Double 3/2 N.C. solenoid valve with manual override High Flow High Pressure Solenoid Valve General The high pressure/high flow capacity solenoid valve, as not available on the market, was especially engineered by BIFFI in the early '70s for the specific operation of gas-over-oil actuators, suitable for high and low pressure, with natural gas and in ambient temperatures from -60°C to +100°C. After many tests in the range of the specific parameters, Biffi dedicated know-how and experience designed a solenoid valve which was later improved and is still in use in the '90s. About 60,000 solenoid valves are now in good operation all over the world as the heart of the high pressure pneumatic control systems. The extreme temperatures of Siberia and Africa were the test benches of our solenoid valve, as well as the hostile ambient conditions of the production platforms in the North Sea or the tropical jungle of Nigeria or Malaysia. The unit is guaranteed for good operation, and as such it is particularly suitable in those fields which are not surveyed by technical personnel, e.g. gas pipelines in remote desert areas where actuators operated by the natural gas of the line are most convenient since it is not necessary to lay power supply lines (electric, hydraulic or pneumatic). If required, it is enough to provide electric remote control signals. The reliability of operation after long periods of inactivity is a vital requirement of the field: the dynamic components of Biffi solenoid valve are specifically designed to this purpose with special PTFE dynamic seals which nullify the sticking effects due to long idle periods or extreme temperatures. Zero leakage is assured by the poppet-type trims combined with PTFE resilient seals. The high flow capacity allows the operation of large actuators even with short stroking times. Contents may change without notice F Copyright by BIFFI Italia. All rights reserved. BIFFC-0077-EN-9505 BIFFI is a subsidiary of Keystone International, Inc. Versatility is another basic characteristic of this unit: a range of materials, additional components and accessories is available to obtain a wide selection of complete control systems. A low power consumption version of solenoid valve is also available: this is a basic requirement in case of long-length electric lines to reduce the voltage drop. It is also ideal in case of electric supply from batteries, when, in lack of electric lines, actuator control is made via radio and power is supplied by solar panels. The vibrations always present in the plant piping were also taken into consideration: this is why we have designed a compact unit where the connections between the pilot zone and the power/inlet/filtering/exhaust zone are totally manifolded. The associated optional accessories to obtain special control system units were also designed to be manifolded to the solenoid valve body or to the manifold plate: this reduces as much as possible the connections by piping, which are possible points of leakage, highly increasing the total reliability of the system. Maintenance is also made easier as only the damaged component is removed from the unit. The unit needs no maintenance for its service life but, just in case, trouble-shooting is very intuitive and the maintenance operation is very quick and easy; parts can be replaced on field minimising all possible troubles to the plant process. The reliability of an entire system is due to the reliability of every single component: by choosing a Biffi solenoid valve our customer can rest assured of the trouble-free operation of his plant application. General application - Especially suitable and utilised in the gas applications: gas pipelines, gas reduction stations, compressor stations, gas gathering, storage plants, manifolds, LNG plants and everywhere high-pressure gas can be utilised as a power medium - Heavy duty service where the combination of high pressure gas supply, hostile environment, hazardous areas and extreme temperatures suggest the use of high reliability components - Generally used for control systems of gas-over-oil actuators (GPO and OGK Series) and of direct gas actuators (GIG and GIGS Series) - Also used for low pressure actuators (ALGA, ALGAS, RPD, and RPS Series) acting at low temperature 1
Transcript
Double 3/2 N.C. solenoid valve with manual override
High Flow High Pressure Solenoid Valve
GeneralThe high pressure/high flow capacitysolenoid valve, as not available on themarket, was especially engineered byBIFFI in the early '70s for the specificoperation of gas-over-oil actuators,suitable for high and low pressure,with natural gas and in ambient temperatures from -60°C to +100°C.After many tests in the range of the specific parameters, Biffi dedicatedknow-how and experience designed asolenoid valve which was later improved and is still in use in the '90s.About 60,000 solenoid valves are nowin good operation all over the world asthe heart of the high pressure pneumatic control systems.The extreme temperatures of Siberiaand Africa were the test benches of oursolenoid valve, as well as the hostileambient conditions of the productionplatforms in the North Sea or the tropical jungle of Nigeria or Malaysia.The unit is guaranteed for good operation, and as such it is particularlysuitable in those fields which are notsurveyed by technical personnel, e.g.gas pipelines in remote desert areaswhere actuators operated by thenatural gas of the line are most convenient since it is not necessary tolay power supply lines (electric,hydraulic or pneumatic). If required, it isenough to provide electric remote control signals. The reliability of operation after long periods of inactivity is a vital requirement of thefield: the dynamic components of Biffisolenoid valve are specifically designedto this purpose with special PTFE dynamic seals which nullify thesticking effects due to long idle periodsor extreme temperatures. Zero leakage is assured by the poppet-type trims combined with PTFEresilient seals. The high flow capacityallows the operation of large actuatorseven with short stroking times.
