Bellows in stock, on line
From stock, next day delivery. Also from our web shop.

FlexEJ Value HVAC Rubber Bellows - Union
FlexEJ's Value Union rubber bellows are ideal for smaller diameter applications at lower temperatures and pressures where WRAS drinking water approval is not required. Length of 200mm (240mm at DN65) all with BSP Unions, DN20 to DN65:

HVAC Rubber Bellows - Union
What is a FlexEJ Value HVAC rubber Bellows?
Value choice for lower temperatures...
- Materials
EPDM with galvanised cast iron unions. - Application
Water: LT heating, waste, sanitary, chilled. - Rating
PN10 at +20°C and PN06 at +95°C. BSP Unions. - Approvals
Not approved for drinking water.
HVAC Union End rubber bellows
Size | Length | Pressure Rating | Movement | In Shop |
---|---|---|---|---|
DN020-¾" | 200mm | 10 Barg @ 20 ºC to 6 Barg @ 95 ºC | Axial +22/- 6 mm, Lateral +/- 22 mm, Angular +/- 45º | Yes |
DN025-1" | 200mm | 10 Barg @ 20 ºC to 6 Barg @ 95 ºC | Axial +22/- 6 mm, Lateral +/- 22 mm, Angular +/- 45º | Yes |
DN032-1¼" | 200mm | 10 Barg @ 20 ºC to 6 Barg @ 95 ºC | Axial +22/- 6 mm, Lateral +/- 22 mm, Angular +/- 45º | Yes |
DN040-1½" | 200mm | 10 Barg @ 20 ºC to 6 Barg @ 95 ºC | Axial +22/- 6 mm, Lateral +/- 22 mm, Angular +/- 45º | Yes |
DN050-2" | 200mm | 10 Barg @ 20 ºC to 6 Barg @ 95 ºC | Axial +22/- 6 mm, Lateral +/- 22 mm, Angular +/- 45º | Yes |
DN065-2½" | 240mm | 10 Barg @ 20 ºC to 6 Barg @ 95 ºC | Axial +22/- 6 mm, Lateral +/- 22 mm, Angular +/- 45º | Yes |
DN080-3" | 240mm | 10 Barg @ 20 ºC to 6 Barg @ 95 ºC | Axial +22/- 6 mm, Lateral +/- 22 mm, Angular +/- 45º | Yes |
How to select an HVAC rubber bellows






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
FlexEJ's HVAC Union End Rubber Bellows
FlexEJ's HVAC Union End rubber bellows offer excellent value for many small bore building services applications:
BSP Unions | EPDM rubber lining |
All metal parts galvanised | In stock for quick delivery |
Twin sphere design | Swivel connections |

Specifications
All sizes available from the web shop...
For detailed specifications please see our catalogue.
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
HVAC Union End rubber bellows comparison chart
Is the HVAC Union End rubber bellows the best option for your application? Two potential alternatives to consider:
WRAS approved WRAS approved bellows
Is this bellow approved for use in all UK public mains water supplies?
Potable water Potable water
Is this bellow approved for water systems used for drinking and food preparation?
Rating barg/°C Pressure & temperature
What is the required pressure rating (in barg) compared to temperature rating for this bellow?
Not sure what flange spec you need?
Use the FlexEJ Flange Finder to find out
FlexEJ stock a full range of specs and types for our bellows. Or call our expert team on +44 (0) 1384 881188.
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.

