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Externally Pressurized expansion joints
A tougher, safer choice for your mission-critical operations.
In an externally pressurised expansion joint, media flow is on the external surface of the bellows. The internal surface of the pipeline itself works as a liner to reduce turbulence, making it much more effective in absorbing large axial movements and eliminating column instability. In addition, its convolution is protected from any damages during transportation, thus making the bellow less likely to leak or fail.
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Advantages of Externally Pressurized Expansion Joints
Great for underground pipelines or areas with large axial movements
Significantly reduced internal pressure and improved column instability
Enhanced bellow protection for a more streamlined flow
Easy to insulate
Minimal pressure losses
Slow medium escape in the event of failure, making repair work much safer
Applications of Externally Pressurized Expansion Joints
- Hot & Cold Water
- Superheated water
- Steam and condensate pipelines
- Industrial Applications
- HVAC lines
- In large plants with thermal equilibrium and mechanical expansion
- Geothermal plants
- Integrated city district heating
- The widest application area is underground pipe lines
Design Values
DN
25 – 1000
Bellows Material
304, 316, 321
Balance Material
Carbon Steel, Stainless Steel
Design Pressure
40 barg
Design Temperature
400°C
Please consult with our technical department for different working conditions and design parameters.
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