Contents may change without notice F Copyright by BIFFI Italia. All rights reserved. BIFFC-0077-EN-9505BIFFI is a subsidiary of Keystone International, Inc.
Versatility is another basic characteristicof this unit: a range of materials, additional components and accessories is available to obtain awide selection of complete controlsystems. A low power consumption version of solenoid valve is also available: this is a basic requirement incase of long-length electric lines toreduce the voltage drop. It is also idealin case of electric supply from batteries, when, in lack of electric lines,actuator control is made via radio andpower is supplied by solar panels. The vibrations always present in theplant piping were also taken into consideration: this is why we have designed a compact unit where the connections between the pilot zoneand the power/inlet/filtering/exhaustzone are totally manifolded. The associated optional accessories toobtain special control system units werealso designed to be manifolded to thesolenoid valve body or to the manifoldplate: this reduces as much as possiblethe connections by piping, which arepossible points of leakage, highly increasing the total reliability of thesystem. Maintenance is also madeeasier as only the damaged componentis removed from the unit. The unitneeds no maintenance for its servicelife but, just in case, trouble-shooting is
very intuitive and the maintenance operation is very quick and easy; partscan be replaced on field minimising all possible troubles to the plant process. The reliability of an entire system is dueto the reliability of every single component: by choosing a Biffi solenoid valve our customer can restassured of the trouble-free operationof his plant application.
General application- Especially suitable and utilised in the
gas applications: gas pipelines, gasreduction stations, compressor stations, gas gathering, storageplants, manifolds, LNG plants andeverywhere high-pressure gas can beutilised as a power medium
- Heavy duty service where the combination of high pressure gas supply, hostile environment, hazardous areas and extreme temperatures suggest the use of highreliability components
- Generally used for control systemsof gas-over-oil actuators (GPO andOGK Series) and of direct gas actuators (GIG and GIGS Series)
- Also used for low pressure actuators(ALGA, ALGAS, RPD, and RPSSeries) acting at low temperature
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Features-This solenoid valve is in the heart of thehigh pressure control systems. The standard version is fitted with:- manifold plate- control unit container with vent valve- terminal board- gas filter, condensate separator
with drain valve- exhaust check valve
-Body in anodised aluminium for highreliability in light weight; suitable forevery environment condition
-Main and pilot trims are poppet-typein order to provide bubble tightness
- Internals in stainless steel and anodised aluminium to obtain highestcompatibility with the power gas
-Sealing seats in teflon, thus grantingchemical resistance, lack of stickingand ageing effects
-Double solenoid valve in a singlebody to obtain compact design andavoid external piping interconnection
-Solenoid enclosures in weatherproofand explosionproof construction, designed and manufactured by Biffi inaccordance with European Norms(CENELEC) certified by the Italian LabCESI and in accordance with AmericanStandards certified by Factory MutualLab
-Local operation, in lack of electricalpower, by means of manual overrideconsisting in two levers, one for closingand one for opening
-Mounting on the proper manifoldplate that includes the power andexhaust ports
-Weatherproof control unit containerto increase the environmental andmechanical protection; the containerincludes a vent valve to exhaust thepilot gas and to maintain a small pressure inside the container, necessary to avoid the entry of environmental moisture. The containeris padlockable to prevent the manualoperation by non-authorised personnel.
-Gas filter unit to clean the power gas-Terminal board in weatherproof andexplosionproof construction; body andcover in die-cast aluminium
-Suitable to operate with high pressuregas with no need for pressure
reducer, thus increasing the reliabilityof the control system
-Remote control for closing and opening operation through the solenoidvalves available with various powersupply voltages
-Modular construction allowing maximum flexibility to obtain specialcontrol schematic by assemblingvarious control components directly tothe solenoid valve body or to themanifold plate; this modularity minimises interconnecting pipingbetween the control components,therefore the safety and reliability of thecomplete system is increased.
