Only by increasing the number of corrugations in the bellows, a larger amount of thermal expansion can be compensated by the axial expansion joint, but this increases the possibility of torsion. The inner sleeve can be used to reduce the torsion, but at the same time they also reduce the displacement capacity of the expansion joint. Ayvaz's external compression expansion joints provide the most suitable solution for this situation.

Compensation displacement
X-axis - compressed axial expansion joint changes the flow direction and transmits pressure to the external bellows, so that the resistance of the externally pressurized bellows to high pressure and torsion increases. This sturdy construction safely compensates for large movements.

X-axis - Advantages of compressed axial expansion joints
Easy to compensate for large telescopic displacement
Reducing the number of axial expansion joints, saving time and cost
Use the smallest area
Eliminate axial errors and increase system security
Use an internal guide ring in its design to provide a highly stable structure for the connection
 
Structure
Bellows material: Stainless steel AISI 321 (optional 304, 316L, 316TI, 309)
Pipe material: Standard carbon steel St.37.2, materials can be customized according to customer requirements
Connection type: fixed and floating flange, end welding
Flange material: Standard carbon steel St.37.2, materials can be customized according to customer requirements
Inner sleeve: AISI 321 (optional 304, 316L, 316TI, 309) available upon request

Working conditions
Working temperature: -80C°/+600C°
Working pressure: Different pressure levels can be customized PN 2,5/6/16/25/40/64
Nominal diameter: DN 25 (1”)- DN 1500 (60”)

Product Manual
Click here to download External Pressure Expansion Joints Manual
Download Manual (PDF)