Axial expansion joints are expansion joints that absorb mainly longitudinal movements axially along a straight section of pipe.
Advantages of axial expansion joints
- Simple means of compensation
- Smaller space requirements
- No alteration of flow movement
- Movement possible in any direction
- No redirection of pipe work required
- Low unit costs
Disadvantages of axial expansion joints
- High axial forces at higher pressures
- Strong fixed points and good axial pipe guides required
- Small and medium movement absorption
- For large expansion movements several axial expansion joints are required
- On long stretches many fixed points and pipe guides are required
Axial expansion joint variants | |
---|---|
Connection parts |
|
Guide tubes |
|
Outer protection tube |
|
One or two bellows |
|