Process Brochure@15Feb05 by JL

PILOT VALVES FOR PNEUMATIC ACTUATORS

The process industry has different sub-segments with specific demands such as for:? oil & gas

? (petro)chemical

? pharmaceutical

? power generation ? water & beverage ? food

? pulp & paper

Pilot valves are used to activate pneumatic actuators operating as the driving force on process valves in both single-acting and double-acting executions.

Since the pilot valve can restrict the flow, the actuator and process valve response time performances are strongly influenced by the pilot valve’s flow capacity.

Quality and reliability of process valves are of great importance for the safety and output of the production.

Pilot valves are often installed in environments with low and/or high ambient temperatures, corrosive influences and high mechanical loads.

Consequently, they have to be designed for long-term high

reliability under harsh conditions.

ASCO/JOUCOMATIC, the industry leader

offering the widest variety of solenoid valves in the world

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PILOT VALVES FOR THE PROCESS INDUSTRY

To fulfil the actuators’and the environment

requirements, the selection of the pilot valve has to be done carefully

regarding:

To give the best solution for your application, ASCO/JOUCOMATIC provides unique pilot valve solutions including:

? intrinsic safety ? low power

? direct Namur mount

? safety shutdown systems.

Pilot valves which will operate at extremely low power levels and interface with all major protocols including ASinterface, DeviceNet, Profibus-PA and Foundation Fieldbus.

Pilot valves are available in a large selection of:

? 3-, 4- and 5-way direct-acting or pilot operated/pressure assisted versions ? brass, stainless steel, aluminium and plastic valves ? sealing materials in a wide range of resilients

? ATEX and other solenoid operator enclosures are available to operate from -50°C to +100°C in normal or explosive environments.

Different types of pneumatic actuators:

rack & pinion, scotch yoke, linear ...

? functional safety ? power consumption and electrical

connection method ? communication through fieldbus and remote I/O

? environment:

temperature, humidity,aggressive atmosphere;if applicable, explosion-proof zone and protection method

? mounting interface ? flow capacity ? function

? choice between

direct-acting or pilot operated valve

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pressure connection Long service life 4

PILOT OPERATED SOLENOID VALVES THREADED AND “NAMUR STYLE”

Product series 551, 552, 553

To reduce the total cost of installation and to make the solenoids more reli-able and suitable for fieldbus control,there is a strong trend towards lower power consumption.

Electrical power level

A unique range of 1/4”, 3/8”, 1/2” pilot operated solenoid valves for your pneumatic actuator applications.

? Small size and high flow rate up to 3800 l/min ? Threaded and “NAMUR style”? Intrinsic safety version ? Fieldbus compatible

? Suitable for hazardous areas zones 0, 1, 2, 21, 22.

Our large range of solenoid operators, electrical power levels, valve materials, pilot interfaces, 3/2, 5/2 mono/bistable functions enable these valves to meet your needs for safety and low power consumption.

Threaded versions and “NAMUR STYLE” interface are in accordance with

CEN/TC69/WG1/SG10, VDI/VDE3845 (NAMUR) standards.

Large range of solenoids

Various valve body materials

EEx m EEx d EEx em EEx ia

aluminium body EEx em stainless steel EEx ia brass body

EEx ia CNOMO pilot

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3/

2 DIRECT ACTING SOLENOID VALVES UNIVERSAL OPERATION

The 1/4” direct acting solenoid valves Series 327 are recommended for pilot applications with high flow , wide pressure range and no minimum operating pressure .The original balanced poppet construction combines low friction “Delta” seal and low power consumption.

The original balanced poppet construction gives an equal pressure field all around the poppet and no pressure resis-tance during valve opening.This way the coil compensates only seal friction.

1 Energy saving: reduced power consumption thanks to low friction “Delta” seal

2 Reliability: balanced poppet technology assures resistance against pressure surges

3 Exceptional service life: Teflon rider and

desulphurised seal eliminate sticking on valve seat

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VALVE ISLANDS

Besides standard solutions, we have been developing customised islands for specific requirements for many years. For example, islands with intrinsically safe piezo pilot, isolation valves which act on the pneumatic circuit during operation,additional input/output modules, specific mounting plates, pressure switches ...

IP 20/IP 65 valve islands installed into a cabinet or directly into plant location.

Due to their increasing performances: flow versus size, easy installation, modular configuration, IP 65, I/O modules, spool valve islands are becoming more and more popular for process control applications.

In order to answer the different needs, ASCO/

OUCOMATIC has developed different island concepts.

Mega

900 l/min, ANR

3/2, 2x 3/2, 5/2, 5/3 spool valves Instant fittings

Individual connector IP 20/IP 65

Multipol, Profibus-DP

V.C.S. Valve Connection System

Up to 16 monostable or bistable spool valves Air operated version

Monobloc subbase concept

Generation C

175 l/min, 600 l/min, 1050 l/min ANR 3/2, 2x 3/2, 5/2, 5/3 spool valves

M5, G 1/8“, G 1/4“ or instant fittings ISO 1, 2 islands

1400 l/min, 2800 l/min ANR

5/2, 5/3 W1 W2 W3 spool valves G 1/4“, G 1/2“

ISO 01 (VDMA G01) ISO 02 (VDMA G02) islands 950 l/min, 500 l/min ANR

FIELDBUS COMMUNICATION

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FUNCTIONAL SAFETY

Reliability is a critical factor in control and safety systems.

Essential is our compliance with functional safety IEC 61508 and 61511 standards .ASCO/JOUCOMATIC pilot valves can easily perform millions of cycles, meaning in most cases they can outlive the rest of the customer’s process with zero maintenance. At the other end,pilot valves fitted to safety shut-off valves may operate only a handful of times during the plant life time. However, they must operate perfectly when required.

Control systems

systems that control the installation under normal conditions.Safety systems

systems that bring the installation into a safe state in case of

an emergency condition.

To determine whether a safety process loop fulfils a certain level, a calculation should be made using for each component in the loop the PFD (Probability of Failure on Demand) factors.

ISO 9000 companies including 20 manu-facturing facilities.

approvals:

The ability to serve various markets is further reflected in the whole gamut of agency approvals

that

ASCO/JOUCOMATIC

has gained.

organisation:

Global network with over 1000 sales of-fices and distributors.We have a thorough understanding of valves and their ap-plications and are very much attuned to what is happening in all markets worldwide.

F o r m : A 6 (02/04)

AK7, SIL 4 solenoid valves