PRESSURE VESSEL DESIGN, MANUFACTURING AND OEM FABRICATION
From pressure & buffer vessel design to precision-engineered tanks, buffer vessels, skids, filters, strainers & silencers.

Pressure Vessel Design & Manufacturing
FlexEJ has a specialist fabrication team who design, engineer and manufacture pressure vessels at our UK fabrication plant. We specialise in custom pressure vessels with demanding expansion, pressure, technical and quality requirements and can manufacture vessels in a wide range of metals including Carbon Steel, Stainless Steel, chrome moly (CrMo) and Duplex:
Prefer to talk shop?
Just call us. Or we'll call you.
You can call the team on +44 (0) 1384 881188 or hit the get a quote button and we'll call you back
Pressure Vessel Design & Manufacture
FlexEJ designs to the commonly required vessel codes including - ASME VIII (not U stamp), EN13445 and PD5500. We are PED accredited meeting the requirements of module(s) D, D1, E1 & H. Alternatively, we offer build-to-print where the code calculation has been completed by others and the design envelope already exists.
Pressure Vessel Design & Engineering
In-house capability
PRESSURE VESSEL DESIGN & ENGINEERING
In house capability
FlexEJ uses PV Elite suite for calculations which integrates with our Solid Works for design and detailing. Material traceability and NDT are both managed through a specially developed database which integrates with our business system for instant reporting and indexing/retrieval of certification ready for inclusion in the manufacturing data book.
We have long experience of working with OEMs to design and build the pressure boundary for specialist internals such as filters, strainers, de-misters, separators, heaters and silencers.
Alternatively, FlexEJ offers build-to-print where the code calculation has been completed by others and the design envelope exists or we can take concept drawings forward to full manufacturing designs.
Filters, Strainers, Silencers, Flares.
Your manufacturing partner
FILTERS, STRAINERS, SILENCERS, FLARES.
Pressure Boundary for OEMs
FlexEJ is an experience manufacturing partner for OEMs requiring pressure boundary fabrication and final product assembly.
Filters, strainers, de-misters, separators, heaters, silencers, flare tips... the list is extensive.
We understand the requirements of OEMs and have developed long lasting partnerships with major manufacturers. From simple build to print through to complete pressure boundary design and the final product we will be pleased to work with you.
Pressure Vessel Manufacture
Complex, high specification welcome
PRESSURE VESSEL MANUFACTURE
Typically to 3m diameter
FlexEJ specialises in the manufacture of small to medium pressure vessels. Backed up by our team of engineers and support office staff, we are known for high quality work, with excellent manufacturing documentation.
Typical diameters up to 3,000mm
Typical weights up to 15,000Kg.
Typical lengths up to 12,000mm
Typical wall thicknesses from 1mm to 50mm
We regularly fabricate pressure vessels from a wide range of metals, for example:
Stainless Steel 316/L, 304/L
Carbon Steels A516, A105
Chrome Moly (CrMo)
Alloy 625, 825
All our welders are on site in our own factory in the UK.
Skids & Packages
Vessel Packaging
SKIDS & PACKAGES
Integration with your supply
FlexEJ offers complete vessel packages with skid, piping and your free issue items as required. We are highly experienced in meeting complex requirements for documentation, in process NDT and tests on projects.
We have provided vessel packages as a long term manufacturing partner to an OEM, whatever your needs please get in contact.
Can't see what you want? Need help?
Call us. Or use Live Chat.
For instant advice. We can custom-design and engineer almost any expansion joint you need for delivery in the UK or worldwide. Call our expert team on +44 (0) 1384 881188. Or email us sales@flexej.co.uk
Who can you talk to?
Try our sales and customer service team on 01384 881188
They don't bite. And they know what they're talking about. Call the team any time from 8:30am to 3:30pm weekdays, 12:30pm Fridays or use LIVE CHAT if you would prefer a quick text answer. For more complex queries, send us any pro-forma documentation using the get a quote form below or email us sales@flexej.co.uk.
Can't quite find the right bellow?
Try the FlexEJ Bellows Finder
Or call our expert team on +44 (0) 1384 881188
Frequently Asked Questions
Please visit our full FAQ page to see all our frequently asked questions.
Need a detailed quote?
Get A Quote. On us.
We will provide full technical details together with, pricing and shipping timescales. For more complex engineered quotes, preliminary sketches and calculations will be available.
Got a quick question?
Use Live Chat. Or call us.
For instant advice use the Live Chat link to message one of the sales team. Or call them direct on +44 (0) 1384 881188
Get A Quote
Please complete the short form here and we'll get back to you within 24hrs Monday to Friday (quicker if marked urgent).
Alternatively, you can also call our expert team directly on +44 (0) 1384 881 118 from 8:30AM to 4:30PM weekdays (12:30PM Fridays), who will be only too pleased to talk through your requirements and technical queries over the phone.
Visitors are also welcome Monday to Friday although please get in touch beforehand to let us know you're coming.

Industry experience
FLEXEJ Ltd was formed in 2002 by two professional engineers who brought together an already highly respected design capability with business and commercial skills gained in large multinational companies.- Our focus has always been on application and design – helping our customers find the best value solution.
- We have a strong engineering and manufacturing team with experience in petrochemicals, refining, nuclear, desalination though to HVAC.
- The team is also very familiar with meeting complex requirements for documentation, in process NDT and test on projects. We have supplied many large end-users such as EDF, Exxon, Shell, Reliance & QatarGas working with major contractors such as JGC, Foster Wheeler & Technip.

