - - - 6 12 20 - - - 1050 68,0 - - - 3 7 15 - - - 1065 95.0 - - - - - 10 - - - -80 130.0 - - - - - 8 - - - -

All pressures are gauge pressures. When the fl ow is over the seat (M), there may be the danger of water hammer with liquid media! Please note that cast bronze valve bodies, when in pipe systems according to DIN are only suitable up to PN 16 max., cast stainless steel bodies up to PN 25. Kv values determined acc. to IEC 534 standard, body with threaded sockets DIN ISO 228.The Kv value data refers to control function 1 (NC) and the largest actuator for each nominal size.Kv values may be diff erent for other combinations.

Nominalsize

Control pressure [bar]Normally closed (NC)Flow under the seat

Control pressure [bar]Normally closed (NC)

Flow over the seat

DNActuatorsize 0Gpiston

ø 28 mm

Actuatorsize 1Gpiston

ø 42 mm


ø 60 mm


ø 80 mm


ø 100 mm

Actuatorsize 5G piston

ø 130 mm

Actuatorsize 0Mpiston

ø 28 mm

Actuatorsize 1M piston

ø 42 mm


ø 60 mm


ø 80 mm6 4 - 8 - - - - - 5 - 8 - - -8 4 - 8 - - - - - 5 - 8 - - -

10 4 - 8 - - - - - 5 - 8 - - -15 4 - 8 - - - - - 5 - 8 - - -10 - 4 - 8 - - - - - 5 - 8 - -12 - 4 - 8 - - - - - 5 - 8 - -15 - 4 - 8 4 - 8 - - - - 5 - 8 5 - 8 -20 - 4 - 8 4 - 8 4 - 8 - - - 5 - 8 5 - 8 5 - 825 - - 4 - 8 4 - 8 4 - 8 - - - 5 - 8 5 - 832 - - 4 - 8 4 - 8 4 - 8 5 - 8 - - - 5 - 840 - - - 4 - 8 4 - 8 5 - 8 - - - 5 - 850 - - - 4 - 8 4 - 8 5 - 8 - - - 5 - 865 - - - - - 5 - 8 - - - -80 - - - - - 5 - 8 - - - -

Higher control pressures on request.

18



DN15-2MDN20-2M

DN25-2M

DN10/12-1MDN15-1M

DN8/10/15-0M

0,0

1,0

2,0

3,0

4,0

5,0

6,0

0 2 4 6 8 10Betriebsdruck [bar]

Steu

erdr

uck

[bar

]

DN15DN20DN25

DN32

DN40

DN50

0,0

1,0

2,0

3,0

4,0

5,0

6,0


Steu

erdr

uck

[bar

]

DN15-2G1

DN20-2G1

DN25-2G1

DN10/12-1G1

DN15-1G1

DN8/10/15-0G1

0,0

1,0

2,0

3,0

4,0

5,0

6,0

7,0

8,0


Steu

erdr

uck

[bar

]

DN15

DN20

DN25

DN32

0,0

1,0

2,0

3,0

4,0

5,0

6,0

7,0

8,0


Steu

erdr

uck

[bar

]

DN40DN50

Operating pressure / Control pressure characteristicsActuator size 1 0M, 1 1M, 1 2M / Control function 1 (NC) Actuator size 1 3M / Control function 1 (NC)


Actuator size 2 0G1, 2 1G1, 2 2G1 / Control function 2 (NC) Actuator size 2 3G1 / Control function 2 (NO)Min. control pressure dependent on operating pressure Min. control pressure dependent on operating pressure

DN15

DN32

DN40

DN50

0,0

1,0

2,0

3,0

4,0

5,0

6,0

7,0

8,0


Steu

erdr

uck

[bar

]

DN40

DN50

DN65

0,0

1,0

2,0

3,0

4,0

5,0

6,0

7,0

8,0


Steu

erdr

uck

[bar

]

DN32

DN80

Actuator size 2 4G1 / Control function 2 (NC) Actuator size 2 5G1 / Control function 2 (NO)Min. control pressure dependent on operating pressure Min. control pressure dependent on operating pressure

Con

trol p

ress

ure

in b

arC

ontro

l pre

ssur

e in

bar

Con

trol p

ress

ure

in b

ar

Con

trol p

ress

ure

in b

arC

ontro

l pre

ssur

e in

bar

Con

trol p

ress

ure

in b

ar








DN15-2G1

DN20-2G1

DN25-2G1

DN8/10/15-0G1

DN10/12-1G1

DN15-1G1

DN20-1G1

0,0

1,0

2,0

3,0

4,0

5,0

6,0

7,0

8,0


Steu

erdr

uck

[bar

]

DN25

DN15

DN20

DN32

DN40

0,0

1,0

2,0

3,0

4,0

5,0

6,0

7,0

8,0


Steu

erdr

uck

[bar

]

DN50

DN40

DN15

DN32

DN50

0,0

1,0

2,0

3,0

4,0

5,0

6,0

7,0

8,0


Steu

erdr

uck

[bar

]

DN50

DN40

DN65

0,0

1,0

2,0

3,0

4,0

5,0

6,0

7,0

8,0


Steu

erdr

uck

[bar

]

DN32

DN80

Operating pressure / Control pressure characteristicsActuator size 3 0G1, 1G1, 2G1 / Control function 3 (DA) Actuator size 3 3G1 / Control function 3 (DA)


Actuator size 3 4G1 / Control function 3 (DA) Actuator size 3 5G1 / Control function 3 (DA)Min. control pressure dependent on operating pressure Min. control pressure dependent on operating pressure

Actuator dimensions GEMÜ 550 [mm]Actuator size ø B e H G

Code 0 32 M 12x1 6 M5Code 1 46 M 16x1 12 G⅛Code 2 63 M 16x1 22 G⅛Code 3 84 M 16x1 28 G¼Code 4 104 M 22x1.5 32 G¼Code 5 135 M 22x1.5 41 G¼

B

45°

G

GH

e

G

B

45°

He

G

Con

trol p

ress

ure

in b

arC

ontro

l pre

ssur

e in

bar

Con

trol p

ress

ure

in b

arC

ontro

l pre

ssur

e in

bar





20



Wrench size Installation dimensions [mm]

Actuator size 0 1 2 3 4 5Material code SW1 H/LA H/LA H/LA H/LA H/LA H/LA

DN8 24 85 - - - - -

10 24 85 - - - - -15 24 85 - - - - -10 36 - 128 - - - -12 36 - 128 - - - -15 36 - 131 169 - - -20 41 - 141 179 - - -25 46 - - 179 199 - -32 55 - - 187 207 238 26240 60 - - - 213 244 26850 75 - - - 221 252 27665 60 - - - - - 28880 85 - - - - - 305

Overview of metal bodies for GEMÜ 550 with actuator size 0

Material code 1.4408 (CF8M)(Code 37)

1.4435(Code 40)

Connection code 1 9 31 0 9 16 17 18 59 60

DN 6 - - - - X - - - - -DN 8 X X X X - - - - - XDN 10 X X X - - X X X X -DN 15 X X X - - - - - X -

Overview of metal bodies for GEMÜ 550 with actuator size 1, 2, 3, 4, 5

Materialcode

1.4408(Code 37)

1.4435(Code 34)

CF3M(316L)

(Code C1)Connection

code 1 8 9 10 17 37 59 60 0 16 17 18 37 59 60 82 86 88 31 3B

DN 10 X - - - - - - - - - - - - - X - - - - -DN 12 X - - - - - - - - - - - - - - - - - - -DN 15 X - X X* X - - X X X X X - X X X X X X XDN 20 X - X X* X - - X X X X X - X X X X X X XDN 25 X - X X* X - - X X X X X X X X X X X X XDN 32 X - X X* X - - X - X X X - - X X X - - -DN 40 X - X X* X - - X X X X X X X X X X X X XDN 50 X X* X - X - - X X X X X X X X X X X X XDN 65 X - X - X X X X - - - - - - - - - - - -DN 80 X - X - X X X X - - - - - - - - - - - -

21

GEMÜ 551 (Keg valve)2/2-way angle seat globe valve, pneumatically operated




Media temperature: -10°C to 180 °C (up to 300°C on request)





Actuator size CodeActuator 2 piston ø 60 mm 2


Connection CodeButt weld spigotsSpigots DIN 11850, series 2 17Spigots EN ISO 1127, KEG length K1Threaded connectionsThreaded sockets DIN ISO 228 1Threaded spigots DIN ISO 228 9

Valve body material Code1.4408 cast stainless steel 37

Special versions CodeSurfaces, electropolishedStandard glass bead blasted 1781

Special venting*Specially for the food industry 6996

* Option 6996 can only be supplied ex works.

Lip check valve (Code 6996) prevents penetration of dirty water


Flowunder the seat*

Flowover the seat


G M


22

GEMÜ 551 (Keg valve)2/2-way angle seat globe valve, pneumatically operated


Nominal size Kv value Operating pressure

[bar] Weight

DN [m3/h] Control function 1* [kg]Actuator 2G1

piston ø60 mm Actuator 2GA

piston ø60 mm Actuator 2

15 6.2 25 12 1.120 11.5 14 6 1.325 17.0 7.5 3 1.5

* Please note that the valve bodies of cast stainless steel are approved to PN 25.

DN25

DN15DN20

0,0

1,0

2,0

3,0

4,0

5,0

6,0


Steu

erdr

uck

[bar

]

DN25

DN15

DN20

0,0

1,0

2,0

3,0

4,0

5,0

6,0

7,0

8,0


Steu

erdr

uck

[bar

]

DN25

DN15

DN20

0,0

1,0

2,0

3,0

4,0

5,0

6,0

7,0

8,0


Steu

erdr

uck

[bar

]

Operating pressure / Control pressure characteristicsActuator size 1 2M1 / Control function 1 (NC) Actuator size 2 2G1 / Control function 2 (NO)


Actuator size 3 2G1 / Control function 3 (DA)Min. control pressure dependent on operating pressure

Con

trol p

ress

ure

in b

arC

ontro

l pre

ssur

e in

bar

Con

trol p

ress

ure

in b

ar





Actuator dimensions GEMÜ 551 [mm]Actuators ø B e H G

Code 2 63 M 16x1 19 G1/8

Actuator dimensions GEMÜ 551 [mm]DN ø B L L2 G2 SW115

63 22435 G½ 27

20 43 G¾ 2725 52 g1 34

Overview of metal bodies for GEMÜ 551Material code 1.4408 (Code 37)

Connection code 1 9 17 K1DN 15 X X X XDN 20 X X X XDN 25 X X X X

G2

L2

L

B

SW1

eH

G

B

45°

LA

H

45°

S W 1

Nominal size Wrench size Installation dimensions [mm] [mm] SW1 H/LA

15 27 17220 27 17225 34 174

Attention: Thread for assembly in the valve body is not interchangeable with series 550. (imperial sizes!)

24



Operator: Piston actuator, aluminium


Media temperature: -10°C to 180 °C (higher temperatureson request)




Connection CodeButt weld spigotsSpigots DIN 0Spigots DIN 11850, series 1 16Spigots DIN 11850, series 2 17Spigots DIN 11850, series 3 18Spigots SMS 3008 37Spigots ASME BPE 59Spigots EN ISO 1127 60Threaded connectionsThreaded sockets DIN ISO 228 1Threaded spigots DIN ISO 228 9Threaded sockets NPT 31

Valve body material CodeRg 5 cast bronze 91.4435 (ASTM A 351 CF3M) investment casting* 341.4408 investment casting 37



Control function CodeNormally closed (NC) 1Normally open (NO) 2*Double acting (DA) 3*

* not with piston ø 50 mm and ø 100 mm


Flowunder the seat*

Flowover the seat


G M Actuators3, 4

Actuators0, 1, 2, 5

Actuator size Flow CodeActuator 0 piston ø 50 mm under the seat* 0*Actuator 1 piston ø 70 mm under the seat* 1*Actuator 2 piston ø 120 mm under the seat* 2*Actuator 5 piston ø 100 mm under the seat* 5*Actuator 3 piston ø 50 mm over the seat 3Actuator 4 piston ø 70 mm over the seat 4



Nominal size

Kv value

Max. operating pressure [bar] control function 1* (NC) Control pressure control function 1 (NC)

DN [m3/h] Actua-tor 0

pistonø 50 mm

Actua-tor 3

pistonø 50 mm

Actua-tor 1

pistonø 70 mm

Actua-tor 4

pistonø 70 mm

Actuator 5piston

ø 100 mm

Actuator 2piston

ø 120 mm

Actuator0

Actuator3

Actuator1

Actuator4

Actuator5

Actuator2

15 5.4 12 10 25 10 - - 4.7 - 10min.

control pressure

see diagram.

max. control

pressure 10 bar

5.5 - 10min.

control pressure

see diagram.

max. control

pressure 10 bar

- -20 10.0 6 10 20 10 - 25 4.7 - 10 5.5 - 10 - 4.5 - 825 15.2 2.5 10 10 10 - 25 4.7 - 10 5.5 - 10 - 4.5 - 832 23.0 - - 7 10 12 20 - 5.5 - 10 4 - 8 4.5 - 840 41.0 - - 4.5 10 9 12 - 5.5 - 10 4 - 8 4.5 - 850 68.0 - - 3 10 7 10 - 5.5 - 10 4.2 - 8 5.5 - 865 95.0 - - - - - 7 - - - 5.5 - 880 130.0 - - - - - 5 - - - 5.5 - 8

* Please note that cast bronze valve bodies. when in pipe systems according to DIN are only suitable up to PN 16 max., cast stainless steel bodies up to PN 25. All pressures are gauge pressures. Min. control pressure for actuators 3 and 4 depends on operating pressure.

Operating pressure / Control pressure characteristicsActuator size 3 / Control function 1 (NC) Actuator size 4 / Control function 1 (NC)



Con

trol p

ress

ure

in b

arC

ontro

l pre

ssur

e in

bar

Con

trol p

ress

ure

in b

arC

ontro

l pre

ssur

e in

bar





26



Operating pressure / Control pressure characteristicsActuator size 2 / Control function 2 (NO) Actuator size 0 / Control function 3 (DA)


Actuator size 1 / Control function 3 (DA) Actuator size 2 / Control function 3 (DA)Min. control pressure dependent on operating pressure Min. control pressure dependent on operating pressure

Actuator dimensions GEMÜ 514 [mm]Actuator size ø B e F

0 + 3 71 M 16x1 -1 + 4 96 M 16x1 85.5

2 164 M 22x1.5 123.05 140 M 22x1.5 117.0

Con

trol p

ress

ure

in b

ar

Con

trol p

ress

ure

in b

arC

ontro

l pre

ssur

e in

bar

Con

trol p

ress

ure

in b

ar


Operating pressure in barOperating pressure in bar


Overview of metal bodies for GEMÜ 514Material code RG 5 (Code 9) 1.4435 (Code 34) 1.4408 (Code 37)

Connection code 1 9 31 0 16 17 18 37 59 60 1 9 17 37 59 60DN 15 X X X X X X X - X X X X X - - XDN 20 X X X X X X X - X X X X X - - XDN 25 X X X X X X X X X X X X X - - XDN 32 X - X - X X X - - X X X - - - XDN 40 X X X X X X X X X X X X - - - XDN 50 X X X X X X X X X X X X - - - XDN 65 X X X - - - - - - - X X X X X XDN 80 X X X - - - - - - - X X X X X X

* Connection only for actuators 1, 2 and 5,control function 2 (NO) and 3 (DA)

Wrench size SW1 Installation dimensions H/LA [mm]Actuator size 0 and 3 1 and 4 2 5Material code 9 34, 37 H/LA H/LA H/LA H/LA

DN15 36 36 151 162 - -20 41 41 161 172 239 -25 46 46 161 172 239 -32 55 55 - 180 247 23740 60 60 - 186 253 24350 75 75 - 194 261 25165 100 75 - - 273 -80 110 75 - - 290 -

28 Globe valves I GEMÜ S560 SilverLine®

GEMÜ S560 SilverLine®

2/2-way angle seat globe valve, pneumatically operated



Media temperature: up to 80°C (PP)


Operating pressure: 8 bar (DN 15-25), 6 bar (DN 50)

Connection CodeThreaded sockets DIN ISO 228 (brass) 1Union ends with DIN insert (PP)(socket)

7

Body with threaded spigots for unions (PP) (without union nut, insert and O-ring)

7X

Valve body material CodePP-R-GR, (reinforced polypropylene) 5*MS, brass 12

* only for connection code 7 and 7X

Seat seal CodeNBR 2

Control function CodeNormally closed (NC) 1

Union insert material CodePP 5Without insert X

Medium wetted parts (except seal materials) are always made of the same material as the valve bodies.

29Globe valves I GEMÜ S560 SilverLine®

Pressure / temperature correlation for plasticTemperature in °C (plastic body) 5 10 20 25 30 40 50 60

Valve body material Permissible operating pressure in barPP Code 5 10.0 10.0 10.0 10.0 8.5 7.0 5,5 4.0

Extended temperature ranges on request. Please note that the ambient temperature and medium temperature generate a combined temperature at the valve body which must not exceed the above values.

