Angular expansion joints

Angular expansion joints are expansion joints that absorb angular movements in a plane They are equipped with joints that allow only angular movements.

HKS-Angular-Kompensator
HKS-Angularkompensator

Advantages of angular expansion joints

  • Medium to large expansion absorption possible
  • Relatively low fixed point load
  • Lower fixed point load than e.g. with axial expansion joints
  • Regular guides are sufficient
  • Pressure test possible even without fixed points

Disadvantages of angular expansion joints

  • Tricky design
  • Redirection of pipe work required
  • Greater space requirements (than e.g. with axial expansion joints)
  • Two or three expansion joints required for a compensation system
  • Higher unit costs (than e.g. with axial expansion joints)
  • No axial expansion possible
Angular expansion joint variants
Connection parts
  • Lateral expansion joints can be manufactured with weld ends, fixed flanges or swivel flanges or combinations thereof, depending on customer requirements
Single/Double bellows
  • Angular expansion joints can be equipped with single bellows or double bellows and central tube.
Tie rods/Swivel tensions
  • Angular expansion joints can be equipped with two opposing joints to allow angular movements of the expansion joint in a plane or equipped with two lots of two joints at 90° (universal joint) to enable angular movements of the expansion joint in two planes.

 

Simplified graphic representation of a expansion joint in angular movement