Socla Valves
& Actuators

Butterfly Valves for water distribution and supply - WRAS, Veritas & Lloyds approved.


Suitable media are water treatment and most fluids and gasses for general services, refrigeration, HVAC etc.


Industrial applications: Metallurgical, mining, paper-making, shipbuilding, nuclear, environmental, and mechanical, food industry


Sylax sizes stocked:
50mm - 300mm EPDM and Nitrile NBR liners, Lever Operated, Other Operators available at short notice


For special applications, especially for particularly difficult media, contact our office .


Multi voltage actuators in stock with options of modulation and battery backup to suit your requirements.


Armstrong offers the following utility system and service solutions:


Steam and Condensate Solutions – Steam trapping and steam tracing equipment, testing and monitoring, strainers, air vents, liquid drainers and condensate recovery equipment. Armstrong also provides a bespoke “Steam-Star” survey, including on-site visits and reports.


Hot Water Solutions – Hot water heaters, balancing valves, radiator products, mixing valves and hose stations.


Heat Transfer Solutions – Heating and cooling coils, unit heaters and tank heaters.


Humidification Solutions – Conditioned steam humidifiers, gas fired humidifiers, electric steam humidifiers and fogging systems.


Pressure/Temperature Control Solutions – Pressure reducing valves and temperature regulators

Stocked items include: Airvents and Liquid drainers.


Contact us for sizes and availability.


Zubi Valves

Process Exchange Ltd are the sole importers into the UK of Zubi Knife Gate Valves


Válvulas Zubi S.L has been manufacturing valves since 1979, focusing its activities at first on the exclusive manufacture of diaphragm valves, later expanding their range to manufacture knife gate- and check valves. Their wide range of products includes square fabricated valves as well as many customised variations made to order.


Seal rings and packings on the valves are specified to suit the application, media, concentration and temperature. Used in applications like powders, suspended solids and fluids. These valves are suitable in under hopper applications where the media is allowed to fall away from the seat area.


The ZUBi S200 Uni- and Bi-directional Valves are stocked as standard.
We stock sizes 50-400mm in Cast Iron and Stainless Steel, PN10/16 Flanges, Handwheel and Cylinder operated ISO top.


For more detailed product information, please visit

General Valves

General Purpose Valves - At Process Exchange Ltd we can supply a complete range of valves including ball, gate, globe and check valves for water, oil, air and gas service available from stock. Materials include cast iron, brass, bronze and stainless steel. All end connections catered for from screwed BSP and NPT, compression ended, Imperial, DIN and ASA flanged. Pressure ratings to 6000psi can be supplied.


Starline and Pekos - Petrochemical ball valves in cast iron, steel, stainless steel and exotic alloys. All end connections can be supplied including welded pups. Ratings from Class 150 to Class 2500. All valves are fire safe to BS6755 part 2 standard and anti-static in accordance with BS5351. DIN 54009 3.1b certificated as standard.

Actuated versions supplied with all accessories. 


Bellows Sealed Globe Valves - Process Exchange Ltd are specialists for bellows sealed globe valves from cast iron to exotic alloys. End connections available PN10 to PN64 and equivalent Imperial and ASA ratings. The valves offer 'zero leakage' so are ideal for thermal oil, steam and process fluids where spillage increases costs or causes harm.

Full actuated packages available.

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For any enquiries or questions 

please call:+44 (0)1892 724333


or complete the following form:

Head Office

Process Exchange Ltd

Pullens Farm

Lamberhurst Road



TN12 8ED

Opening Hours

Mon - Thu               08:00 - 17:00

Fri                           08:00 - 16:30


John Swain - Director

John deals with the major contracts and some day to day sales.

With 40 years experience within Valve and Process industries there are very few applications he hasn't seen.


Some may find his valve-ramblings boring, everyone in the office however, finds it riviting (he is the boss after all)


Direct Line: 01892 724452

Dee Swain - Director

Dee is also responsible for the accounts and finance - having been involved in general engineering for over 35 years and ran her own business - she is certainly not just a pretty face.


"Can't pay, we'll take it away" remains her all time favourite show.


Dee keeps the Naughty Board updated.


Direct line: 01892 724336

Andy Williams - Office Manager

Andy deals with contracts and runs the office and with close to 40 years' experience in the industry has an encyclopedic knowledge of products and applications.


He lives off coffee and the odd Corned Beef and pickle sandwiches.


Although Andy is friendly, this is not to be confused with being charitable - just ask his wife who still can't confirm that he actually owns a wallet


Direct Line: 01892 724385

Gary Sears - Sales Manager

Based in Norfolk, Gary is our front line Sales Manager dealing directly with stockists, re-sellers and end users, focussing largely on all areas north of the Thames.


Gary is an avid Canaries (Norwich) fan and often goes Snooker Loopy.


His background as a DJ & Entertainer makes him key to our office parties.


Mobile Tel: 07921 211948

Adrian Bird - General Manager

Apart from dealing with the South East area sales, Adrian is also the "go-to" guy for all things ZUBI.

He is a magnificent specimen of the Alpha male and enjoys his food - no one has been able to explain the concept of Vegetarianism to him, yet.

Direct Line: 01892 724457

Melvyn Giles - Warehouse Supervisor

Mel is responsible for goods in and goods out, Stock and the general tidiness of the warehouse.

Over weekends you will find Mel next to various sports grounds supporting his grandchildren - when they become professional and start supporting their granddad Mel will be... "out of here"

Joe Matthews - Assembly & Sales Technician

Joe is the latest addition to the ProEx family – he mainly looks after the workshop and all the builds but also helps out with sales enquiries. Having spent a couple of years “down-under”, Joe brings some international flair as he can speak Australian fluently.


Joe can reach things on the highest shelf (without a ladder) and has been known to enter the odd marathon… in his head. His all time favourite seat is Nitrile.

Adéle Bird - Systems, Quality & Marketing

Adéle is responsible for ISO9001 Quality, internal systems, Health and Safety and general geeky computer stuff.

She has a background in Sales and Marketing and can therefor lie with a straight face

Direct Line: 01892 724360

Edward (Eddie) Bird - Security Officer

Be prepared to get a thorough once over if you come to the office for a visit - but once you're in, you'll have friend for life.

What Eddie lacks in brains he makes up for in brawn (and ears)

Eddie has a particular penchant for bags filled with shredding and taking Adéle for long walks in the country side.

Charles (Charlie) Bird - Trainee Security Officer

Charlie has recently completed his 3 months probation period and has now been sworn in as a proud ProEx employee.

His ears tell a tale of a confused fusion of breeds (Frenchie and Daschund) not knowing whether they want to be up or down. Charlie currently believes that his main KPI is the effective removal of any stuffing in beds and toys. Other than that he enjoys following Eddie & Adéle everywhere and welcomes adoration from anyone who has 5 minutes to spare. 

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Established in 2002, Process Exchange has grown steadily to become a leading company in process valve engineering.

Based in the South East of England, our team boast years of experience in the industry – coupled with access to a vast range of quality products which makes Process Exchange an obvious choice to source and supply valves, actuators and controls to suit your requirements.


Sole importers of Valvulas Zubi knife gate valves, VYC safety valves and specialists in Armstrong steam traps & Socla Butterfly and Check valves.


Supplying process equipment to varied industries such as petro-chemical, agricultural, water and waste, food and breweries, pharmaceutical, hospitals, paper making and many more.


We also stock a variety of valves and actuators, listed below. Please give us a call to discuss any requirements and availability.

See what we have been up to: 

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