Nominal size Kv value Max. operating pressure

Control pressure

DN [m³/h] [bar] [bar]15 4.1 8

4,5 - 6,020 15,8 825 15,8 850 37,9 6

Kv values determined acc. to IEC 534 standard, valve body material PP with union ends with DIN insert.

CT

CT1

LALB

G

G1 d

L1L2

D

B

45°

Installation dimensions GEMÜ S560 plastic body Valve body material: PP (Code 5), connection code 7, 7X

DN CT CT1 B ød øD g1 G L1 L2 LA LB15 116.0 53.0 68.5 20.0 43.0 G 1 G¼ 90.0 124.0 116.5 22.520 133.0 55.0 86.5 25.0 60.0 G 1½ G¼ 120.0 158.0 133.5 32.025 133.0 55.0 86.5 32.0 60.0 G 1½ G¼ 120.0 162.0 133.5 32.050 211.5 90.0 135.6 63.0 103.0 G 2¾ G¼ 174.0 235.0 211.5 43.0

Overview of valve bodies for GEMÜ S560Connection code 1 7 7X

Material code 12 5 5DN 15 X X XDN 20 - X* -DN 25 X X XDN 50 X X X

* insert with reduction

LA

CT1

LB

CT

G

SW 2

B

t

G1

L1

45°

Installation dimensions GEMÜ S560 Valve body material: brass (Code 12), connection code 1

DN CT CT1 B L1 LA LB t g1 G SW215 114.0 51.0 68.5 65.0 114.0 17.0 15.0 G ½ G ¼ 27.025 132.7 55.0 86.5 90.0 133.5 24.0 19.1 G 1 G ¼ 41.050 211.5 90.0 135.6150.0211.5 40.0 25.7 G 2 G ¼ 70.0

30 Globe valves I GEMÜ 530

GEMÜ 5302/2-way globe valve, pneumatically operated







Actuator size CodeActuator 1 piston ø 42 mm 1Actuator 2 piston ø 60 mm 2Actuator 3 piston ø 80 mm 3Actuator 4 piston ø 100 mm 4Actuator 5 piston ø 130 mm 5


Connection CodeFlanges EN 1092 / PN16 / form Blength EN 558-1, series 1 ISO 5752, basic series 1

8

Flanges EN 1092 / PN25 / form Blength EN 558-1, series 1

10

Valve body material Code1.4408 cast stainless steel 37 Flow

under the seat*Flow

over the seat* Preferred fl ow direction with incompressible liquid media to avoid "water hammer“

G M


Spring set CodeStandard 1

Lip check valve (Code 6996)prevents penetration of dirty water and corrosive cleaning agents

Seat seal CodeFPM 4PTFE 5Steel 10EPDM 14

Special versions (selection) K-no.External actuator surface electropolishedVibration ground fi nish - as standard 1781

Special venting on the actuator forcorrosive environments 6996

All special versions only available ex worksVersions with metal bellows on request


Seat leakageLeakage class VI PTFE sealLeakage class IV Metal seal

Leakage class for control valves acc. to IEC 534_4/EN 1349

Nominal size Kv value

Max. operating pressure [bar]Normally closed (NC)Flow under the seat

Max. operating pressure [bar]Normally closed (NC)

Flow over the seat

DN [m³/h]

Actuator 1G

pistonø 42 mm

Actuator 2G

pistonø 60 mm

Actuator 3G

pistonø 80 mm

Actuator 4G

pistonø 100 mm

Actuator 5G

pistonø 130 mm

Actuator 1M

pistonø 42 mm

Actuator 2M

pistonø 60 mm

Actuator 3M

pistonø 80 mm

15 4.6 11 25 - - - 10 10 -20 8.0 6 15 25 - - 10 10 1025 13.0 - 8 16 25 - - 10 1032 22.0 - 5 10 18 25 - - 1040 35.0 - - 6 12 20 - - 1050 50.0 - - 3 7 15 - - 10

All pressures are gauge pressures.Kv values determined acc. to IEC 534 standard, valve body material 1.4408 stainless steel and fl anges EN 1092.The Kv value data refers to control function 1 (NC) and the largest actuator for each nominal size.Kv values may be diff erent for other combinations.

Nominal sizeControl pressure [bar]Normally closed (NC)Flow under the seat

Control pressure [bar]Normally closed (NC)

Flow over the seatDN Actuator 1G

pistonø 42 mm

Actuator 2Gpiston

ø 60 mm

Actuator 3Gpiston

ø 80 mm

Actuator 4Gpiston

ø 100 mm

Actuator 5Gpiston

ø 130 mm

Actuator 1Mpiston

ø 42 mm

Actuator 2Mpiston

ø 60 mm

Actuator 3Mpiston

ø 80 mm15 4 - 8 4 - 8 - - - 5 - 8 5 - 8 5 - 820 4 - 8 4 - 8 4 - 8 - - 5 - 8 5 - 8 5 - 825 - 4 - 8 4 - 8 4 - 8 - - 5 - 8 5 - 832 - 4 - 8 4 - 8 4 - 8 5 - 8 - - 5 - 840 - - 4 - 8 4 - 8 5 - 8 - - 5 - 850 - - 4 - 8 4 - 8 5 - 8 - - 5 - 8

Higher control pressures on request.

Sectional drawing



DN20

DN15

0,0

1,0

2,0

3,0

4,0

5,0

6,0


Steu

erdr

uck

[bar

]

DN25

DN15DN20

0,0

1,0

2,0

3,0

4,0

5,0

6,0


Steu

erdr

uck

[bar

]

DN25

DN15DN20

DN32

DN40

DN50

0,0

1,0

2,0

3,0

4,0

5,0

6,0


Steu

erdr

uck

[bar

]

Actuator size 3Min. control pressure dependent on operating pressure

Operating pressure / Control pressure characteristicsFlow direction: fl ow over the seat / control function: Normally closed (NC)

Actuator size 1 Actuator size 2Min. control pressure dependent on operating pressure Min. control pressure dependent on operating pressure

Con

trol p

ress

ure

in b

ar

Con

trol p

ress

ure

in b

ar


Con

trol p

ress

ure

in b

ar



0,0

1,0

2,0

3,0

4,0

5,0

6,0

Betriebsdruck [bar]

Steu

erdr

uck

[bar

]

0 5 1510 20 25

8,0

7,0

DN20

DN15

0,0

1,0

2,0

3,0

4,0

5,0

6,0

7,0

8,0

Steu

erdr

uck

[bar

]

Betriebsdruck [bar]

DN15

DN20

DN25

DN32

250 5 10 15 20

DN20

DN25

DN32

0,0

1,0

2,0

3,0

4,0

5,0

6,0

7,0

8,0

0 5 10 15 20 25

Betriebsdruck [bar]

Steu

erdr

uck

[bar

]

DN40DN50

DN15

DN32

DN40

DN50

0,0

1,0

2,0

3,0

4,0

5,0

6,0

7,0

8,0

0 5 10 15 20 25

Betriebsdruck [bar]

Steu

erdr

uck

[bar

]


Operating pressure / Control pressure characteristicsFlow direction: fl ow under the seat / control function: Normally open (NO)


DN50

DN40

0,0

1,0

2,0

3,0

4,0

5,0

6,0

7,0

8,0

0 5 10 15 20 25

Betriebsdruck [bar]

Steu

erdr

uck

[bar

]

DN32


Con

trol p

ress

ure

in b

ar

Con

trol p

ress

ure

in b

ar


Con

trol p

ress

ure

in b

ar

Con

trol p

ress

ure

in b

ar


Con

trol p

ress

ure

in b

ar




0,0

1,0

2,0

3,0

4,0

5,0

6,0

Betriebsdruck [bar]

Steu

erdr

uck

[bar

]

0 5 1510 20 25

8,0

7,0 DN20

DN15

0,0

1,0

2,0

3,0

4,0

5,0

6,0

7,0

8,0

Steu

erdr

uck

[bar

]

Betriebsdruck [bar]

DN15

DN20

DN25

DN32

250 5 10 15 20

DN25

DN20

DN32

DN40

0,0

1,0

2,0

3,0

4,0

5,0

6,0

7,0

8,0

0 5 10 15 20 25

Betriebsdruck [bar]

Steu

erdr

uck

[bar

]

DN50

DN40

DN15

DN32

DN50

0,0

1,0

2,0

3,0

4,0

5,0

6,0

7,0

8,0

0 5 10 15 20 25

Betriebsdruck [bar]

Steu

erdr

uck

[bar

]


Operating pressure / Control pressure characteristicsFlow direction: fl ow under the seat / control function: double acting (DA)


DN50

DN40

0,0

1,0

2,0

3,0

4,0

5,0

6,0

7,0

8,0

0 5 10 15 20 25

Betriebsdruck [bar]

Steu

erdr

uck

[bar

]

DN32


Con

trol p

ress

ure

in b

ar


Con

trol p

ress

ure

in b

ar


Con

trol p

ress

ure

in b

ar


Con

trol p

ress

ure

in b

ar


Con

trol p

ress

ure

in b

ar



CT

G

A4

M

G

SW1

B

Installation dimensions [mm] / Valve weight [kg]Actuator size 1

ø42 mmActuator size 2


ø 80 mmActuator size 4


ø130 mm

DN SW1 metric CT Weight

[kg] CT Weight[kg] CT Weight

[kg] CT Weight[kg] CT Weight

[kg]15 36 165 2.9 212 3.2 - - - - - -20 41 172 3.8 219 4.0 - - - - - -25 46 - - 230 4.8 249 5.5 - - - -32 55 - - 235 6.6 254 7.3 288 8.7 315 11.840 60 - - - - 265 8.4 299 9.8 325 12.950 75 - - - - 273 10.7 307 12.1 333 15.2

Actuator dimensions GEMÜ 530Actuator size øB M A4 G

1 46 M16x1 12 G⅛2 63 M16x1 22 G⅛3 84 M16x1 28 G¼4 104 M22x1.5 32 G¼5 135 M22x1.5 41 G¼

Overview of metal bodies for GEMÜ 530Material code 1.4408, cast stainless steel (Code 37)

Connection code 8 10DN 15 - XDN 20 - XDN 25 - XDN 32 - XDN 40 - XDN 50 X -









Actuator size CodeActuator 0 piston ø 50 mm 0Actuator 1 piston ø 70 mm 1Actuator 2 piston ø 120 mm 2Actuator 3 piston ø 50 mm 3Actuator 4 piston ø 70 mm 4

Connection CodeFlanges EN 1092 / PN16 / form Blength EN 558-1, series 1 ISO 5752, basic series 1

8

Flanges EN 1092 / PN25 / form Blength EN 558-1, series 1

10

Valve body material Code1.4408 cast stainless steel 37EN-GJS-400 18-LT, SG iron 40.3 90

Seat seal CodeFPM 4PTFE 5EPDM 14

Other seat seals such as NBR, etc. available on request

Flowunder the seat*

Flowover the seat



GEMÜ 534actuators 0, 1, 2

GEMÜ 534actuators 3, 4


Sectional drawing

Operating pressure / Control pressure characteristicsActuator size 0 / Control function 2 (NO)

Flow direction: fl ow under the seatActuator size 0 / Control function 3 (DA)

Flow direction: fl ow under the seatMin. control pressure dependent on operating pressure Min. control pressure dependent on operating pressure

Nominalsize Kv value Max. operating pressure [bar]

Normally closed (NC)Control pressure [bar]Normally closed (NC)

DN [m³/h]Actuator 0

pistonø 50 mm

Actuator 3piston

ø 50 mm

Actuator 1piston

ø 70 mm

Actuator 4piston

ø 70 mm

Actuator 2 Actuator 0fl ow under

the seat

Actuator 3fl ow overthe seat

Actuator 1fl ow under

the seat

Actuator 4fl ow over the seat

Actuator 2 fl ow under

the seat15 4.6 12.0 10 25.0 10 - 4.8 - 7.0

min

. con

trol p

ress

ure

see

diag

ram

max

. co

ntro

l pre

ssur

e 7

bar

5.5 - 7.0m

in. c

ontro

l pre

ssur

e se

e di

agra

m m

ax.

cont

rol p

ress

ure

7 ba

r

-20 8.0 6.0 10 20.0 10 25 4.8 - 7.0 5.5 - 7.0 4.0 - 7.025 13.0 2.5 10 10.0 10 25 4.8 - 7.0 5.5 - 7.0 4.0 - 7.032 22.0 - - 7.0 10 20 - 5.5 - 7.0 4.0 - 7.040 35.0 - - 4.5 10 12 - 5.5 - 7.0 4.0 - 7.050 50.0 - - 3.0 10 10 - 5.5 - 7.0 5.0 - 7.0

All pressures are gauge pressures. The maximum operating pressure for valve body material SG iron 40.3 is 16 bar.Kv values determined acc. to IEC 534 standard, valve body material 1.4408 stainless steel and fl anges EN 1092.The Kv value data refers to control function 1 (NC) and the largest actuator for each nominal size.Kv values may be diff erent for other combinations.

Con

trol p

ress

ure

in b

ar

Con

trol p

ress

ure

in b

ar




Actuator size 2 / Control function 2 (NO)Flow direction: fl ow under the seat

Actuator size 2 / Control function 3 (DA)Flow direction: fl ow under the seat


Operating pressure / Control pressure characteristicsActuator size 2 / Control function 2 (NO)

Flow direction: fl ow under the seatActuator size 1 / Control function 3 (DA)

Flow direction: fl ow under the seatMin. control pressure dependent on operating pressure Min. control pressure dependent on operating pressure

Actuator size 3 / Control function 1 (NC)Flow direction: fl ow over the seat

Actuator size 4 / Control function 1 (NC)Flow direction: fl ow over the seat


Con

trol p

ress

ure

in b

ar


Con

trol p

ress

ure

in b

ar


Con

trol p

ress

ure

in b

ar


Con

trol p

ress

ure

in b

ar


Con

trol p

ress

ure

in b

ar


Con

trol p

ress

ure

in b

ar



GG

M

A2

SW 1

CT

B

Actuator dimensions GEMÜ 534 [mm]Actuator size øB M A2 G

0 + 3 72 M16x1 70 G1/41 + 4 96 M16x1 86 G1/4

2 168 M22x1.5 149 G1/4

Pressure / temperature correlation for globe valve bodies

Connectioncode

Materialcode

Max. allowable pressure (barg) at temperature in °C *

RT 50 100 150 2008 90 16.0 16.0 16.0 15.2 14.78 37 14.6 13.9 12.4 11.2 10.3

10 37 22.8 21.7 19.4 17.6 16.1* The valves can be used down to -10°C RT= Room Temperature

Installation dimensions [mm] / Valve weight [kg]Actuator 0 + 3 Actuator 1 + 4 Actuator 2

DN SW1 metric

CT[mm]

Weight[kg]

CT[mm]

Weight[kg]

CT[mm]

Weight[kg]

15 36 190 3.1 218 3.6 - 7.820 41 197 4.1 225 4.6 320 8.625 46 208 5.0 236 5.5 331 9.332 55 - - 241 7.7 336 10.940 60 - - 252 9.0 347 11.950 75 - - 260 11.8 355 14.0

Overview of metal bodies for GEMÜ 534

Material codeSG iron

40.3(Code 90)

1.4408, cast stainless steel

(Code 37) Connection code 8 8 10

DN 15 X - XDN 20 X - XDN 25 X - XDN 32 X - XDN 40 X - XDN 50 X X -









Connection CodeFlanges EN 1092 / PN 16 / form Blength EN 558-1, series 1 ISO 5752, basic series 1

8

Flanges EN 1092 / PN 40 / form Blength EN 558-1, series 1 ISO 5752, basic series 1

11

Flanges ANSI class 125/150 RF, length EN 558-2, series 1 ISO 5752, basic series 1

39

Flanges ANSI B 16.5, class 300, length EN 558-2, series 1 ISO 5752, basic series 1

40

Valve body material CodeEN-GJL-250, GG 25 (cast iron) 8GP 240 H, GS-C (cast steel) 111.4408 cast stainless steel 371.4581 investment casting 38

Actuator size Flow CodeActuator 1 piston ø 70 mm under the seat* 1Actuator 2 piston ø 120 mm under the seat* 2Actuator 4 piston ø 70 mm over the seat 4

* Preferred flow direction with incompressible liquid media to avoid "water hammer“


Seat seal CodePTFE 5Steel 10

Flow direction

Flowunder the seat*

Flowover the seat

GEMÜ 512 actuator 4

GEMÜ 512actuators1 and 2



Nominal size Kv value Operating pressure [bar] Control pressure [bar] Weight

DN [m3/h]Control function 1 (NC)* Control function 1 (NC) [kg]

Actuator size 1piston ø70 mm






Actuator size 1+4piston ø70 mm


15 3.6 16.0 10 40.0 5.5 - 10

Control pressures

see diagram

4.0 - 8 3.6 7.520 6.0 16.0 10 40.0 5.5 - 10 4.0 - 8 4.6 8.525 9.6 10.0 10 40.0 5.5 - 10 4.0 - 8 5.2 9.132 15.0 7.0 10 32.0 5.5 - 10 4.0 - 8** 7.5 11.440 23.0 4.5 10 19.0 5.5 - 10 4.0 - 8** 8.3 12.250 36.0 3.0 10 10.0 5.5 - 10 5.5 - 8 11.3 15.265 60.5 - - 7.0 - 5.5 - 8 - 22.480 89.0 - - 5.0 - 5.5 - 8 - 26.0

