HVAC Long Axial Metal Bellows
EJMA calculated bellows, PN16 flanges, liner - designed for large axial extension and compression movements
HVACLong Axial
HVACLong Axial
HVACLong Axial
HVACLong Axial
HVACLong Axial
HVACLong Axial
HVACLong Axial
HVACLong Axial
HVACLong Axial
HVACLong Axial
Axial Metal Bellows
What is an HVAC Long Axial Metal Bellow?
Longer bellows provide greater movement...
- Materials
Stainless steel 316 bellows with carbon steel PN16 flanges. - Application
Heating water and most water services, not suitable for drinking water. - Rating
16 Barg @ 180°C. - Web Shop
Available online with next day delivery from our web shop.
How to specify a metal expansion joint
We design and manufacture metal expansion joints so you are not restricted to our range of standard products, some of which are available in our web shop. For simpler applications a standard product may be entirely suitable but if not we will design to meet your exact requirements.
Metal bellows have a defined fatigue life based on movement cycles. Understanding the movements, if they are concurrent or not and the realistic number of times the movements can occur is fundamental to metal bellows design.
Metal bellows work well up to around 500ºC, above that we use insulation to control the actual bellows metal temperature if the media is above this temperature. Pressure and temperature must be known to select a metal expansion joint.
The most common material used for metal bellows is Stainless Steel - 304, 321, 316 - and for more demanding applications Nickel Alloys - 625, 800, 825. Corrosion is the most likely failure mode for the bellows itself so the correct material selection is important.
Our standard ranges have set lengths for each diameter / movement range but we can design to meet your exact requirements. Making the bellows longer will increase the available movement. Most commonly a flange, we can provide to any specification, or pipe weld ends. Our HVAC standard product is available with BSP Union ends and Copper Pipe ends. If you are uncertain about what flange type you already have installed our Flange Finder will help you identify it.
Call our expert team on +44 (0) 1384 881188 or email us at sales@flexej.co.uk or use Live Chat on this web site - we are here to help, please get in touch.
An overview of FlexEJ's HVAC Long Axial Metal Bellows
FlexEJ's HVAC Long Axial Metal Bellows for water and steam applications
| 316 stainless steel bellows | Stainless steel liner |
| PN16 carbon steel flanges | Rated 16 Barg @ 180°C |
| Minimum length design | EJMA calculated bellows |
Specifications
All sizes available from our web shop
For ratings and dimensions please see our catalogue or range tab above.
HVAC flanged axial bellows comparison chart
Is this the best flanged metal bellow for your application? Three potential alternatives to consider:
Stainless steel bellow 
Bellows Material and Design
Is the bellows Stainless Steel and calculated to EJMA?
Flow Liner Flow Liner
Is a Flow Liner included?
Any flange / weld end Any Flange or Weld End
Is any common flange type or pipe weld end available?
Range of lengths Range of lengths
Can an overall length greater than minimum be specified?
Rating barg/°C
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.
