OAKLEAF INVESTMENT HOLDINGS 52 (Pty) ltd

is by contract the exclusive import agent and service provider in South Africa for various foreign specialist

manufacturers of

FIELD PROCESS MEASURING AND CONTROL EQUIPMENT

COMPRESSED AIR TREATMENT

OVERPRESSURE PROTECTION

VALVES AND REGULATORS

REV. 04 04 14

– a line of back

pressure regulators that have the ability to handle very high pressures and very low flows.

is a diaphragm operated, balanced trim, back pressure regulator.

a line

of high pressure regulators that have the ability to handle very high pressures and very low flows.

balanced trim

pressure regulators with high Cv's and Kel-F soft seat for ANSI Class VI shutoff

are piston operated, balanced trim pressure regulators with high pressure capability and PEEK or KEL-F soft seat for ANSI Class VI shutoff.

is a diaphragm operated, balanced trim pressure regulator.

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Optimized low rate springs for increased accuracy

Jorlon diaphragm proprietary –modified PTFE excellent for high cycling, chemical resistance, steam service

Straight throughflow : less noise , leass wear, better rangeability, longer seat life

All stainless steel internals extend seat, trim life

Heavy duty housing can withstand full inlet

pressure rating

Breather port for actuator venting

Internal sensing simplifies

installation, reduces

response time

Sliding gate trim- reduce replace trim

with ease

Jorcote advanced ceramic coating

delivers superior wear resistance and ensures

extended class IV shutoff

0,2-1/04,-2,0 ban, split ranges also available

Can change from ATO to ATC without disassembling the actuator

Mark 75 series control valves combine multiple spring actuators with the precision of jordan valves advances sliding gate seat for faster response, greater accuracy and longer seat life

Compact wafer style body dramatically

reduces the size and weight of conventional

control valves and reduces valve

and trim damage in flashing or cavitating

conditions

Available with pneumatic

actuators and a variety of

positioners , piston operators

and electric motor actuators

Shorter stroke length than conventional globe style

provides faster response and longer packing life

Bolted body bonnet enhances safety,

ensures proper alignment and

permits removal without disassembly

of control signal connections of the

actuator

Field reversible multi spring actuator

Rolling diaphragm provides constant surface area throughout entire stroke

Standard deep well socket needed to

replace seat- no special tools

required

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Flow

Sensors

• Low velocity flow rates

• High accuracy: to ± 0.50%

• Repeatability: ± 0.050%

• Verified flow coefficients

• No calibration required

• Extended turndown

• No straight run requirements

• Low permanent pressure loss

• Mass or volumetric flow

AF

Flanged

Model

Manifold

head

Weld

neck RF

flange

Retainin

g plate

Packing

follower Graphite

packing

Accelabar flow

nozzle

Transmitte

r

Veraba

r

• Improved accuracy and turndown

• Eliminates clogging of sensor ports

• Superior signal stability • Low drag – flow-induced

vibration • 5-year performance warranty

15

RTD

(optional

)

L

AF

Flanged

Model

Spring-Lock

Visual

load

indicator

Compensates

for changes in

pipe diameter Spring

travel

Pneumatic 90°

Actuators and

Accessories

Rack and Pinion Design

Optimal actuator adaptation over large

torque range.

Economical lay-out of actuators for

direct installation

Patented pressure balanced spindle

Limit

Switch

Solenoi

d Valve

Positione

r

Intelligent Electric

Actuator

AVA - Multi

Turn

AVAT – Quarter

Turn

AVAR - Economic Quarter

Turn 27

• Position indicator with

NAMUR is convenient for mounting accessories such as limit switch boxes and positioners etc

• The two independent external travel stop adjustment bolts can adjust +/-at both open and close directions easily and precisely

• Bearings and Guides made from Low friction, long-life compound material to avoid the direct contact between metals. The maintenance and replacement is easy and convenient

• NBR Rubber O rings provide trouble-free operation at standard temperature ranges. For high or low temperature applications Viton or Silicone is used

• Primarily intended as a modulating control valve

• Can also be used for shut off service

• Ideal for control of processes containing fibres and fine solids

• Widely used in industries such as paper, chemical fibre, power, mining, pharmacy, water and waste water and sewerage

• Single body piece prevents leaks • Very low torque required for

opening and closing • PTFE seat and metal seat are

available for different application requirements

• Special characteristic with high precision control performance as well as strong cutting force and self-cleaning function.

• sizes available from 25mm to 500mm Nominal Bore with flanged and wafer style connections

• Temperatures from -20C to 425C

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30

Fixed Nozzle Variable Nozzle

De-Superheaters

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Safety Relief Valves

Safety relief valve VSEO, full lift spring loaded Liquid Thermal Expansion service

STEAM DE-SUPERHEATERING :

The most practical way of reducing the superheat value

of steam is by the direct addition of water. To achieve

temperature stability of the conditioned steam and

prevent thermal shock in downstream pipes, the cooling

water must be atomized. It is also necessary to have a

correct mix of superheated steam and cooling water.

Valves are available in 12 sizes as per API-526 Orifice sizes (EA-RA) and ANSI flanges covering set pressure ranging from 1.2 bar to 204 bar. A variety of materials are available to suit temperature range up to 550C

Modulating Control and On/Off Valves

Optimum Solution for High

Differential

Pressure & Critical Operating

Conditions

New Ecotrol

Cost Saving Benefits:

* Excellent performance in liquid and gas

application

• Extended lifetime due to double-side use by

reversing the seat ring

• Easy and fast assembly, maintenance without

any special tools

* Low cost performance ratio

* Prevention of leakage (5) and bypass leakage by

a limited compressive load acting on both

encapsulated gasket

* Multiple material options

* Optimal flow conditions by seat retaining cage (9)

* Optional: PTFE-soft seat sealing with back-up O-

Ring and metal-to-metal end stop

* Alternatively to the pipeless positioner mounting:

mounting acc. To DIN IEC 534 T6 (NAMUR)

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EDD

Smart Positioner Series 8400S Model 8400SHNW : Smart Positioner with Hall, weather proof Model 8400SPHE : Smart Positioner with POT, HART+ Position transmitter, EX-proof

Salient features • Precise position control • Robust design • Auto/manual calibration for full stroke • Low air consumption, which ensures payback of investment within few months • Can be used for linear, equal % characteristics irrespective of the plug characteristics • Split range feature for 2 valves • Alphanumeric LCD display • Diagnostic features • Local and remote monitoring over HART protocol • Can be used for air to open, air to close application irrespective of actuator type • Magnetic as well as potentiometric feedback option • Basic programming front fascia without configurator • Retro-fitting of existing positioner is possible • NAMUR tubeless connection for MF-series actuators. Requires less space as external pneumatic tubing is not required.

Advantages of HALL based positioner • Contact-less position feedback system • Free from backlash • No wear and tear of hall-feedback parts because of contact-less relative movement • Easy maintenance

GRPP

PVDF

PVC

PP

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Complete valve and actuator packages can be provided to

meet your flow requirements at the same time as being

corrosion and erosion resistant

Cast steel Pressure seal Bonnet

Cast Steel Bolted Bonnet

Gate Valve Isolation Service

34

Breather/Vacuum valves

35