100 135.0 - - 2.5 - 5.5 - 8 - 34.5Operating pressure for seal material PTFE (Code 5); for seal material steel (Code 10) only 60% of the values indicated above.* Please observe pressure / temperature correlation (see table below)**For material code 11 and 38: Control pressure 5.5 - 8 bar

Operating pressure / Control pressure characteristicsActuator size 4 / Control function 1 (NC)

Min. control pressure dependent on operating pressure


Con

trol p

ress

ure

in b

ar


Con

trol p

ress

ure

in b

ar


Con

trol p

ress

ure

in b

ar




Operating pressure / Control pressure characteristicsActuator size 1 / Control function 3 (DA) Actuator size 2 / Control function 3 (DA)


Actuator dimensions GEMÜ 512 [mm]Actuator size ø B M A2 G

1 + 4 96 M 16 x 1 85.5 ¼2 164 M 22 x 1.5 123.0 ¼

Con

trol p

ress

ure

in b

ar


Con

trol p

ress

ure

in b

ar



Installation dimensions GEMÜ 512 [mm]

DNValve body material code Actuator size 1 and 4 Actuator size 2

8 11, 38 37 8 11, 38 8 11, 37*, 38*SW 1 CT CT1 CT CT1 CT CT1 CT CT1

15 36 41 - 218 119 220 121 - - 293 15020 46 41 - 227 128 220 121 - - 293 15025 46 41 - 233 134 220 121 - - 293 15032 60 60 - 241 142 247 148 314 171 320 17740 60 60 - 246 147 247 148 319 176 320 17750 75 75 - 256 157 260 161 329 186 333 19065 75 60 60 - - - - 339 196 368 22580 75 75 60 - - - - 360 217 391 248

100 75 - 75 - - - - 381 238 - -* For nominal sizes available for each valve body see overview

Overview of metal globe valve bodies for GEMÜ 512Connection

code 8 11 39 40

Materialcode 8 37 11 38 8 11 37 38 11 38

DN 15 X - X X X X - X X XDN 20 X - X X X X - X X XDN 25 X - X X X X - X X XDN 32 X - X X X X - X X XDN 40 X - X X X X - X X XDN 50 X - X X X X - X X XDN 65 X X X - X X* X* - - -DN 80 X X X - X X* X* - - -

DN 100 X - - - X - - - - -* DIN fl ange drilled to ANSI Class 150



Operator: Membrane actuator, metal


Media temperature: -10°C to 180 °C (higher temperatures on request)






8


11


39

Valve body material CodeEN-GJL-250, GG 25 (cast iron) 8GP 240 H, GS-C (cast steel) 111.4408 cast stainless steel 37




Nominal size

Kvvalue

Control function 1 (NC) Control function 2 (NO) Control function 3 (DA)

Operating pressure

Control press.at

max. strokeActuator

sizeWeight Operating

pressureControl

pressureActuator

sizeWeight Operating

pressureControl

pressureActuator

sizeWeight

DN [m3/h] [bar] [bar] Code [kg] [bar] [bar] Code [kg] [bar] [bar] Code [kg]

65 756.0

10.016.0

3.0-74.5-75.5-7

3/13/23/3

373940

16 max. 7 5 43 16 max. 7 7 75

80 113

3.06.09.0

16.0

3.0-74.5-75.5-75.5-7

3/13/23/34/3

40424376

16 max. 7 5 46 16 max. 7 7 113

100 1754.06.0

10.5

4.5-75.5-75.5-7

3/23/34/3

535487

16 max. 7 5 57 16 max. 7 7 175

125 275 3.58.0

5.5-75.5-7

3/34/3

6699

1016 max. 7 5

66989

1016 max. 7 7

8 275

150 400 4.5 5.5-7 4/3 118 616 max. 7 5

688

1086

16 max. 7 78 400

All pressures are given as gauge pressures when applied upstream only. Higher pressures and temperatures on request.Kv values determined acc. to IEC 534 standard, valve body material cast iron EN-GJL-250 with connection fl ange EN 1092.The Kv value data refers to control function 1 (NC) and the largest actuator for each nominal size.Kv values may be diff erent for other combinations.

Operating pressure / Control pressure characteristicsActuator size 5 / Control function 2 (NO) Actuator size 6 / Control function 2 (NO)


Overview of valve bodies for GEMÜ 520Connection code 8 11 39

Material code 8 37 11 8 11 37DN 65 X X X X X* X*DN 80 X X X X X* X*

DN 100 X X X X X* X*DN 125 X - X X X* -DN 150 X - X X X* -

* DIN fl ange drilled to ANSI Class 150

Con

trol p

ress

ure

in b

ar

Con

trol p

ress

ure

in b

ar


Max. perm. control pressure Max. perm. control pressure



Dimensions - Actuator code 3/1 - 3/3 / C.f. 1 (NC) [mm] Dimensions - Actuator code 4/3 / C.f. 1 (NC) [mm]

Dimensions - Actuator code 5 and 7 / C.f. 2 (NO) and 3 (DA) [mm] Dimensions - Actuator code 6 and 8 / C.f. 2 (NO) and 3 (DA) [mm]









Connection CodeFlanges PN 16, DIN 2501, form Clength EN 558-1, series 1 8

Flanges ANSI B 16.5, class 150 RFlength EN 558-1, series 1 39

Valve body material CodeCast iron, EN-GJL-250 8


Actuator size CodeActuator 1 piston ø 70 mm 1Actuator 2 piston ø 120 mm 2


Other control functions on request


[bar]Control pressure

[bar]* Weight [kg]

DN[m3/h] Actuator 1 Actuator 2 Actuator 1 Actuator 2 Actuator 1 Actuator 2

P→A A→R P→A P→A The valve is closed fromA to R

15 6.0 4.2 16.0 - 5.5 - 7.0 - 4.4 -20 12.0 7.1 16.0 - 5.5 - 7.0 - 5.8 -25 18.5 12.7 10.0 - 5.5 - 7.0 - 6.7 -32 26.0 15.0 6.0 16.0 5.5 - 7.0 4.5 - 7.0 10.4 13.340 40.0 27.0 4.5 14.0 5.5 - 7.0 4.5 - 7.0 11.5 14.550 60.0 43.0 2.5 10.0 5.5 - 7.0 5.5 - 7.0 15.3 18.465 104.0 68.0 - 7.0 - 5.5 - 7.0 - 25.580 145.0 96.0 - 4.0 - 5.5 - 7.0 - 32.0

100 220.0 144.0 - 2.0 - 5.5 - 7.0 - 44.0*Operating pressure at connection R may not be greater than operating pressure P → A. Kv values determined acc. to IEC 534 standard, valve body material cast iron EN-GJL-250 with connection fl ange EN 1092, valve body material cast bronze with threaded socket connection DIN ISO 228. The Kv value data refers to control function 1 (NC) and the largest actuator for each nominal size.Kv values may be diff erent for other combinations.




1 96 M16 x 1 85.5 G ¼2 164 M22 x 1.5 123.0 G ¼

Flow direction

M

G*

G

LC

K

SW 1

R

n(Number of bolt holes)

PA

D

H2

L

B

A2

CT1

CT

d1

* Connection only for control functions 2 and 3

Dimensions GEMÜ 312, connection code 8 [mm], valve body material code 8Actuator 1 Actuator 2

DN L ø D ø K ø L Number of bolt holes SW1 ød1 C H2 CT CT1 CT CT1

15 130 95 65 14 4 41 45 14 97 193 95 - -20 150 105 75 14 4 41 58 16 112 198 100 - -25 160 115 85 14 4 41 68 16 118 199 101 - -32 180 140 100 18 4 41 78 18 142 210 112 285 14140 200 150 110 18 4 41 88 18 148 218 120 293 14950 230 165 125 18 4 41 102 20 158 225 127 300 15665 290 185 145 18 4 55 122 20 183 - - 314 17080 310 200 160 18 8 55 138 22 204 - - 326 182

100 350 220 180 18 8 55 158 24 236 - - 339 195

RA

P

A


Overview of metal bodies for GEMÜ 312Material code EN-GJL-250 (8)

Connection code 8 39DN 15 X XDN 20 X XDN 25 X XDN 32 X XDN 40 X XDN 50 X XDN 65 X XDN 80 X X

DN 100 X X



15 130 88.9 60.5 15.75 4 41 35,1 11.2 97 193 95 - -20 150 98.6 69.9 15.75 4 41 42,9 12.7 112 198 100 - -25 160 108.0 79.2 15.75 4 41 50,8 14.2 118 199 101 - -32 180 117.3 88.9 15.75 4 41 63.5 15.7 142 210 112 285 14140 200 127.0 98.6 15.75 4 41 73,2 17.5 148 218 120 293 14950 230 152.4 120.7 19.05 4 41 91,9 19.1 158 225 127 300 15665 290 177.8 139.7 19.05 4 55 104,6 22.4 183 - - 314 17080 310 190.5 152.4 19.05 4 55 127.0 23.9 204 - - 326 182

100 350 228.6 190.5 19.05 8 55 157,2 23.9 236 - - 339 195










Connection CodeFlanges PN 16, DIN 2501, form Clength EN 558-1, series 1 8

Flanges ANSI B 16.5, class 150 RFlength EN 558-1, series 1 39

Valve body material CodeCast iron, EN-GJL-250 8





Nominal size Kv value Operating pressure [bar] Control pressure [bar]*

DN[m3/h] Actuator 1 Actuator 2 Actuator 1 Actuator 2


15 6.0 4.2 16.0 - 5.5 - 7.0 -20 12.0 7.1 16.0 - 5.5 - 7.0 -25 18.5 12.7 10.0 - 5.5 - 7.0 -32 26.0 15.0 6.0 16.0 5.5 - 7.0 4.0 - 7.040 40.0 27.0 4.5 14.0 5.5 - 7.0 4.0 - 7.050 60.0 43.0 2.5 10.0 5.5 - 7.0 5.0 - 7.065 104.0 68.0 - 7.0 - 5.0 - 7.080 145.0 96.0 - 4.0 - 5.0 - 7.0

100 220.0 144.0 - 2.0 - 5.0 - 7.0*Operating pressure at connection R may not be greater than operating pressure P → A. Kv values determined acc. to IEC 534 standard, valve body material cast iron EN-GJL-250 with connection fl ange EN 1092, valve body material cast bronze with threaded socket connection DIN ISO 228. The Kv value data refers to control function 1 (NC) and the largest actuator for each nominal size.Kv values may be diff erent for other combinations.



1 96 M16 x 1 86 G ¼2 168 M22 x 1.5 123,0 G ¼

Flow direction

L

A2

M

CT1

G*

G

K

(Number of bolt holes)

A

SW 1

n

R

P

B

D

CT

d1

L

C

H2

*Connection only for control functions 2 and 3



15 130 95 65 14 4 41 45 14 97 210 104 - -20 150 105 75 14 4 41 58 16 112 215 109 - -25 160 115 85 14 4 41 68 16 118 216 110 - -32 180 140 100 18 4 41 78 18 142 226 120 321 14540 200 150 110 18 4 41 88 18 148 235 129 330 15450 230 165 125 18 4 41 102 20 158 242 136 337 16165 290 185 145 18 4 55 122 20 183 - - 349 17380 310 200 160 18 8 55 138 22 204 - - 361 185

100 350 220 180 18 8 55 158 24 236 - - 375 199

RA

P

A



Overview of metal bodies for GEMÜ 352Material code EN-GJL-250 (8)

Connection code 8 39DN 15 X XDN 20 X XDN 25 X XDN 32 X XDN 40 X XDN 50 X XDN 65 X XDN 80 X X

DN 100 X X



15 130 88.9 60.5 15.75 4 41 35.1 11.2 97 210 104 - -20 150 98.6 69.9 15.75 4 41 42.9 12.7 112 215 109 - -25 160 108.0 79.2 15.75 4 41 50.8 14.2 118 216 110 - -32 180 117.3 88.9 15.75 4 41 63.5 15.7 142 226 120 321 14540 200 127.0 98.6 15.75 4 41 73.2 17.5 148 235 129 330 15450 230 152.4 120.7 19.05 4 41 91.9 19.1 158 242 136 337 16165 290 177.8 139.7 19.05 4 55 104.6 22.4 183 - - 349 17380 310 190.5 152.4 19.05 4 55 127.0 23.9 204 - - 361 185

100 350 228.6 190.5 19.05 8 55 157.2 23.9 236 - - 375 199









Connection CodeThreaded sockets DIN ISO 228 1

Valve body material CodeCast bronze RG 9






[bar]Control pressure

[bar]* Weight [kg]

DN[m3/h] Actuator 1 Actuator 2 Actuator 1 Actuator 2 Actua-

tor 1Actua-tor 2


15 3.6 2.5 16.0 - 5.5 - 7.0 - 1.7 -20 5.5 3.3 16.0 - 5.5 - 7.0 - 1.8 -25 10.6 7.3 10.0 - 5.5 - 7.0 - 2.1 -32 18.0 10.4 6.0 16.0 5.5 - 7.0 4.5 - 7.0 3.2 6.140 31.0 20.9 4.5 14.0 5.5 - 7.0 4.5 - 7.0 3.7 6.750 47.0 33.7 2.5 10.0 5.5 - 7.0 5.5 - 7.0 4.7 7.9

*Operating pressure at connection R may not be greater than operating pressure P → A. Kv values determined acc. to IEC 534 standard, valve body material cast iron EN-GJL-250 with connection fl ange EN 1092, valve body material cast bronze with threaded socket connection DIN ISO 228. The Kv value data refers to control function 1 (NC) and the largest actuator for each nominal size.Kv values may be diff erent for other combinations.



Overview of metal bodies for GEMÜ 314Material code RG cast bronze (9)

Connection code 1DN 15 XDN 20 XDN 25 XDN 32 XDN 40 XDN 50 X


1 96 M16 x 1 85.5 G ¼2 164 M22 x 1.5 123.0 G ¼

G1

CT1

A2

G*

GG

1

M

G1

R

SW 2

SW 1

A

P

B

L

CT

H2



DN G 1 L SW1 SW2 H2 CT1 CT CT CT115 G ½ 75 36 27 41 186 88 - -20 G ¾ 87 36 32 46 190 92 - -25 G 1 107 41 41 47 190 92 - -32 G 1 ¼ 123 55 50 66 194 96 269 12540 G 1 ½ 147 55 58 68 194 96 269 12550 G 2 171 55 70 74 198 100 273 129










Connection CodeThreaded sockets DIN ISO 228 1

Valve body material CodeCast bronze RG 9





Nominal size Kv value Operating pressure [bar] Control pressure [bar]*

DN[m3/h] Actuator 1 Actuator 2 Actuator 1 Actuator 2


15 3.6 2.5 16.0 - 5.5 - 7.0 -20 5.5 3.3 16.0 - 5.5 - 7.0 -25 10.6 7.3 10.0 - 5.5 - 7.0 -32 18.0 10.4 6.0 16.0 5.5 - 7.0 4.5 - 7.040 31.0 20.9 4.5 14.0 5.5 - 7.0 4.5 - 7.050 47.0 33.7 2.5 10.0 5.5 - 7.0 5.5 - 7.0

*Operating pressure at connection R may not be greater than operating pressure P → A. Kv values determined acc. to IEC 534 standard, valve body material cast iron EN-GJL-250 with connection fl ange EN 1092, valve body material cast bronze with threaded socket connection DIN ISO 228. The Kv value data refers to control function 1 (NC) and the largest actuator for each nominal size.Kv values may be diff erent for other combinations.



Overview of metal bodies for GEMÜ 354Material code RG cast bronze (9)

Connection code 1DN 15 XDN 20 XDN 25 XDN 32 XDN 40 XDN 50 X


1 96 M16 x 1 86 G ¼2 164 M22 x 1.5 149 G ¼

G1

CT1

A2

G*

GG

1

M

G1

R

SW 2

SW 1

A

P

B

L

CT

H2



DN G 1 L SW1 SW2 H2 CT1 CT CT CT115 G ½ 75 36 27 41 203 97 - -20 G ¾ 87 36 32 46 207 101 - -25 G 1 107 41 41 47 207 101 - -32 G 1 ¼ 123 55 50 66 211 105 306 13040 G 1 ½ 147 55 58 68 211 105 306 13050 G 2 171 55 70 74 215 109 310 134

57Globe valves I GEMÜ 558 SideStep®

GEMÜ 558 SideStep®

2/2-way control valve, motorized

Operator: Electric motor, integrated optical position indicator



Ambient temperature: 0°C to 60°C (with heating down to -10°C)

Option: Control version with regulating coneintegrated positioner and/or process controller,emergency power supply module, Profi bus DP

Supply voltage/mains frequency Code24 V DC C1120 V 50/60 Hz G4230 V 50/60 Hz L4

Main function CodeOPEN / CLOSE control (economy)* AOPEN / CLOSE control (industrial) COPEN / CLOSE control (industrial) + emergency power supply module D

Positioner SPositioner + emergency power supply module tPositioner and process controller PPositioner and process controller + emergency power supply module R

* With version "Main function A (economy)" only option Code 0 or Code 3 are possible.