Optional features andspecial constructionsAn extensive range of optional characteristics is available. Instead ofthe standard construction we can offerthe following alternatives already studiedand experienced on field:- Materials: stainless steel for the body
only or for the whole- Body configuration: double or single
3/2 valve- Function modes: Normally closed or
Normally open- Control modes:
- one or two solenoid valves which can be variously combined with a manual override
- external pneumatic pilot signal;- electric impulsive signal: the valve is
kept actuated by means of a pneumatic timer device
- manual reset after ESD operation, tobe performed locally thus increasing the plant safety
- Action:- pilot controlled with orifice nominal
diameter of 9 mm (standard) or 12 or 15 mm (special)
- direct acting with flow orifice nominaldiameter of 0.8 or 1.25 mm or 2.5 mm (low pressure)
- Connection modes:- flanged to manifold;- 1/8 threaded ports for pilot solenoid
valves- Flow capacity: various orifices to
enable the operation of small or largeactuators within the required strokingtimes
- Ambient temperatures:- extensive experience with
temperatures as low as -60°C- heating trace for the body to
increase the operation reliability at extreme temperatures lower than -60°C
- Medium: experienced and provenselection of materials for operationwith highly corrosive sour gas
- Gas conditioning unit: gas de-hydrating unit available in case oflow working temperature and wet gas
- Supply voltages: all the standard voltages in direct or alternate currentare available; the solenoid valve
construction is for direct current, butwe accept any alternate voltage through a proper AC/DC rectifier placed on the terminal box enclosure;suppression diodes available to protect the coil from voltage transients
- Terminal box:- different dimensions in function of
the quantity and size of the cable entries and of the terminals;
- padlockable local selector switch integral with the terminal box
- Control unit container: three differentdimensions are available, according tothe size and the number of componentsfitted on the manifold plate
- Pressure measure: gauge with needle valve to check the supply pressure
All the above alternatives , already studied and experienced on field, canbe combined in various solutions toobtain the required unit.Many high pressure modular controlcomponents designed and manufactured by Biffi are available onrequest:- pneumatic pressure switches with
intervention for high, low or differentialpressure values to obtain ESD automatic operation control or prevention
- "line break" detection control device that automatically closes thepipeline valve when the rate of thepressure drop in the gasline exceedsa pre-set value
- electric signalling of the emergencyoperation (i.e., line break intervention)
- pneumatic timer device for ESDoperation delay
- pneumatic device to dedicate thegas supply from the storage tank onlyto the ESD operation, to increase thesafety of the process
- pressure regulatorsThis wide variety of solutions allows toobtain the desired control units to suit themost various customer requirements.Biffi continues with research and development in this field, always tobe in line with new technologies and customer requirements of plant automation and safety.
High Flow High Pressure Solenoid Valve
Contents may change without notice F Copyright by BIFFI Italia. All rights reserved. BIFFC-0077-EN-9505BIFFI is a subsidiary of Keystone International, Inc.
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High Flow High Pressure Solenoid Valve
Contents may change without notice F Copyright by BIFFI Italia. All rights reserved. BIFFC-0077-EN-9505BIFFI is a subsidiary of Keystone International, Inc.
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High Flow High Pressure Solenoid Valve
Contents may change without notice F Copyright by BIFFI Italia. All rights reserved. BIFFC-0077-EN-9505BIFFI is a subsidiary of Keystone International, Inc.
Power gas in pressure
Pilot gas in pressure
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Pilot gas in exhaust
Pilot gas in pressure
Manually operatedEnergisedDe-energised
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High Flow High Pressure Solenoid Valve
Contents may change without notice F Copyright by BIFFI Italia. All rights reserved. BIFFC-0077-EN-9505BIFFI is a subsidiary of Keystone International, Inc.
