In-Line Pressure Balanced Rectangular Expansion Joint
A pressure balanced expansion joint accommodates axial and lateral movements and counteracts the bellows pressure thrust. An additional bellows is incorporated into the unit and is subject to the line pressure to generate a force equal and opposite to that on the main bellows. Tying these bellows together neutralizes the pressure load on the unit.
- Does not transfer the thrust caused by the internal pressure to the pipes or adjacent equipment
- Absorbs axial and lateral movements
- Eliminates change in pressure
- No main anchors required
- Pressure forces remain in balance