Option CodeWithout 0Digital inputs 1Profi bus DP 2AS-Interface* 3DeviceNet 4

* Only possible with main function A (economy)


8


11


39

Flanges ANSI B 16.5, class 300, length EN 558-2, series 1 ISO 5752, basic series 1

40

Valve body material CodeEN-GJL-250, GG 25 (cast iron) 8GP 240 H, GS-C (cast steel) 111.4408 cast stainless steel 371.4581 investment casting 38


Actuator version CodeSize 2, axial force 4.5 kN 2D

Other sizes on request

R-Number CodeVersion with regulating cone on request -

58 Globe valves I GEMÜ 558 SideStep®

GEMÜ 558 SideStep®

2/2-way control valve, motorized

CT

159

9,8

137,

5

36

145 x 256

SW

Nominal size

Kv value Max. operating pressure*

[m3/h] [bar][mm] Actuator version 2D Actuator version 2D

25 9.6 2532 15.0 2540 23.0 2550 36.0 2065 60.5 980 89.0 5

Larger actuators are available for higher operating pressures.

* Please note that cast bronze valve bodies, when in pipe systems according to DIN are only suitable up to PN 16 max., cast stainless steel bodies up to PN 25. All pressures are gauge pressures. Sealing at the valve seat and atmospheric sealing is ensured for the given values.


Valve body material code 8 11, 38 37 8 11, 37, 38

Weight (actuator only)(the valve body weight

must be added)DN Wrench size SW 1 CT CT [kg]25 46 41 - 348 334 6.932 60 60 - 350 355 7.240 60 60 - 355 355 7.550 75 75 - 370 373 7.965 75 60 60 373 396 9.480 75 75 60 397 434 10.6

GEMÜ off ers fastening facilities for the actuator on request

59Globe valves I GEMÜ 558 SideStep®

Overview of metal globe valve bodies for GEMÜ 558Connection code 8 11 39 40

Material code 8 37 11 38 8 11 37 38 11 38DN 15 X - X X X X - X X XDN 20 X - X X X X - X X XDN 25 X - X X X X - X X XDN 32 X - X X X X - X X XDN 40 X - X X X X - X X XDN 50 X - X X X X - X X XDN 65 X X X - X X* X* - - -DN 80 X X X - X X* X* - - -

* Hole pattern drilled to ANSI class 150

DN 100 on request.

60 Globe valves I GEMÜ 563/568

GEMÜ 563/5682/2-way control valve, motorized

Operator: Electric motor, integrated optical position indicator

Nominal sizes: DN 3 - DN 15

Media temperature: -10°C to 80°C (dependent on valve body material and operating pressure)

Ambient temperature: -15°C to 55°C

Option: Integrated control module,integrated LON fi eld bus connection

Connection CodeThreaded connectionsThreaded sockets DIN ISO 228 (GEMÜ 563/568) 1Threaded spigots (dairy unions according to DIN 11851) (GEMÜ 568) 6Clamp connectionsClamps DIN 32676 for pipe DIN 11850 (GEMÜ 568)

86

Control module (with connector) CodeWithout -Analogue signal processingAnalogue signal processing Control of valve position.Actual value control inside the actuator by potentiometer (K 6025/K 6026); set value external, 0 - 10V

E1

Control of valve position.Actual value control inside the actuator by potentiometer (K 6025/K 6026); set value external, 0/4-20 mA

E2

Control of process variables.Actual value external, 0/4-20 mA; set value external, 0/4-20 mA (K 6023/K 6024)

E3

Control of valve position.Actual value control inside the actuator by potentiometer (K 6025/K 6026); set value external, external potentiometer

EP

Valve body material CodePVC-U, grey (GEMÜ 563) 1PVDF polyvinylidenefl uoride (GEMÜ 563) 201.4435 (ASTM A 351 CF3M) investment casting* (GEMÜ 568) 34


Voltage/Frequency Code 24 V 50/60 Hz ±10% C4120 V 50/60 Hz ±10% G4230 V 50/60 Hz ±10% L4

Control characteristic CodeKv values / control characteristic / equal-percentage / equal-percentage / equal-percentage / linear / linear

A*B*C*D*E*

* For selection see diagrams

Seat seal CodePTFE 4EPDM 14

Design CodeStandard: approx. 17 sec. operating time,2 potential-free switching contacts

6023

Operating time approx. 45 sec., 2 potential-free switching contacts

6024

Operating time approx. 17 sec., with potentiometer 10 kΩ

6025

Operating time approx. 45 sec., with potentiometer 10 kΩ

6026

61Globe valves I GEMÜ 563/568

Nominal size(seat)

Operating pressure Weight

[mm] [bar] [kg]GEMÜ 563 GEMÜ 568

3 0 - 6 1.6 2.46 0 - 6 1.6 2.4

10 0 - 6 1.6 2.415 0 - 6 1.6 2.4

All pressures are gauge pressures.

Kv value characteristics DN 3 (seat)

Characteristic Kv value [l/h]A 63B 100C 160D 100


Characteristic Kv value [l/h]A 2500B 3300D 3300


Characteristic Kv value [l/h]A 250B 400C 630D 250E 630


Characteristic Kv value [l/h]A 1000B 1600D 1600

Kv va

lue

(l/h)

Stroke (mm)

Kv va

lue

(l/h)

Stroke (mm)

Kv va

lue

(l/h)

Kv va

lue

(l/h)

Stroke (mm) Stroke (mm)

62 Globe valves I GEMÜ 563/568

GEMÜ 563/5682/2-way control valve, motorized

Actuator dimensions GEMÜ 568 and 563 [mm] Body dimensions - dairy pipe unions [mm]Connection code 6 acc. to DIN 11851 (only GEMÜ 568)

Valve body material code 34

Body dimensions - threaded sockets[mm]Connection code 1 (GEMÜ 563 / GEMÜ 568)

Valve body material code 1, 20, 34DN (seat) G

3 G ⅜6 G ⅜

10 G ⅜15 G ½

Body dimensions - clamp connections[mm]Connection code 86 (only GEMÜ 568)

Valve body material code 34ø d3

34

63Globe valves I GEMÜ 563/568

Overview of valve bodies for GEMÜ 563Material code PVC-U (1), PVDF (20)

Connection code 1DN 3 XDN 6 X

DN 10 XDN 15 X

Overview of valve bodies for GEMÜ 568Material code 1.4435 (34)

Connection code 1 6 86DN 3 X X XDN 6 X X X

DN 10 X X XDN 15 X X X

Temperature-pressure diagrams can be helpful to determine the relationship between both high temperatures and pressures, and how these process parameters aff ect the use of the valve.

Pressure/temperature diagram for valves - pressure rating PN 6

Pressure/temperature diagram for valves - pressure rating PN 10

Ope

ratin

g pr

essu

re [b

ar]

Ope

ratin

g pr

essu

re [b

ar]

Temperature °C

Temperature °C


GEMÜ 5072/2-way angle seat globe valve, manually operated

Operator: Handwheel, plastic





Valve body material Code1.4435 (ASTM A 351 CF3M) investment casting* 341.4408 investment casting 371.4435 (316 L) forged body 40ASTM A 351 CF3M investment casting* C1


Control function CodeManually operated 0

Seat seal CodePTFE 5PEEK (for bonnet size 0) PK

Bonnet size CodeHandwheel diameter 32 mm 0Handwheel diameter 90/140 mm -

Connection CodeButt weld spigotsSpigots DIN 0Spigots DIN 11850, series 1 16Spigots DIN 11850, series 2 17Spigots DIN 11850, series 3 18Spigots SMS 3008 37Spigots ASME BPE 59Spigots EN ISO 1127 60Threaded connectionsThreaded sockets DIN ISO 228 1Threaded sockets BS 21 Rc 3BThreaded spigots DIN ISO 228 9Threaded sockets NPT 31FlangesFlanges EN 1092 / PN16 / form Blength EN 558-1, series 1 ISO 5752, basic series 1 8

Flanges EN 1092 / PN25 / form Blength EN 558-1, series 1 10

Clamp connectionsClamps following ASME BPE for pipeEN ISO 1127, length EN 558-1, series 1 82



K number CodeBellows 2252Handwheel extension 3007



Bonnet size DN SW1 øD

H/LAK-no. 3007*

0 8 24 hexagonal 32 81 -0 10 24 hexagonal 32 81 -0 15 24 hexagonal 32 81 -

15 41 hexagonal 90 141 17120 46 hexagonal 90 152 18225 46 hexagonal 90 156 18632 41 double fl at 90 165 19540 41 double fl at 90 176 20650 41 double fl at 90 186 21665 60 double fl at 140 246 -80 60 double fl at 140 263 -

* K number 3007 (handwheel extension) is necessary for valve bodies with fl anges

Overview of metal bodies for GEMÜ 507

Material code

1.4408(Code 37)

1.4435(Code 34)

1.4435(Code 40)

316L(Code

C1)Connection

code 1 8** 9 10** 17 31 37 59 60 0 16 17 18 37 59 60 82 86 88 0 9 16 17 18 59 60 31 3B

DN 6 - - - - - - - - - - - - - - - - - - - - X* - - - - - - -DN 8 X* - X* - - X* - - - - - - - - - - - - - X* - - - - - X* - -

DN 10 X* - X* - - X* - - - - - - - - - - - - - - - X* X* X* X* - - -DN 15 X* - X* - - X* - - - - - - - - - - - - - - - - - - X* - - -DN 10 X - - - - - - - - - - - - - - X - - - - - - - - - - - -DN 15 X - X X X - - - X X X X X - X X X X X - - - - - - - X XDN 20 X - X X X - - - X X X X X - X X X X X - - - - - - - X XDN 25 X - X X X - - - X X X X X X X X X X X - - - - - - - X XDN 32 X - X X X - - - X - X X X - - X X X - - - - - - - - - -DN 40 X - X X X - - - X X X X X X X X X X X - - - - - - - X XDN 50 X X X - X - - - X X X X X X X X X X X - - - - - - - X XDN 65 X - X - X - X X X - - - - - - - - - - - - - - - - - - -DN 80 X - X - X - X X X - - - - - - - - - - - - - - - - - - -

* only with bonnet size 0 ** only with K number code 3007

66 Globe valves I Valve body dimensions

Valve body dimensionsAngle seat globe valves GEMÜ 507, 514, 550, 554

Butt weld spigots [mm] Valve body material: 1.4435 (code 34), 1.4408 (code 37)

DNMaterial code 34

Material code 37

Connection code0 16 17 18 37 59 60

LS LB LS LB d s d s d s d s d s d s d s10 105 35.5 - - - - - - - - - - - - - - 17.2 1.615 105 35.5 100 33 18 1.5 18 1.0 19 1.5 20 2.0 - - 12.70 1.65 21.3 1.620 120 39.0 108 33 22 1.5 22 1.0 23 1.5 24 2.0 - - 19.05 1.65 26.9 1.625 125 38.5 112 32 28 1.5 28 1.0 29 1.5 30 2.0 25.0 1.2 25.40 1.65 33.7 2.032 155 48.0 137 39 - - 34 1.0 35 1.5 36 2.0 - - - - 42.4 2.040 160 47.0 146 40 40 1.5 40 1.0 41 1.5 42 2.0 38.0 1.2 38.10 1.65 48.3 2.050 180 48.0 160 38 52 1.5 52 1.0 53 1.5 54 2.0 51.0 1.2 50.80 1.65 60.3 2.065 - - 290 96 - - - - 70 2.0 - - 63.5 1.6 63.50 1.65 76.1 2.080 - - 310 95 - - - - 85 2.0 - - 76.1 1.6 76.20 1.65 88.9 2.3

Butt weld spigots [mm] Valve body material: forged body 1.4435 (Code 40)

Connection code 0 16 17 18 60 59DN LS LB ø d s ø d s ø d s ø d s ø d s ø d s8* 80 26.5 10 1.0 - - - - - - 13.5 1.6 - -

10* 80 26.5 - - 12 1.0 13 1.5 14 2.0 - - 12.7 1.6515* 80 26.5 - - - - - - - - - - 12.7 1.65

* only with operator size 0

67Globe valves I Valve body dimensions

The S560 valve body dimensions are on page 29.

Threaded sockets, connection code 1 [mm] Valve body material: 1.4408 (code 37)

DN L1 LB G t SW28* 65 19.0 G ¼ 9.0 17 hexagonal

10* 65 19.0 G ⅜ 9.0 24 hexagonal15* 65 19.0 G ½ 9.0 24 hexagonal10 65 16.5 G ⅜ 9.0 27 hexagonal12 65 17.0 G ½ 9.0 27 hexagonal15 65 17.0 G ½ 9.0 25 hexagonal20 75 18.0 G ¾ 11.0 31 hexagonal25 90 24.0 G 1 12.0 39 hexagonal32 110 33.0 G 1¼ 14.0 48 octagonal40 120 30.0 G 1½ 14.0 55 octagonal50 150 40.0 G 2 15.0 66 octagonal65 190 46.0 G 2½ 22.0 85 octagonal80 220 50.0 G 3 25.0 100 octagonal


Threaded sockets NPT, BS 21 Rc, connection code 31, 3B [mm]Valve body material: 1.4408 (Code 37), 316L (Code C1)

Connection code31 3B

DN L1 LB SW2 G t G t8* 65 19.0 17 6 ¼" NPT 10.0 - -

10* 81 27.0 24 6 ⅜" NPT 10.4 - -15* 81 27.0 24 6 ½" NPT 13.6 - -15 81 24.5 27 6 ½" NPT 13.6 Rc ½ 15.020 87 24.0 32 6 ¾" NPT 14.0 Rc ¾ 16.325 104 31.0 41 6 1" NPT 16.8 Rc 1 19.040 136 38.0 55 8 1½" NPT 17.3 Rc 1½ 21.450 165 47.5 70 8 2" NPT 17.7 Rc 2 25.7


Threaded spigots, connection code 9 [mm]Valve body material: 1.4408 (Code 37),

1.4435 (Code 40)DN L9 LB I G6* 65 19 12 G ¼8* 65 19 12 G ⅜

10* 65 19 12 G ½15* 65 19 12 G ¾15 90 25 12 G ¾20 110 30 15 G 125 118 30 15 G 1¼32 130 38 13 G 1½40 140 35 13 G 1¾50 175 50 15 G 2⅜65 216 52 15 G 380 254 64 18 G 3½



Valve body dimensionsAngle seat globe valves GEMÜ 507, 550

Angle seat globe valves GEMÜ 507, 550, 554

LB

k

dL

D

Flanges, connection code 8, 10 [mm]Valve body material: 1.4408 (Code 37)

DN L LB ø D d K Numberof bolt holes

15 130 33 95 14 65 420 150 45 105 14 75 425 160 44 115 14 85 432 180 51 140 18 100 440 200 52 150 18 110 450 230 50 165 18 125 4

Clamp connections, connection code 82, 86, 88 [mm]Valve body material: 1.4435 (Code 34)

Connection code82 86 88

DN NPS LB LC d1 d3 d1 d3 d1 d315 ½" 48.0 130 18.1 50.5 16 34.0 9.4 25.020 ¾" 54.0 150 23.7 50.5 20 34.0 15.75 25.025 1" 56.0 160 29.7 50.5 26 50.5 22.1 50.532 1¼" 60.5 180 38.4 64.0 32 50.5 - -40 1½" 67.0 200 44.3 64.0 38 50.5 34.8 50.550 2" 73.0 230 56.3 77.5 50 64.0 47.5 64.065 2½" 96.0 290 72.1 91.0 66 91.0 60.2 77.580 3" 95.0 310 84.3 106.0 81 106.0 72.9 91.0


Valve body dimensionsGlobe valve GEMÜ 512

Flanges, connection code 8, 11 [mm] Valve body material: GG 25 (Code 8), GS-C (Code 11), 1.4408 (Code 37), 1.4581 (Code 38)

Material code 8, 37 8 37 11, 38Connection

code 8 11

DN L ø D ø K ø L Number ofbolt holes ø d1 C H1 H1 ø D ø K ø L Number of

bolt holes ø d1 C H215 130 95 65 14 4 45 14 39 - 95 65 14 4 45 16 4020 150 105 75 14 4 58 16 48 - 105 75 14 4 58 18 4025 160 115 85 14 4 68 16 54 - 115 85 14 4 68 18 4032 180 140 100 18 4 78 18 67 - 140 100 18 4 78 18 7240 200 150 110 18 4 88 18 72 - 150 110 18 4 88 18 7250 230 165 125 18 4 102 20 80 - 165 125 18 4 102 20 8365 290 185 145 18 4 122 20 97 120 185 145 18 8 122 22 12080 310 200 160 18 8 138 22 109 146 200 160 18 8 138 24 146

100 350 220 180 18 8 158 24 130 - - - - - - - -

Flanges, connection code 39, 40 [mm] Valve body material: GG 25 (Code 8), GS-C (Code 11), 1.4408 (Code 37), 1.4581(Code 38)

Material code 8, 11, 37, 38 8 11, 37,

38 11, 38

Connection code 39 40

DN L ø D ø K ø L Number ofbolt holes ø d1 C H1 H1 ø D ø K ø L Number of

bolt holes ø d1 C H215 130 88.9 60.5 15.75 4 35.1 11.2 39 40 95.3 66.5 15.75 4 35.1 14.2 4020 150 98.6 69.9 15.75 4 42.9 12.7 48 40 117.3 82.6 19.05 4 42.9 15.7 4025 160 108.0 79.2 15.75 4 50.8 14.2 54 40 124.0 88.9 19.05 4 50.8 17.5 4032 180 117.3 88.9 15.75 4 63.5 15.7 67 72 133.4 98.6 19.05 4 63.5 19.1 7240 200 127.0 98.6 15.75 4 73.2 17.5 72 72 155.4 114.3 22.35 4 73.2 20.6 7250 230 152.4 120.7 19.05 4 91.9 19.1 80 83 165.1 127.0 19.05 8 91.9 22.4 8365 290 177.8 139.7 19.05 4 104.6 22.4 97 120 - - - - - - -80 310 190.5 152.4 19.05 4 127.0 23.9 109 146 - - - - - - -

100 350 228.6 190.5 19.05 8 157.2 23.9 130 - - - - - - - -

The GEMÜ 312 and 314 valve body dimensions are on pages 49 and 52.