1 Data plate 22 Coil cover 23 Coil 2 • 4 Gap washer 25 Spring pin 2 • *6 Exhaust plug spring 2 • *7 Core enclosure 28 O-Ring 2 •9 Inlet plug pusher 2 • *10 Core spring 2
11 Inlet plug 2 • *12 Plug 413 Core ring nut 2 • *14 Inlet nozzle 215 Taper plug 216 Cover 117 Screw 618 O-Ring 2 •19 Inlet seat plug 220 O-Ring 2 •21 Piston 222 O-Ring 2 •23 Piston ring seal 2 •24 O-Ring 2 •25 Piston ring seal 2 •26 Back-up washer for O-Ring 427 O-Ring 4 •28 Inlet seat 2 •29 Seat lock ring nut 230 Index ring 131 Index ring 132 Cable terminal 133 Index ring 134 Index ring 135 Plug spring 236 O-Ring 2 •37 Spring guide 238 Pipe lock screw 239 Pusher spring 2 • *40 Wires passage pipe 241 Coil lower enclosure 242 Exhaust plug 2 • *43 Coil container 244 Core 2 • *45 Exhaust nozzle 246 Washer 247 Rivet 648 Manual override lever 249 Manual override left thrust block 150 Spring pin 251 O-Ring 2 •52 Screw 453 Spring washer 454 Manual override pin 455 Body 156 Plug 257 Manual override right thrust block 158 Screw 359 Manual override spring 260 Plug 2
- Supply medium: sweet natural gas,air, nitrogen. Sour gas version according to NACEstandard MR0175 available
- Max operating pressure: 120 bar(1700 psi). Special version up to 160 bar (2300 psi)available
- Min working pressure: 7 bar (100 psi)Special version for pressures as low as3 bar (43 psi) with max working pressure 60 bar (850 psi) available
- Ambient temperature: -30° to +100°CSpecial version for temperatures aslow as -60°C available
- Flow orifice nominal diameter: 9 mmSpecial diameters 12 and 15 mm available
- Direct acting version: 0.8, 1.25 and2.5 mm flow orifice diameters available
- Available voltage supplies:12, 24, 48, 110, 115, 125, 220 VDC110, 120V/50Hz and 120, 240V/60HzVAC
- Solenoid insulation: class H; epoxyresin moulded coils available
- Nominal power: 24W for continuos duty version (standard)9W for low consumption requirementsavailable
Explosionproof degrees:CENELEC: EEx-d IIC T5Factory Mutual: Class 1, Divisions 1 & 2, Groups C & DClass 2, Divisions 1 & 2, Groups E, F & GClass 3, Divisions 1 & 2Temperature class: T4
Weatherproof degrees:CENELEC:
IP 45 for solenoid valve stand-aloneIP 67 fitted into the control unit container
Factory Mutual:NEMA 4 fitted into the control unit container
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• Recommended spare parts; items additionally marked with * can only be supplied as awhole with the core (item 44)
High Flow High Pressure Solenoid Valve
F Copyright by BIFFI Italia. All rights reserved. BIFFC-0077-EN-9505BIFFI is a subsidiary of Keystone International, Inc.
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184
110
X
156Ø60
“Open”-“Close”instruction plate
Manual override lever
Protection pipe
M12X1
,25
Signal manifold(removable )
Socket head cap screwsM6X1 for valve fasteningto the plate (socket wrench 5mm)
Y
K
W
M
10
17
Actuatedposition
150
100
1,25
11Ø
33
16
Coil terminalsDETAIL “K”DETAIL “W”
O-ring grooveO-ring 2-13ID=10,82W= 1,78
O-ring grooveO-ring 2-25ID= 29,87 W= 1,78
O-ring grooveO-ring 2-11
ID= 7,65 W= 1,78
n° 2 leads (AWG19 cross section)
Ø9
Ø14
1,25
2
1,25
14
60.5 LJ
**
DO
B
E J L F
C
A DDC
POPC
4835 22
58
87
70
140
1025
8735
E
GH
N° 8 M8X1,25 (12mm deep)threaded holes for manifoldor valves assembly
* Connections madeby signals manifold
Note: the connection between the port “E-G”and “F-H” is made by the signals manifold (removable)
56F
40 40
110
DM
B C
A
M
M
6
28 28
40
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A = Supply port (see detail “K”)B = Outlet port “to close” (see detail “K”)C = Outlet port “to open” (see detail “K”)D = Power exhaust port (see detail “K”)E = Closing pilot valve outlet portF = Opening pilot valve outlet portG = Closing power valve pilotH = Opening power valve pilotJ-L = Pilot valves exhaust portsM = N° 3 Ø6,5 Through holes for
assembly
Weight = 4.8 KgAll dimensions are in mm
PC = 3/2 N.C. Pilot solenoid valve, with manual override (to Close)
PO = 3/2 N.C. Pilot solenoid valve, with manual override (to Open)
DC = 3/2 N.C. Pneumatic pilot/springreturn valve (to Close)
DO = 3/2 N.C. Pneumatic pilot/springreturn valve (to Open)
View from “Y”(Signals manifold removed)
View from “X”
Symbol of double 3/2 N.C.solenoid valve with manualoverride