Number


Valve body dimensionsGlobe valve GEMÜ 520

Flanges, connection code 8 [mm]Valve body material: GG 25 (Code 8), 1.4408 (Code 37)

DN L ø D ø k Z ø d ø g bH1

Material code8 37

65 290 185 145 4 18 122 20 97 12080 310 200 160 8 18 138 22 109 146

100 350 220 180 8 18 158 24 130 -125 400 250 210 8 18 188 23 151 -150 480 285 240 8 22 212 23 172 -

The GEMÜ 563/568 valve body dimensions are on page 58 .

Flanges, connection code 11 [mm]Valve body material: GS-C 25 (Code 11)

DN L ø D ø k Z ø d ø g b H165 290 185 145 8 18 122 22 12080 310 200 160 8 18 138 24 146

100 350 235 190 8 22 162 24 164125 400 270 220 8 26 188 26 155150 480 300 250 8 26 218 28 165

Flanges, connection code 39 [mm]Valve body material: GG 25 (Code 8), GS-C 25 (Code 11), 1.4408 (Code 37)

DN L ø D ø k Z ø d ø g bH1

Material code8 11* 37*

65 290 177 140 4 19.1 104 22.5 97 120 12080 310 190 152 4 19.1 127 24.0 109 146 146

100 350 229 191 8 19.1 157 24.0 130 164 164125 400 254 216 8 22.4 186 24.0 151 155 -150 480 279 241 8 22.4 215 25.0 172 165 -

* DIN fl ange drilled to ANSI Class 150


Valve body dimensionsGlobe valves GEMÜ 530, 534

Pressure / temperature correlation for globe valve bodiesConnection

codeMaterial

codeMax. allowable pressure (barg) *

20° C 50° C 100° C 150° C 200° C 250° C 300° C8 8 16.0 16.0 16.0 14.4 12.8 11.2 9.6

39 8 13.8 13.8 12.8 11.3 9.8 - -11 11 39.0 37.2 34.1 31.7 28.4 26.0 23.539 11 19.7 19.7 17.7 15.8 14.0 12.1 10.240 11 39.0 37.2 34.1 31.7 28.4 26.0 23.511 38 39.8 38.8 36.0 33.3 . 29.4 27.539 38 19.0 19.0 16.0 14.8 13.6 12.1 10.240 38 39.8 39.3 36.4 33.4 31.1 29.0 26.98 37 16.0 15.4 14.0 12.5 10.5 10.0 9.0

39 37 16.0 15.4 14.0 12.5 10.5 10.0 9.0* The valves can be used down to -10°C

KL

D

L

Flanges, connection code 8, 10 [mm]Valve body material: 1.4408 (Code 37)

DN L ø D ø K ø L Number of bolt holes15 130 95 65 14 420 150 105 75 14 425 160 115 85 14 432 180 140 100 18 440 200 150 110 18 450 230 165 125 18 4

Pressure / temperature correlation for globe valve bodiesConnection

codeMaterial

codeMax. allowable pressure (barg) *

RT°C 50° C 100° C 150° C 200° C8 90 16.0 16.0 16.0 15.2 14.78 37 14.6 13.9 12.4 11.2 10.3

10 37 22.8 21.7 19.4 17.6 16.1* The valves can be used down to -10°C RT= Room Temperature

72 Globe valves I GEMÜ regulating and control systems

GEMÜ regulating and control systemsSystem solutions from a single source. Utilising the extensive GEMÜ product range, the capability to solve liquid handling problems are endless. Whether you are controlling and regulating pressure, temperature, fl ow, fi lling level or whetheryou need to control or regulate chemical and physical

variables of liquid and gaseous media, we have the potential solution for you. A few practical application examples are shown on the following pages.

Manual controlDirect local manual operation is the easiest way to exert an infl uence on a system with an adjustable valve. The volumetric fl ow in a pipe can be set or pre-regulated by a manual valve, e.g. GEMÜ 507.

Flow control

Automatic controlThe fi rst step in the direction of automation is represented by the use of a pneumatically controlled valve in connection with a simple positioner or a motorized valve without feedback. They are normally supplied with the appropriate positioning commands by a central control unit.

Temperature control

Central controlThe next evolutionary stage is the use of a pneumatically controlled valve in connection with a positioner or a motorized valve also controlled by a central control unit. But here the physical variable to be regulated is detected by a sensor and compared with the set value. The central control unit then passes on the positioning command to the globe valve with positioner.

Pressure control

Distributed control Within the scope of fl exible automation, more and more control and regulating tasks are being distributed. This means decentralized control circuits with integrated process controllers are being installed locally in the system.This structure relieves central control units of control tasks.

Pressure control

GEMÜ 507

Positioning command valve

GEMÜ 554 withGEMÜ 1434 μPosor GEMÜ 568

Back fl ow

Supply

GEMÜ 512 with GEMÜ 1435 ePos

Back fl ow

Supply

GEMÜ 3120 GEMÜ 520 with GEMÜ 1436 cPos

73Globe valves I GEMÜ regulating and control systems

The applications shown on the page opposite are examples of positioning and control tasks of varying complexity. The following table compares the four simplifi ed basic types and describes their advantages and disadvantages.

Type of control and regulating task Manualcontrol

Automaticcontrol

Centralcontrol

Distributedcontrol

Features Manual valve Pneumatic valve,motorized valve

ON/OFF

Pneumatic valve with digital positioner

Pneumatic valve with digital

positioner incl. process controller

Controllability not possible possible good goodInvestment costs low medium medium highRepeatability low medium good very goodDistributed local access very good good good goodIntervention by central control not possible good good goodUse in widely branched systems not possible good good very goodLoad on the automation system low high high lowEff ects in event of failure of the automation system low medium medium low

Eff ort to change the basic setting of the process values low medium high low

Local display of the process values without additional costs poor medium medium good

Eff ort required for later modifi cations of additional functions high high high low

Since every application is diff erent, the respective basic type must be selected and modifi ed accordingly.

74 Globe valves I Selection of globe valves for positioning and control tasks

Selection of globe valves for positioning and control tasks

Control valves have a direct eff ect on the fl ow (indirectly on pressure, temperature, concentration etc.). This eff ect depends on the valve orifi ce/opening. In globe valves the appropriate fl ow characteristics are achieved by means of a defi ned seat contour (e.g. regulating cone). A suitable valve, the right regulating cone and a suitable actuator are necessary for optimum functionality.

Positioners GEMÜ 1434 μPos, GEMÜ 1435 ePos and GEMÜ 1436 cPos are used with actuators for electro-pneumatic solutions. The stroke or position of the regulating cone is changed by regulating the control pressure. In motorized solutions, the motor controls this position directly.

GEMÜ globe valves for control tasks are optimised particularly in the following areas:

inner geometry favourable to the fl ow even in a partially • open state

long stroke distance at simultaneously low cross-sectional • increase at the valve seat

jolt-free actuation•

long life with regard to the actuating frequency•

By using regulating needles, regulating cones and regulating cages they can be optimally designed for the fl ow range to be controlled and the diff erent characteristics required. They are used preferably for clean media, especially steam and gases. Diaphragm valves are to be preferred for sterile applications or media contaminated by particles. Usually only ball valves can be considered at high pressures, and only gate valves and butterfl y valves for large nominal sizes.

Problems which can occur due to an inadequate design of globe valves for positioning and control tasks are listed below.

poor control results due to the wrong valve design•

premature wear with regard to cavitation and unacceptable • noise

Poor control results due to the wrong valve design

Due to absence of or incorrect calculation of the Kv values, often only a small part of the possible control range is exploited or the minimum or maximum fl ow is not reached.

If only a small part of the possible control range of the valve is exploited, the slightest changes in the set value usually lead to unacceptably large fl uctuations in the valve opening, the fl ow and therefore the infl uenced process parameters. The setting of the control parameters on the controller or the motorized actuator is very diffi cult as a result and often impossible because the valve stroke can no longer be set with suffi cient precision or the system-related hysteresis is too great. The static and dynamic control behaviour is generally more inaccurate. In positioning valves in an open control circuit, the fl uctuations of the fl ow values increase at the same set value specifi cation.

Valves with too big a nominal size are often chosen. Because of the mechanical tolerances of the valve seat and the regulat-ing cone, it is no longer possible to control the fl ow in the low-est part of the control range. A reproducible control of the fl ow without additional technical eff ort is only possible from about 5-10% of the maximum fl ow value. If the valve selected is too big, the smallest reproducible adjustable opening may be big-ger than the required minimum fl ow. For this reason valves with a reduced seat diameter or narrower tolerances are often required. The standard regulating cones shown on page 84 of the brochure represent the most popular ranges. Valves with a reduced valve seat and narrower tolerances are also off ered by GEMÜ but are not listed in this brochure.

The positioning ratio of the valve cannot be assessed without analysing the required Kv value range. The positioning ratio is understood as the maximum opening required in relation to the minimum opening. GEMÜ recommends a positioning ratio of 10:1. Greater positioning ratios are possible (up to 100:1) but require additional measures in the valve mechanics and optimum installation conditions.

GEMÜ off ers globe valves with piston actuators with reduced slipping-sticking eff ects. In these valves the friction inside the valve is reduced to the extent that they operate extremely jolt-free and can therefore be controlled well.

75Globe valves I Selection of globe valves for positioning and control tasks

Premature wear with regard to cavitation andunacceptable noise

Problems may occur in the selection of valves and control fi ttings due to cavitation. Damage to the interior valve fi tting, the valve body or the pipe is possible. In addition, loud noise of a high frequency may occur.

Cavitation is the formation of steam bubbles in liquids. It occurs when the local static pressure in a liquid drops below the critical value. This condition can occur, for example, at the constriction between the valve seat and the regulating cone. If the pressure rises again after the constriction, the steam bubbles collapse again, virtually imploding. This creates liquid jets of a high speed which can cause damage when they hit the interior valve fi ttingor the pipe. Molecules are ejected from the surfaces of the adjacent components. Cavitation causes premature wear and failure of the components.

In order to prevent cavitation, the exit speed of the liquid at the valve seat should not be too high. The maximum fl ow speeddepends on the medium and must therefore be assessed individually. 20 m/s is often cited as the maximum speed for liquids in literature. Aerodynamic fl ow noise due to turbulent currents in gases may occur in addition to the noise caused by cavitation. The maximum permissible exit speeds are about 0.6 mach.

In addition to the correct valve design, the course of the pipe before and after the valve also infl uences the fl ow. No bent pipe sections should be installed directly before and after the valve. The free outlet distance should be at least 10 times the length of the valve diameter. As large a pipe nominal size as possible should be used for the outlet.

76

Notes for selecting positioners

Globe valves I Notes for selecting positioners

The optimum function of a control system is not solely achieved by the selection of the positioner. All system components must be optimally adapted to each other.

If not achieved, poor positioning and control results will be observed. The greater the demands with regard to control accuracy, positioning ratio, cavitation and optimum operating and procurement costs, the more careful a selection must be made.

Electro-pneumatic positioners

Electro-pneumatic positioners are most frequently used as positioners or as combined position and process controllers for control functions. Because of the more favourable procure-ments costs in comparison with motorized actuators, electro-pneumatic positioners are used wherever control air is already available. The combination of electro-pneumatic positioners and compressed air controlled valves is basically determined by the control task.

GEMÜ has developed a complete range of positioners for performing various diff erent control tasks. The electro-pneumatic positioner range comprises the GEMÜ 1434 μPos, GEMÜ 1435 ePos and GEMÜ 1436 cPos.

GEMÜ 1434 μPos - a simple, low cost positioner for single • acting linear actuators without display and setting keys.

GEMÜ 1435 ePos and GEMÜ 1436 cPos are positioners for • use in demanding applications. They can be adapted individually to the control task with the front keypad and display

GEMÜ 1436 cPos as a process controller with integrated • positioner

In addition, the relation between the air output of the positioner, required control pressure and the size of the valve actuator still plays a role. This relation determines the valve's operating time. Depending on the control task and range of the valve, shorter operating times and therefore higher fl ow volumes through the control valves in the positioners are necessary. The GEMÜ 1434μPos positioner was specially developed for small linear actuators.

Normally the pilot pressure for a globe valve is controlled in a positioner and a certain valve opening set as a result. The GEMÜ 1436 cPos additionally off ers an optional process control circuit for controlling the process. It can be used as a local processcontroller and thus relieves the load on the central control system.

Independently of the correct valve design, the valve must be positioned with the positioner and the necessary sensors at the "right place" in the pipe system. Only then is an optimum function guaranteed. With electro-pneumatic positioners, for example, generally pressure and fl ow sensors should always be installed before the valve, temperature and pH value sensors after the valve.

Electrical positioners and control actuators

GEMÜ off ers the 563/568 series and SideStep (548, 558, 9548, 9568) for applications in which no compressed air supply is available or would be too expensive. These actuators are an optimum alternative in sterile environments or off er reduced "Total Costs of Ownership“. The procurement costs for a motorized valve are a little higher but there may be a cost advantage in terms of total life cycle costs. The actuators are comparable with the electro-pneumatic positioners in their functionality. They are available with both integrated positioner and combined position and process controller.

The GEMÜ 1283 3-point controller is available for actuators without integrated controller.

77

In addition to the process parameters and the control system for which a positioner must be suitable, other technical functions and properties also play an important part in the selection of the right positioner.

To make your choice easier, we have placed the four GEMÜ positioners in a comparison based on important features.

Overview of GEMÜ positioners

Globe valves I Overview of GEMÜ positioners

Electro-pneumatic positioners for pneumatic actuators

3-point control-ler for motorized

actuators

Function / Features 1434 μPos 1435 EPos 1436 cPos 1283Controller typePositioner ● ● ● ●Process controller ●Control air fl owVersion 1 15 l/min 50 l/min 100 l/minVersion 2 90 l/min 180 l/minOperationLocal display / keypad ● ● ●Status display ● ● ● ●Web browser user ●Field bus option (Profi bus DP, Device Net) ●Signal2-wire ●*24V DC / 3-wire ● ● ● ●HousingPlastic ● ● ●Aluminium ●FunctionsAutomatic initialisation ● ● ● ●Alarm / error outputs ● ●Min/max positions adjustable ● ● ●MountingDirect mounting to linear actuators ● ● ● ●Remote mounting to linear actuators ● ● ● ●Direct mounting to quarter turn actuators ● ●Remote mounting to quarter turn actuators ● ●Control function of valve actuatorControl function 1, normally closed (NC) ● ● ●Control function 2, normally open (NO) ● ● ●Control function 3, double acting (DA) ● ●Motorized actuators ●

* under development

78

GEMÜ 1434 µPosElectro-pneumatic positioner

Globe valves I GEMÜ 1434 µPos

Construction

The GEMÜ 1434 μPos digital positioner detects the valve position via its longlife travel sensor. It was specially designed for small linear valve actuators and has a light, plastic and aluminium housing.

Features/Functions

Automatic initialisation by 24 VDC signal•

Automatically optimises the valve control during initialisation•

No air consumption when idle•

Suitable for single acting linear actuators•

Push-in pneumatic air connectors•

AdvantagesCompact construction, small dimensions•

Remote mounting of positioner and travel sensor is possible•

Integrated potentiometer•

Low investment costs•

Low operating costs, no air consumption when idle•

Fast commissioning, no need to open the housing•

Simple operation•

Easy mounting to GEMÜ valves and other makes•

Simple electrical and pneumatic connection•

Speed-• AP function

Technical data:Air output: 15 l/min

Dimensions: 42 x 42 x 95 mm

Protection class: IP 65

Integrated travel sensor: 10 mm, 30 mm

Electrical connection: M12 connector

Pneumatic connection: M5

Power supply: 24 VDC

Input signal: 4 - 20 mA (optional 0 - 20 mA, 0 - 10V)

Initialisation input: 24 VDC

Output signals: optional 0 - 20 mA, 4 - 20 mA, 0 - 10V

Control air: 0 - 10 bar

Total error: < 1%

Temperature range: 0°C to 60°C

79

GEMÜ 1435 EPosElectro-pneumatic positioner

Globe valves I GEMÜ 1435 EPos

Construction

The GEMÜ 1435 ePos digital electro-pneumatic positioner detects the valve position via its longlife travel sensor. It has a solid metal housing with protected operating buttons and an easy to read LC display with background light. The operating times can be set by integrated throttles.

Features/Functions

Simple, self-explanatory menu•

Automatic initialisation function•

Automatically optimises the valve control • during initialisation

Fail safe function in case of compressed air and power sup-• ply failure


Adjustable digital outputs for limit values•

Adjustable alarm functions•

Operation by fascia buttons•

Suitable for quarter turn or linear actuators•

Can be used for single or double acting actuators•

AdvantagesRemote mounting of positioner and travel sensor is possible•

Low operating costs, no air consumption when idle•

High air output for larger actuators•

Fast commissioning•

Simple operation•

Easy mounting to the valve•

Simple electrical connection by detachable terminals•

Speed-• AP - function

Technical data:Air output: 50 l/min, 90 l/min

Connection: 3/4-wire

Power supply: 24 VDC ±10%

Set value: 0/4 - 20 mA, 0 - 10 V

Actual value feedback: 0 - 10 V (4-20 mA optional)

Output signals: 24 VDC, digital output


Total error: < 1%

Temperature range: 0°C to 60°C (-20°C to 60°C with heating element)

80

GEMÜ 1436 cPosElectro-pneumatic positioner with integrated process controller

Globe valves I GEMÜ 1436 cPos

Construction

The GEMÜ 1436 cPos digital electro-pneumatic positioner with an integrated process controller is for the control of liquids, gases and steam. The signals coming from the process sensor (e.g. fl ow, level, pressure, temperature) are detected by the optional process controller and adjusted according to the specifi ed set value. The membrane keypad and the backlit display are arranged at the front. Pneumatic and electrical connections are at the rear. Integrated pneumatic throttles allow regulation of the control air to adapt the controller to diff erent valve actuators and actuating speeds.

Features/Functions

PID process controller available•

Remote control•

Diagnostics, alarms, monitoring•

Integrated Web browser capability•

Parameter sets can be saved and reloaded•

User levels (access authorisation)•

Field bus: Profi bus DP, Device Net•

Serial communication (notebook, industrial modem)•

Optional wireless communication via Bluetooth•

Simple, self-explanatory menu•

Automatically optimises the valve control • during automatic initialisation

Fail safe function in case of compressed air and power sup-• ply failure

Optional digital inputs•

Freely confi gurable relay outputs•

Advantages

Parameterization during operation •

Remote mounting of positioner and travel sensor is possible•

Low operating costs, no air consumption when idle •

High air output for larger actuators•


Simple operation•


Easy mounting to the valve•

Speed-• AP functione• .sy-com interface

Technical data:Air output: 100 l/min, 180 l/min

Connection: 4-wire

Power supply: 24 VDC ±10%

Set value input: 0/4 - 20 mA

Actual value input for positioner: Potentiometer (travel sensor)

Actual value input for process controller: 0/4 - 20 mA

Output signals: 4 - 20 mA, 2x relay output

Interfaces: RS 232, Profi bus DP


Total error: < 1%


81Globe valves I GEMÜ 1436 cPos

The e.sy-com interface

With the e.sy-com interface it is possible to connect diff erent equipment with the GEMÜ 1436 cPos.Thanks to the integrated web browser, a user-friendly environ-ment was created that enables use without software installation, and it only requires a standard internet browser (Opera, Windows Explorer, Firefox).A number of diff erent operating and monitoring possibilities for programming, evaluation and diagnostics are available to the user. The integration of graphical analysis in the software enables the representation of all relevant data for control in real time curves, supports the user in the exact analysis of his position and process control and helps him to set the PID parameters.

In addition, the e.sy-com gives the possibility to download all parameters of the GEMÜ 1436 cPos as a text fi le or as a parameter fi le and to save them on a PC or laptop. This parameter fi le canthen be loaded on other controllers and accelerates the commissioning of identical plant or machine parts.

Intuitive operation Upload and download function Graphical analysis

Modem Modem Notebook

Telephone network

Bluetooth

Modem Notebook

Telephone network

Notebook

82

GEMÜ 12833-point controller


Construction

The GEMÜ 1283 is used for the manual or automatic setting or regulation of motorized valves, e.g. GEMÜ 563/568, 613/618 and 693/698. The 3-point controller compares the set value en-tered via the fascia keys or a 0/4 - 20 mA standard signal with the actual detected value from the motorized valve. The valve ad-justment Open/Closed is initiated by relays. These are ener-gized until the diff erence between the actual and set value is less than the switching hysteresis.The switch points are adjustable with the fascia keys as an opening or closing stroke limit over the whole control range.

Features/Functions

Suitable for panel mounting or direct mounting to the valve•

Two relay outputs for valve control•

Readjustment of the valve position•

Easy to read 7-segment display•

Automatic setting of end position•

Adjustable opening or closing stroke limitation•

Automatic initialisation•

Optional process control via second actual value input for • process variables

AdvantagesSimple menu•

Adjustable dead zone•

Adjustable min/max limitation of stroke position•

Reliable electronic system for maintenance-free function•

Compact construction•

Direct or remote mounting to motorized valves•


Technical data:Connection: 4-wire

Power supply: 230 V AC

Set value input: 0/4 - 20 mA, 0 - 10 V optional

Actual value input 1(motor position): Potentiometer (travel sensor)

Output signals: 2x relay output

Total error: < 1%


Actual value input 2(optional actual valueinput for process variable): 0/4 - 20 mA

83

Specifi cation sheet for designing regulating cones for globe valves

Globe valves I Specification sheet

Project (customer)DateContact person

Calculation number (GEMÜ)TelephoneE-Mail

Requirement characteristic 1st operating pointmaximum fl ow

2nd operating pointmedium fl ow

3rd operating pointminimum fl ow

Media temperature 4) °C °C °C

Inlet pressure □ relative pressure □ absolute pressure bar bar bar

Outlet pressure □ relative pressure □ absolute pressure bar bar barFlow rate 2, 3)

in [m³/h] for liquids m³/h m³/h m³/h

Gases □ Standard condition □ Operating condition m³/h m³/h m³/h

in [kg/h] for steam kg/h kg/h kg/hAccuracy requirement 6)

for fl ow % full fl ow

% full fl ow

% full fl ow

Technical requirements

Liquid or gas? 1) For media other than water or air, it is useful to give data for the viscosity of liquids and the density of gases. Otherwise we will as-sume data for standard conditions.For steam especially, the minimum or maximum fl ow rate should be 2) assigned to the appropriate inlet or outlet pressure. The temperature of the medium should also be taken into account.GEMÜ recommends a positioning ratio of 1: 10 (e.g. minimum fl ow 3) rate is 10 m³/h and the maximum fl ow rate is 100 m³/h). Please note that the valve only controls reliably from a fl ow of about 10% of the max. Kv value on account of the valve opening behaviour. Other

positioning ratios are possible on request or in the selection of standard regulating cones, see overleaf.The media temperature range must be specifi ed for steam 4) applications. T = 20°C is assumed unless specifi ed otherwise.This data is not absolutely necessary. A room temperature of 20° C 5) is assumed unless specifi ed otherwise. The accuracy of our control valves for the fl ow over the whole 6) characteristic is a standard +/- 10% f.f. (=full fl ow). Greater accuracies are available on request.

Medium 1)

Valv

e bo

dy /

Actu

ator

Type

Required valve DN

Max. operating pressure

Ambient temperature 5)

Max. media temperature

Connection

Body material

Seat seal □ PTFE □ Other

Control function* □ NC □ Other

Regu

latin

g co

ne

□ linear □ equal-percentage 1:25

□ Other

* Control function: NC = normally closed

84

Specifi cation sheet for designing regulating cones for globe valves

Globe valves I Specification sheet

GEMÜ standard regulating cones:Note: Because of the fi xed plug to seat interface, GEMÜ recommends you to use the 550 and 554 ranges.

Notes for using standard regulating cones:In some cases the Kv value range of the standard regulating cone does not meet the requirements of every application. It is advisable to use standard regulating cones whenever possible. The following points should be considered.

A tolerance of 10% of full fl ow is possible for the Kv value specifi cations according to the standard. This must be taken into account 1) in the determination of the maximum Kv value. It is recommendable to allow for a reserve of at least 10%.The regulating cone with the Kv value closest to the application should be selected. If regulating cones with too great Kv values are selected, 2) inaccurate positioning and control properties result, especially in the lower Kv range. It is possible that the selected valves may be able to regulate much smaller fl ows than assigned to the appropriate, specifi ed, minimum Kv values. 3) However, these values cannot be guaranteed on account of the mechanical production tolerances for standard control valves. If special regulating cones should still be necessary, we will need to design a new regulating cone for which there may be additional costs. Added 4) to this are the costs for special regulating cone and seat dimensions or tolerances which we have to add to the valve costs. Narrower tolerances are particularly necessary for large positioning ratios (>1:25). Globe valves must be installed vertically upright or inverted.5) Standard regulating cones are only available with PTFE or Elastomer seals. Metal seals are not available.6) Standard control function 1 (NC). Other control functions on request.7) Kv values are not valid for connection code 37 (butt weld spigots SMS 3008), 55 (butt weld spigots to BS 4825 Part 1), 59 (butt weld spigots 8) ASME BPE) and 88 (Clamps ASME BPE for pipe ASME BPE, length EN 558-1, series 1.

Equal-percentage regulating cones (1:25)

DN Regulating cone numberfor GEMÜ 512

Regulating cone numberfor GEMÜ 514



Regulating cone

Kv value[m³/h]

Actuator size

Regulating cone

Kv value[m³/h]

Actuator size

Regulating cone

Kv value[m³/h]

Actuatorsize

Regulating cone

Kv value[m³/h]

Actuator size

15 R S711* 0.2 - 3 1 R S611 0.3 - 5 0 R S111 0.3- 5 1G1 R S011 0.3 - 5 0

20 R S712 0.3 - 5 1 R S612 R S613 0.6 - 10 0

1 R S112 0.6- 10 2G1 R S012 R S013 0.6 - 10 0

125 R S713* 0.7 - 12 1 R S614 0.9 - 15 1 R S113 0.9- 15 2G1 R S014 0.9 - 15 132 R S714 0.8 - 14 2 R S615 1.4 - 24 2 R S114 1.4- 24 3G1 R S015 1.4 - 24 240 R S715 1.2 - 20 2 R S616 2.3 - 38 2 R S115 2.3- 38 3G1 R S016 2.3 - 38 250 R S716 1.8 - 30 2 R S617 3.6 - 60 2 R S116 3.6- 60 4G1 R S017 3.6 - 60 2

* The regulating cones listed can only be installed in cast iron valve bodies. Other Kv values apply for other body materials.For control valves ≥ DN 65 please use GEMÜ globe valves (e.g. type 520).

Linear regulating cones

DN Regulating cone numberfor GEMÜ 512




Regulating cone

Kv value[m³/h]

Actuator size

Regulating cone

Kv value[m³/h]

Actuator size

Regulating cone

Kv value[m³/h]

Actuatorsize

Regulating cone

Kv value[m³/h]

Actuator size

10 - - - - - - R S100 0.2 - 2 0G1 - - -15 R S701* 0.3 - 3 1 R S601 0.5 - 5 0 R S101 0.5 - 5 1G1 R S001 0.5 - 5 0

20 R S702 0.5 - 5 1 R S602 R S603 1.0 - 10 0

1 R S102 1.0- 10 2G1 R S002 R S003 1.0 - 10 0

125 R S703* 1.2 - 12 1 R S604 1.5 - 15 1 R S103 1.5- 15 2G1 R S004 1.5 - 15 132 R S704 1.4 - 14 2 R S605 2.4 - 24 2 R S104 2.4- 24 3G1 R S005 2.4 - 24 240 R S705 2.0 - 20 2 R S606 3.8 - 38 2 R S105 3.8- 38 3G1 R S006 3.8 - 38 250 R S706 3.0 - 30 2 R S607 6.0 - 60 2 R S106 6.0- 60 4G1 R S007 6.0 - 60 2

85

Regulating cones for globe valves

Globe valves I Regulating cones for globe valves

A simple open/close control is not suffi cient to exert a fl exibleinfl uence on the volumetric fl ow in a pipe. The volumetric fl ow must usually be set precisely to a range adapted to the control task. For this duty valves are used with regulating cones instead of the conventional valve plugs (diagram A). With increasing opening of the valve, the regulating cone changes the annular gap at the valve seat providing a defi ned control characteristic (diagram B). A suitable valve, the right regulatingcone and a suitable actuator are necessary for optimum functionality.Positioners GEMÜ 1434 μPos, GEMÜ 1435 ePos and GEMÜ 1436 cPos are used with actuators for electro-pneumatic solutions. The stroke or position of the regulating cone is changed by regulating the control pressure. In motorized solutions, the motor controls this position directly.

GEMÜ globe valves for control tasks are optimised particularly in the following areas:

inner geometry favourable to the fl ow even in a partially open • statelong stroke distance at simultaneously low cross-sectional • increase at the valve seatjolt-free actuation•

long life with regard to the actuating frequency•

Depending on the type of globe valve and the nominal size, control valve bodies may have widely diff erent geometries. Regulating ‘needles’ are used for very small nominal sizes and high pressures because they can control with high precision. At large nominal sizes, modifi ed regulating cones or regulating'cages' are preferred for weight reasons.

The most frequently used control characteristics are linear and equal-percentage 1:25 and 1:50. Linear means that the fl ow increases linearly with the opening stroke of the valve. The fl ow is 50% at the 50% open valve position. This provides good valve control over the whole stroke range.

The equal-percentage control characteristics have the character of an exponential function. In the lower range of about 10% to about 60% opening stroke, these valves can be controlled very fi nely depending on the valve stroke.

Regulating cones can be used in angle seat globe and globe valves. GEMÜ usually uses stainless steel 1.4571 for regulating cones. Special materials are available on request.

Gaskets are integrated for tight closing of valves.

Regulating coneAnnular gap

Valve spindle

Valve body

Valve stroke

Diagram A

Diagram B

Regulating needle

Regulating cone

Regulating cage

0,0

0,02

0,04

0,06

0,08

0,001

0,021

021001080604020

05:1

52:1

raenil

Kv value %

stroke %

Typical control characteristics

86

Instrumentation and accessories

Globe valves I Instrumentation and accessories

Electrical position indicatorsValves are frequently used in connection with electrical positionindicators. Diff erent versions are available from GEMÜ depending on the automation concept. The following table gives you an overview of our range. Please see the technical data sheets for detailed technical information, special versions available on request.

Automatic initialisation

Selection criteria GEMÜ 1234 GEMÜ 1235 GEMÜ 4222Valve stroke 1-10 mm (analogue) ●

Valve stroke 3-30 mm (analogue) ● ●



Valve stroke 2-20 mm (non-contact sensor)Valve stroke 2-70 mm (non-contact sensor)Valve stroke 2-20 mm (microswitch)Valve stroke 2-70 mm (microswitch)ATEX versionNon-contact end position detection by proximity switchesMechanical end position detection by microswitchesAnalogue end position detection by potentiometers ● ● ●

Programmable ● ● ●

Mechanically adjustableField bus capable ● ● ●

Integrated combi switchbox with pilot valveOptical position indication by LEDs ● ● ●

Optical position indication, mechanicalIndication valve position OPENIndication valve position CLOSEDIndication valve position OPEN and/or CLOSED ● ● ●

87

GEMÜ 1201 GEMÜ 1205 GEMÜ 1211 GEMÜ 1214 GEMÜ 1215 GEMÜ 1230 GEMÜ 1231 GEMÜ 1232

● ●● ●

●● ● ●

● ● ● ●● ● ● ●

● ● ● ●

● ● ● ● ● ● ●● ●

● ● ●●●●

● ● ● ● ● ● ●

Globe valves I Instrumentation and accessories

88

Field bus components

Globe valves I Field bus components

Instrumentation for a fi eld bus connection of valves is usually pre-assembled at the factory for delivery but is also easy to retrofi t by the customer.

The devices are usually designed for AS-interface, LON, and Profi Bus DP.

Control level

AS-Interface Masterwith integrated gateway

Profi bus DP•

ControlNet•

stand alone version

PLC

ControlNet Profi bus DP

PLC

AS-Interface power supply unit GEMÜ 4130

AS-Interface MasterGEMÜ 4112 withsoftware functions

AS-Interface extension plugGEMÜ 4150

Coupling to control level

Field level with AS-InterfaceSimple commissioning•

Free network topology•

Monitoring and supervision•

No terminating resistor• necessary

Mechanically coded fl at cable•

One cable for data end energy•

Self piercing connector•

Unshielded 2-wire cable•

Up to 62 slaves•

Master-slave principle•

AS-Interface cableGEMÜ 4170

GEMÜ 651

GEMÜ 4222

GEMÜ 1235GEMÜ 1234

GEMÜ 4160

GEMÜ 1201-1214

GEMÜ 1230-1232 GEMÜ 320-326

GEMÜ 4190

AS-Interface connectorGEMÜ 4192

Combi switchboxeswith integrated pilot valve for linear and quarter turn actuators programmable/teach mode

Electrical position indicatorsfor pneumaticallyoperated valvesprogrammable/teach mode

Digital I/O modules

Field bus components

89

Pilot valves and valve manifolds

Globe valves I Pilot valves and valve manifolds

GEMÜ provides a wide range of pilot valves and valve manifolds. The range includes pilot valves for direct mounting to pneumatic valve actuators as well as single valves, valve batteries and complete valve manifolds for assembly in a control

cabinet. In addition to the standard connection methods, pilot valves are also available for fi eld bus connections (AS-interface, LON, Profi bus, etc.).

GEMÜ 320 – 3263/2-way plastic valves Nominal size: DN 2Air output approx. 1.2 l/min

GEMÜ 330 – 3363/2-way plastic valves Nominal size: DN 1Air output approx. 0.8 l/min

GEMÜ 83573/2-way piston valve with aluminium bodyNominal size DN 6Air output approx. 1,200 l/min

GEMÜ 84585/2-way piston valve with aluminium bodyNominal size: DN 6Air output approx. 1,200 l/min

GEMÜ 85054/2-way piston valve with aluminium bodyNominal size: DN 4 / DN 7Air output approx. 700 / 1,400 l/min

GEMÜ 85063/2 and 5/2-way piston valve with aluminium bodyNominal size: DN 6Air output approx. 1,200 l/min

Valve manifold MPA2/2, 3/2 or 5/2-way valves with plastic bodyNominal size: DN 10.5 - DN 21Air output: 360 l/min., 700 l/min.Field bus capable with CPX

Modular electrical terminal CPXFor connection of valve manifolds to automation systemsField bus capableCan be combined with MPA

GEMÜ320-326

GEMÜ330 - 336

GEMÜ8357

GEMÜ8458

GEMÜ8505

GEMÜ8506

Festo MPA

2/2-way valve, plastic body ●3/2-way valve, plastic body ● ● ● ●5/2-way valve, plastic body ●3/2-way valve, aluminium body ●4/2-way valve, aluminium body ●5/2-way valve, aluminium body ● ●Nominal size DN 1 DN 2 DN 6 DN 6 DN 4 / DN 7 DN 6Air output in l/min 1.2 0.8 1,200 1,200 700 / 1,400 1.200 360 / 720Single mounting ● ● ● ● ● ●Direct mounting to pneumatic actuator ● ● ● ● ● ●Battery mounting ● ●Valve manifold ●Manual operation ● ● ● ● ● ● ●Explosion-proof rating ● ● ●

90

Instrumentation/accessories for pneumatic valves

Globe valves I Instrumentation/accessories for pneumatic valves

● optional – on requestOther options and combinations of several accessories are possible, please enquire.

Opt

ical

posi

tion

indi

cato

rs

Optical position indicator with stroke limiter and manual override, control function "Normally closed“ GEMÜ 1114

Optical position indicator with stroke limiter for control function "Normally open“ GEMÜ 1151-1161

Optical position indicator variants for all control functions available GEMÜ 1300

Optical position indicator for mounting of proximity switches, control function "Normally closed“ GEMÜ 1310

Stro

ke li

mite

rs,

seal

adj

uste

r Stroke limiter with seal adjuster for control function "Normally open“ GEMÜ 1106

Stroke limiter for control function "Normally closed“ GEMÜ 1151

Stroke limiter for control function "Normally open“ GEMÜ 1110-1161

Proximity switches mounted and adjustable GEMÜ 1216

Elec

tric

alpo

sitio

n in

dica

tors

Electrical position indicator (indication: valve open and/or closed) GEMÜ 1201-1214

Electrical position indicator ATEX GEMÜ 1205, 1211

Electrical position indicator (indication: valve open) GEMÜ 1215

Electrical position indicator (indication: valve open and/or closed) GEMÜ 1230, 1232

Electrical position indicator ATEX GEMÜ 1231

Electrical position indicator (programmable) GEMÜ 1235

Combi switchbox with integrated 3/2-way pilot valve For direct automation connection GEMÜ 4222

Con

trol

lers

Electro-pneumatic positioner For direct mounting to pneumatically operated valves (≤ DN 25) GEMÜ 1434 µPos

Electro-pneumatic positioner For direct or remote mounting to pneumatically operated valves GEMÜ 1435 EPos

Electro-pneumatic positioner with integrated process controller For direct or remote mounting to pneumatically operated valves GEMÜ 1436 cPos

Man

ual o

verr

ide,

Pi

lot v

alve

s

Pilot valve for direct mounting to pneumatically operated valves GEMÜ 324, 334

Manual override with optical position indicator GEMÜ 1002

NAMUR mounting bracket with/without handwheel GEMÜ 1450, 1460

91Globe valves I Instrumentation/accessories for pneumatic valves

GEMÜ 312/314

GEMÜ 352/354

GEMÜ 512

GEMÜ 514

GEMÜ 520

GEMÜ 530

GEMÜ 534

GEMÜ 550

GEMÜ 554

● ● ● ● ●

● ● ● ● ● ●

● ● ● ● ● ● ● ● ●

● ● ● ● ● ● ● ● ●

● ● ● ●

● ● ● ● ● ●

● ● ● ● ● ●

● ● ● ● ● ● ● ● ●

● ● ● ● ● ● ●

● ● ● ● ● ● ●

● ● ● ● ● ● ● ●

● ● ● ● ● ● ● ● ●

● ● ● ● ● ● ● ● ●

● ● ● ● ● ● ● ● ●

● ● ● ● ● ● ● ● ●

● ● ● ● ● ● ● ●

● ● ● ● ● ● ● ● ●

● ● ● ● ● ● ● ● ●

● ● ● ● ● ● ● ● ●

● ● ● ● ●

● ● ● ● ● ● ●

92

�How to order / Type key

Globe valves I How to order / Type key

The GEMÜ order system is based on the following type key which enables you to clearly defi ne the products required. When you wish to defi ne a valve, fi rst choose the type, the nominal size, the body confi guration, the connection,

the valve body material etc. and then write down the corresponding code number in the given sequence. In order to avoid mistakes we suggest that you insert oblique strokes between the individual numbers.

514 25 D 60 37 5 1 1A B C D E F G H K

A Type of valveAngle seat globe valves:

507 Metal globe valve manually operated 514 Metal globe valve pneumatically operated550 Metal globe valve pneumatically operated551 Metal globe valve pneumatically operated554 Metal globe valve pneumatically operatedS560 Plastic globe valve pneumatically operatedGlobe valves:

312 Metal globe valve pneumatically operated








558 Metal globe valve motorized

Control valves:





507 Metal globe valve manually operated512 Metal globe valve pneumatically operated







563 Plastic globe valve motorized


Available with linear, equal-percentage 1:25 or 1:50 characteristic due to factory calculation and assembly of regulating cones.

B Nominal size DN

C Body confi gurationD 2/2-way body

E Angle valve body (on request)

M Multi-port body

D Connection (body)0 Butt weld spigots, DIN

1 Threaded sockets DIN ISO 228

8 Flanges EN 1092 PN 16 form B,length EN 558-1, series 1ISO 5752, basic series 1

9 Threaded spigots DIN ISO 228

10 Flanges EN 1092 / PN25 / form Blength EN 558-1, series 1

11 Flanges EN 1092 PN 16 form B, length EN 558-1, series 1ISO 5752, basic series 1

16 Butt weld spigots DIN 11850, series 1


93

�



31 Threaded sockets NPT

37 Butt weld spigots SMS 3008

39 Flanges ANSI B 16.5, class 150,length EN 558-1 series 1

55 Butt weld spigots to BS 4825 Part 1 (on request)

59 Butt weld spigots ASME BPE

60 Butt weld spigots EN ISO 1127

3B Threaded sockets BS 21 Rc

82 Clamps following ASME BPE for pipe EN ISO 1127, length EN 558-1, series 1

86 Clamps DIN 32676 for pipe DIN 11850,length EN 558-1, series 1

88 Clamps ASME BPE for pipe ASME BPE,length EN 558-1, series 1

E Valve body material1 PVC-U (polyvinyl chloride - unplasticised, grey)

8 EN-GJL-250 (GG 25), cast iron

9 Rg 5, cast bronze

11 GP240GH (GS-C 25), cast steel

20 PVDF (polyvinylidenefl uoride)

34 1.4435 (ASTM A 351 CF3M), investment casting*

37 1.4408, cast stainless steel

38 1.4581, investment casting

40 1.4435 (316), forged body

90 EN-GJS-400 18-LT (GGG 40.3) SG iron 40.3

C1 ASTM A 351 CF3M, investment casting** Material equivalency 316 L

F Seat seal4 FPM

5 PTFE

10 Steel

14 EPDM

Other seat seals on request

G Control function for manual and pneumatic valves

0 Manually operated

1 Pneumatically operated actuator, Normally closed (NC)

2 Pneumatically operated actuator, Normally open (NO)

3 Pneumatically operated actuator, Double acting (DA)


G Operating voltage/Frequencyfor motorized valvessee product page

H Bonnet/actuator size for manual and pneumaticvalvessee product page

H Code for additional data for motorized valvessee product page

I Characteristic/Kv value formotorized valves

K Additional data

94

�How to order / Type key


Order example for manual globe valves:

Order example for pneumatic globe valves:

A B C D E F G H K

507 50 D 60 34 5 0 - 2252Valve

type

Nominal size

DN

Body confi

guration

Connection (b

ody)

Valve body m

aterial

Seal materia

l

Control fu

nction

Bonnet size

Additional d

ata

A B C D E F G H K

550 15 D 1 34 5 1 1 G 1 1781Valve

type

Nominal size

DN

Body confi

guration

Connection (b

ody)

Valve body m

aterial

Seal materia

l

Control fu

nction

Actuator s

ize

Flow directi

on

Spring se

t

Additional d

ata

95

�


Order example for motorized globe valves:

A B C D E F G H I K

563 10 D 1 1 14 L4 E2 B 16006049Valve

type

Nominal size

DN

Body confi

guration

Connection (b

ody)

Valve body m

aterial

Seal materia

l

Supply vo

ltage/

Mains f

requency

Code for

co

ntrol m

odules etc.

Additional

data

Control c

haracteris

tic

Kv value

96

Kv value

Globe valves I Kv value

Valves always exert an infl uence on volumetric fl ow. Therefore the correct design of the valve with regard to its Kv value is extremely important. The fl ow for the control task should always be in the optimum control range of the valve. If the fl ow is outside the optimum range or too close to the lower Kv value, another valve must be selected. However, it may be useful with a very wide control range, to install a second control valve so that the critical control range is optimally covered.The Kv value is the fl ow coeffi cient of a valve. It is possible to determine the Kv value of a valve in any opening position The Kvs value indicates the maximum fl ow, this is usually achieved with a fully open valve. The Cv value is the fl ow coeffi cient in US-Gal/min. Conversion between these is possible with the formula below.

Unit of measure Kv value

If the Kv value is given without a unit of measure, i.e. only a number, the unit of m³/h is assumed. If another variable is to be defi ned, the appropriate unit of measure must be after the number.

Determination of Kv value

The volume throughput of valves is measured using a diff erential pressure Δp = 1 bar. The test medium is water at 20° C. The test pressure prevailing in the pipe is irrelevant except with diaphragm valves, it is defi ned to the maximum permissible operating pressure of the valve due to diaphragm fl ex under pressure. Any valve position is possible.

Basis for calculation for Kv values

Formulae are used which take into account all the parametersand physical variables deviating from the test serve. Since liquids, gases and steam are subject to diff erent laws, diff erent formulae are also used. The original calculation formulae are very extensive, therefore the general ”simplifi ed” formulae are used in most cases. Here it is important that they cannot be fully abbreviated and the unit used respectively for the value Q or the Kv value is identical.

1 Cv = 1.17 x Kv 1 Kv = 0.86 x Cv

Δp

97Globe valves I Kv value

Pressure loss Kv for water for liquid for steam for gases

Kv

Kv

∆p<=

Kv m³/h fl ow coeffi cient of the valve ρ1 kg/m³ density of the material in the operating state T1 and p2

Q m³/h fl ow rate ρn kg/m³ density of the gas at 0°C and 1014 mbar

Qn m³/h volumetric fl ow of the gas at 0°C and 1014 mbar v' spec. steam volume at T1 and p2

Mmax kg/h (Mmin) - maximum (minimum) weight fl ow to be controlled v" spec. steam volume at p1, p2 and T1

p1 bar absolute pressure before the valve (at Q) M kg/h mass fl ow

p2 bar absolute pressure after the valve (at Q) T1 K medium temperature

Δp bar (Δp) - pressure diff erential p1 - p2 at Q

.

p12

p2> p12

∆p> p12

p2< p12

Q√∆p

= Q√∆p

= Q31.6

.√ ρ1∆p

= Q31.6

.√ ρ1∆p

= M31.6

.√ v'∆p

.

= M31.6

.√ 2 · v"p1

.

= Qn514

.√ ρn·T1∆p·p2

= Qn257· p1

.√ρn·T1

Δp

98

Basic terms of control technology

Globe valves I Basic terms of control technology

According to DIN 19226, control or controlling is a process in which the variable to be controlled is continuously measured, compared with the command variable and infl uenced in the sense of adjustment to the command variable. Typical for the control is the closed action circuit in which the controlled variable infl uences itself continuously within the control circuit. GEMÜ globe valves can be used with or without regulating cones for almost any conceivable control task. The right design of the control circuit is necessary for good, reliable functionality. The globe valve with or without regulating cone and the control or regulating device must be closely adapted to each other. This brochure should help you choose the right one. Please contact our experts if you have any further questions.

The control is characterised by:

type of control/regulation•

accuracy of the control•

controlled system and its infl uential factors•

controller type (2-point, 3-point, P, PI, PD, PID etc.)•

control task (pressure, temperature, fi lling level, fl ow, pH • value etc.)

control range of the valve (Kv and Kvs value) (details can be • found on pages 96 and 97).

The example shows a diaphragm valve with a pneumatic membrane actuator in control function ”normally closed ” and a manually operated/lockable diaphragm valve. In the regulation of volume/mass fl ow, the measuring element (actual value transmitter) should be positioned before the valve. In this way the volume fl ow on the measuring instrument is damped so that the control does not experience sudden measuring step jumps. The actual value transmitter must be positioned after the valve in pressure and temperature controls.

Control pressure controlled

Control pressureconnection P

Positioner

Process controller

Pneumaticactuator

Control pressureuncontrolled

Command variable wSet value for positioner

Process set value, command variable w

OpenMeasuring transduceror measuring instrumentWith signal output for detecting the actual process variable, e.g. volumetric flow

Q

Actual value xvalve position

PID-Control

Process actual value x

Electro-pneumatic process control

Process and position controllers exist as single and ”2 in 1” devices. If the travel is measured mechanically, the positioner must be mounted directlyon the actuator (valve). Using an electronic travel detector, the positioner can be positioned remotely from the actuator.

99

Type of control

Globe valves I Type of control

Open loop control

Control is to be understood as a process in which one or more process variables are infl uenced by one or more input variables of a system. The momentary state of the system is not normally taken into account. A control is an open action circuit without an automatic set-actual comparison. Faults are not detected by the system.

Example: To fi ll a container with a constant drain, a valve with its actuator, is opened. The fi lling level and the fi lling speed can be infl uenced by the position of the valve. When the desired fi lling level has been reached or the fi lling speed is to be changed, the valve must be actuated again. By monitoring the process over a certain period of time and repeatedly readjusting the valve position, it will be possible to keep the fi lling level constant after a certain time. However, this example works only if the process does not change.

Closed loop control

In a closed loop the actual value (controlled variable x) of a system is measured continuously and compared with the set value (the command variable w). The diff erence between these two variables is the control diff erence e or the control error xw. Depending on the measured diff erence, a positioning process is initiated to adapt the control diff erence to the command variable. Regulation is therefore a closed loop process.

In our example of a discontinuous control (see following page) this means: The container described above is equipped with fi lling level sensors. The upper fi lling level is set by a max. switch and the minimum fi lling height by a min. switch. When the level in the container reaches one of the two switches, it sends an appropriate signal to the control which passes on a positioning command to the valve. The valve adjusts the supply. The fi lling level in the container fl uctuates automatically between the min. and max. switch.

GEMÜ 507G

Drain

Filling level min/max

GEMÜ 940

Supply

Filling level

Time

Set value

GEMÜ 320

GEMÜ 534G

100

Type of control

Globe valves I Type of control

Discontinuous control

A process which takes place step by step is known as discontinuous control. The correcting variable y on the controller jumps back and forth between discrete values. Depending on how many states the correcting variable can adopt, it refers to two, three or multi-point controllers. A two-point controller onlyhas 2 switching states, ”OPEN” and ”CLOSED". Due to the erratic switching of the controller, the controlled variable x fl uctuates within a certain range around the set value. By installing energy stores and correct setting of time constants, the controlled variable x can be kept constant without too great a fl uctuation even in discontinuous control. However, this also strongly depends on the controlled system to be designed, any disturbance variables and the selection of the actuators and sensors.

If the container described above is equipped with a min. and max. switch and an on/off valve in the supply, this represents discontinuous control. The fl uctuation width of the controlled variable fi lling level depends on the installation of the level switch, the time required by the control circuit to respond and the characteristic of the valve.

Continuous control

Continuous controllers intervene continuously in the process and infl uence the actuator accordingly. The positioning process runs permanently. The correcting variable y of the controller can adopt any value within the given fl uctuation width.

In our example, the container would have to be equipped with a continuous sensor (ultrasonic or radar) and a control valve for continuous control. The sensor measures the fi lling level continuously and passes on the signal to the controller. This compares it with the set value and infl uences the valve position accordingly. If the drain is opened wider, the valve position in the supply is adapted automatically. This keeps the fi lling level in the container almost constant.

GEMÜ 920

GEMÜ 514 +GEMÜ 1435 ePos

Continuous drain

1-7 bar

Set value

Actual valuee

GEMGEM

r

S

A

0

Filling level

Time

101

Type and accuracy of the control

Globe valves I Type and accuracy of the control

Position control/positioner

In position control, the positioner only infl uences the actuator, e.g. the position of the valve. The sensor reports the controlled variable to a PLC. This compares it with the command variable, calculates the control diff erence and passes on an appropriate correcting variable to the positioner. This responds accordingly and changes the position of the valve. This variant for controlling valves is selected when a master control is available.

Process control/process controller

In a process controller, the controlled variable is reported directly to the controller which is installed locally at the valve or in a local control cabinet for example. This unites the functions of PLC and positioner. It calculates the controlled variable and passes on an appropriate signal to the valve. Modern process controllers can be set both locally on the system and by a PLC.

The design of a control circuit, the corresponding system layout and the selection of all the necessary components also depends on the control accuracy being aimed at. The narrower the tolerances of the control the more precisely the components operate and the higher the reproducibility has to be. Narrow tolerances for a control mean that the valve must be selected and designed very carefully:

Exact calculation of the necessary minimum and maximum • Kv value

Design of the valve and the control fi tting to this optimum • control range

Jolt-free actuator without slipping-sticking eff ect•

Long stroke distance at simultaneously low cross-sectional • increase at the valve seat

The valve should only be used for controlling, a stop function • (close-tight) should be covered by an additional on/off valve

Selection of the right controller type and controller•

Exact determination of positioner and valve•

The greater the accuracy of the control, the higher the costs for the components and commissioning as a rule. Under certain process conditions, high-precision controls can only be implemented after substantial eff ort. For this reason, you should consider very carefully in advance planning how accurate the control must be.

102

Temperature control / pH value control

Globe valves I Temperature control / pH value control

Temperature control

A GEMÜ 314 3/2-way valve is ideal for temperature control in a pipe. The cold water stream runs through the main pipe, the hot water fl ows through the third pipe connection of the valve. The position of the valve infl uences the hot water supply. The swirling action within the valve usually even makes a mixing insert

superfl uous. The valve position is reported to the control-ler by the GEMÜ 1434 positioner. At the same time the actual temperature value is fed to the controller from the GEMÜ 3220 temperature transmitter. The controller compares the two values and sends a new positioning command to the positioner until the set temperature value is reached.

GEMÜ 314 GEMÜ 3220

Actual value temperature

Actual value valve position

Set value valve position

GEMÜ 3220

Actuatempe

pH value control

Another application for controlling the fl ow for setting a process variable is the dosing of a precipitant such as ferric trichloride(FeCl3) or aluminium salts in a sewage treatment plant. Phosphates are chemically precipitated in a second stage after the fi rst stage, biological phosphate elimination. Ferric trichloride is dosed simultaneously. The metal ions form insoluble compounds with the phosphate, these compounds precipitate and are drawn off with the sludge.

The phosphate percentage in the water is determined by a pH value measurement. The process is controlled continuously around the clock to achieve as economical as possible a dosing. A GEMÜ 568 motorized valve without control module is ideal for controlling the precipitant. The advantage of motorized valves is that no compressed air is required at the dosing site in rural plants.

GEMÜ 568

Sewage works supply

FeCl3Ferric trichloride



Actual valuepH-value

Settling basinSecondary sedimentation

Drainage of purifi ed water

n

G

GE

103

Filling level control / dosing

Globe valves I Fil l ing level control / Dosing

Filling level control with gas pressure

A storage tank for cooling water with a continuous drain is fi lled with towns water. The uniform take-off of cooling water is ensured by the diff erential height/static pressure. For this, the level in the tank must be kept as constant as possible. Since the pressure in the supply pipe fl uctuates between 1 and 7 bar, the supply must be

regulated accordingly accurately and quickly. Continuous fi lling level control takes place via a GEMÜ 920 ultrasonic sensor with adjustable measuring range. The supply is controlled by a GEMÜ 554 angle seat globe valve with mounted GEMÜ 1434 μPos positioner.

Actual value fi lling level



GEMÜ 920

GEMÜ 554 +GEMÜ 1434 μPos

Continuous drain

Air supply

1-7 bar

Av

Se

GG

GE

GEMÜ 1283GEMÜ 920

Rinse water to the plant

Sensor for ClO2

ClO2

Actual value concentration

Fresh water

Back fl owrinse

GEMÜ 563GEMÜ 550

GEMÜ 550

Dosing

Chlorine dioxide (ClO2) is often used for disinfecting bottle cleaning plants. The concentration in the plant rinse water is measured by pH sensors. The continuous supply is controlled by a GEMÜ 563 motorized valve with PVDF valve body.

ClO2 has a high sterilisation potential and clears dirt and micro-bacterial deposits. It is often used in process water systems in which pipes and containers need to be appropriately sterile.

GE

GE

GE

G

283

104 Globe valves I Gas pressure control / steam pressure control

Gas pressure control / steam pressure controlGas pressure control for fi lling pressure control

Steam pressure control in the sterile steam generator

GEMÜ 550 +GEMÜ 1435 ePos GEMÜ 550 +

GEMÜ MPYESupply

Gas

Pressure sensor

Actual value pressure



GEMÜ 920GE


ply

G



Zyklo n


Pure steam is used to sterilise plant in the pharmaceutical industry (SIP). The steam is conditioned accordingly in a steam generator and drawn off from the top of the generator. The steam pressure (0-7.8 barg) and the steam temperature (100 – 178°C)

are controlled by a control valve. A GEMÜ 550 angle seat globe valve with a GEMÜ 1435 ePos electro-pneumatic positioner is used.

To keep the fi lling pressure in fi lling plants constant independently of the fi lling level of the storage tank, a gas pressure cushion is often used in the storage tank. The pressure cushion infl uences the accuracy and the reproducibility of the fi lling process. The pressure cushion has to be built up

and controlled very quickly due to the permanent supply and drain to and from the storage tank. GEMÜ 550 with double acting actuators are used which are controlled by a proportional valve of the MPYE series. This control is highly dynamic.

105Globe valves I Temperature control / back pressure control

Temperature control / back pressure control

Distributed back pressure control for water treatment

Temperature control of plastic injection moulding machines

GEMÜ 3030

Back flow Injection moulding tool

GEMÜ 554 +GEMÜ 1434 μPos

SupplyActual value fl ow

Actual value temperature



n

osition

3030

Set value

GEMÜ 520 +GEMÜ 1436 cPos

Back fl ow

Supply pipe

Pressure sensor

Consumers 1 - x

Actual valuepressure

cPos

The tools of plastic injection moulding machines must always be kept at a process temperature to suit the plastic and the tool for optimum quality of the produced products. The tools are usu-ally tempered by a variable, combined cooling-heating circuit

with oil and/or water. A GEMÜ 3030 fl owmeter and a GEMÜ 554 angle seat globe valve with a GEMÜ 1434 μPos positioner are used for this. Injection moulding machines usually operate 24 hours a day, 7 days a week.

Several consumers are usually connected to water treatment plants for process water. To keep the pressure in the pipe system constant at fl uctuating takeoff volumes, a back pressure control is used. The inlet pressure of the supply line is constant due to the pump. If the consumers are gradually connected, thepressure in the plant drops or increases when they are

disconnected again. The pressure sensor reports to the GEMÜ 1436 cPos process controller. This processes the signal and sets the GEMÜ 520 valve accordingly. The valve changes the fl ow volume in the back fl ow pipe and thus keeps the pressure in the supply pipe constant.

106 Globe valves I Terms of control technology

Terms of control technologyControlled variable x (actual value):

The variable to be controlled in a process is referred to as x. Controlled variables in plant construction are, for example, temperature, pressure, fl ow, pH value, hardness.

Command variable w (set value):

The command variable indicates the value which the proc-ess variable should adopt. Its value in the form of an electrical variable (current or voltage), for example, is compared with the controlled variable x.

Control diff erence e = w-x

The control diff erence is the diff erence between the controlled variable and the command variable. It is the input variable for the controlled element. The control error is exactly the same size as the control diff erence but with the inverse sign.

Correcting variable y

The correcting variable is the output variable of the controller and has a direct infl uence on the actuator. It depends on the control parameters of the controller and the control error.

Disturbance variable z

Factors which have an undesirable infl uence on a process and therefore change the controlled variables are referred to as disturbance variables.

Positioning range yh

The correcting variable y of a controller is within the positioningrange. This can be defi ned accordingly depending on the controller used.

Actuator

The actuator infl uences the process to match the controlled variable to the command variable. Actuators in plant construction are, for example, valves, pumps, heat transfer elements.

Controlled element

The controlled element creates the correcting variable from the control diff erence. The controlled element is part of the controller.

Dead zone

If a controlled variable only reacts to the changes at the actua-tor after a certain time, we refer to controlled systems with dead zone. Examples of such controlled systems are the pressurecontrol of compressible media or the continuing fl ow of a medium from a pipe into a container after a valve has been closed.

Energy store

Control processes may run with delays due to the energy stores occurring in every controlled system. This is clearly seen in heating processes. Pipes, containers and valves have to also achieve a temperature increase. At the same time, the energy loss to the environment increases with rising Δt. Energy stores have a damping eff ect on the temperature rise in the system in this case.

107Globe valves I Controlled systems

Controlled systemsControlled systems are basically characterised by their time behaviour. This determines the eff ort and the accuracy with which a control task can be solved. The jump response of the controlled system is used to represent this system dynamic. The jump response shows how the controlled variable reacts to changes in the correcting variable. Controlled systems are divided into four basic types by their timing. At the same time, a distinction must be made between systems with compensationand systems without compensation. In systems with compensation a new fi nal value is set whilst systems without compensation do not achieve a new balanced state.

P controlled systems

In P controlled systems, the controlled variable always changes proportionally to the correcting variable. Adaptation takes place without a time delay.

I controlled systems

An I controlled system exhibits an integral behaviour and has no compensation. The controlled system does not achieve a balanced state if the correcting variable is not zero. The correcting variable changes continuously so that the controlled variable rises or falls permanently.

Systems with dead zone

In controlled systems with dead zone, the controlled variable only reacts to the positioning intervention after a certain delay. This frequently leads to oscillations, especially when the controlled variable and the correcting variable change periodically in relation to each other and off set to the dead zone. Dead zones are usually caused by the process or the system design (lead times, lag times, positioning of the sensor, controller and actuator etc.). Many of these infl uential variables can be optimised by appropriate system planning for control-technical requirements. Everything else must be infl uenced by an appropriate design of the control circuit.

Systems with energy stores

Control processes may run with delays due to the use of energy stores occurring in every controlled system. This is clearly seen in heating processes. Pipes, containers and valves have to also achieve a temperature increase. At the same time, the energy loss to the environment increases with rising Δt. Energy stores have a damping eff ect on the temperature change in this case. Compensation vessels and air dampers in hydraulic systems, for example, have the same eff ect, they delay the change in pressure.Whether and to what extent the energy stores infl uence the control dynamic is diff erent in every system. It may be ignored in the design of the control circuit depending on the infl uence on the control circuit.

Complex controlled systems are usually a mixture of the four above basic types with and without compensation. For this reason the most common controllers are also combinations of the types described above.

108 Globe valves I Controller types

Controller typesController selection and controller design

It is important to conduct an exact analysis of the system to design the control circuit. Make sure that valves are only assigned one function in a control circuit to guarantee perfect design and operation. The selection of the controller depends on the controlled system (integral or proportional), the delays and energy stores, the desired speed of the control and whether a remaining control error is acceptable.

The following brief characteristics can be used as a rough guideline:

P controllers are used in easy to control systems in which a remaining control diff erence is acceptable.

I controllers are suitable for systems with a low control dynamic. The systems should not contain any long delays.

PD controllers are suitable for systems with large delays in which a remaining control error is not a problem.

PI controllers achieve a dynamic control behaviour. They can also be used for systems with delays.

PID controllers are always used when the operating time of a PI controller is insuffi cient in systems with longer delays. PID controllers are the fastest and most accurate controllers for complex control tasks.

Control tasks

The following table gives you an initial idea of which controls are to be preferred for diff erent applications. It is only a rough guide, every controlled system must be designed to meet the requirements of the actual plant.

Controlled element Control error Actuating speed

P permanent fastI idle slow

PD permanent very fastPI idle fast

PID idle very fast

Application Controller typeP PI PID

Pressure ● + +Flow - + ●Filling level + - -Temperature ● + +pH value ● + +

- unsuitable ● only conditionally suitable + suitable

109Globe valves I Controller types

P controller

A P controller is a proportionally acting controller. The initial variable (correcting variable y) is always proportional to the control diff erence. P controllers respond very quickly and have an immediate positioning eff ect but they have a permanentcontrol diff erence between the command variable and the controlled variable.The proportional action factor Kp to be set on the controller infl uences the reaction of the controller to a control error. A large Kp leads to a stronger control intervention and lower control errors. Too high a proportional action factor can, however, lead to oscillations.

Y

t

I controllers

I controllers are integrally acting controllers. A proportional relation exists between control error and actuating speed. I controllers are slower than P controllers but eliminate the control diff erence completely. The I proportion in a controller therefore leads to an increase in the accuracy.The speed of the controller depends on the integral action time Tn. The greater the integral action time, the slower the controller responds. This is because the correcting variable y only rises slowly. If too small an integral action time Tn is selected so thatthe controller reaches the given command variable faster, oscillations may occur.

Y

t

D controllers

D controllers are controllers with a diff erentiating action. D controllers only aff ect the speed with which the control diff erence changes. They therefore react very quickly independently of the control diff erence. High positioning amplitudes are achieved even at low control diff erence. It does not recognise a constant control error. D controllers are only used in practice in connection with P and I controllers.

Y

tPI controllers

A P and an I controller are connected in parallel in a PI controller. It reacts very quickly and leads to a full control without remaining control error. The control behaviour is infl uenced by the proportional action factor Kp and the integral action time Tn. PI controllers are very variable in their control.

PID controllers

In the PID controller, a D proportion is connected to the PI controller. This leads to a faster control transient, i.e. reachingthe idle state. PID controllers are particularly suitable for controlled systems with large energy stores i.e. for higher order systems.

D proportion

I proportion

P proportion

110 Globe valves I Product overview

All from a single source

Diaphragm valves, plastic or metalNominal sizes: DN 4 – DN 300

Operating pressure: up to 10 bar (applied upstream)

Operating temperature: up to 150°C

Operators: Manual bonnets, pneumatic and motorized actuators

Particular suitability: Abrasive media, sterile and ultra pure processes, medium operating pressures and temperatures, control and regulating duties with liquid media

Areas of application: Clean and contaminated, liquid and gaseous, inert and corrosive media, insensitive to particles

Butterfl y valves, plastic or metalNominal sizes: DN 15 – DN 2000

Operating pressure: up to 50 bar

Operating temperature: up to 600°C


Particular suitability: Compact, lightweight construction for low cycle duties

Areas of application: Clean liquid, gaseous, inert and corrosive media

111Globe valves I Product overview

Ball valves, plastic or metalNominal sizes: DN 6 – DN 100


Operating temperature: -40 to 160°C


Particular suitability: High temperatures, high operating pressures, high Kv values, for low cycle duties

Areas of application: Clean liquid, gaseous, inert and corrosive media and steam

Measurement and Control systemsPressure, temperature, fl ow and level measurement systems•

Display, dosing and counting units•

Electrical and electro-pneumatic positioners and • process controllers

Electrical position indicators•

Pilot valves and valve manifolds•

Field bus connections for process and pilot valves for • AS-Interface, Lon Works, Interbus-S, Profi bus

Pneumatic and motorized actuators for linear and quarter • turn valves

Process solenoid valves, plastic or metalNominal sizes: DN 2 – DN 50


Operating temperature: -10 to 90°C

Operators: Electro solenoid actuators

Particular suitability: Fast cycle duties, dosing processes, compact, lightweight construction

Areas of application: Clean liquid, gaseous, inert and corrosive media

The above information serves as a guide for the GEMÜ product range. Other values are valid dependent on valve type, material and version.

VALVES, MEASUREMENTAND CONTROL SYSTEMS Su

bjec

t to

alte

ratio

n · 1

1/20

08 ·

8824

3947

VALVES, MEASUREMENTAND CONTROL SYSTEMS

GEMÜ Gebr. Müller Apparatebau GmbH & Co. KG · Fritz-Müller-Str. 6-8 · D-74653 Ingelfi ngen-Criesbach · Tel. +49(0)7940/123-0 · Fax +49(0)7940/[email protected] · www.gemue.de

Date post:	12-Mar-2018
Category:	Documents
Upload:	truongminh
View:	215 times
Download:	1 times

Automation and Control - INTERSCAN: One Stop …interscan.org/download/Gemu_Brochure_1.pdfof manual,...

Documents