· Simple design and relatively low cost
· Suitable for a low lateral spring rate and high lateral movement
· Use of tie rods can resist pressure thrust.
· Requires main and directional anchors and guide
Types of Movement
· Axial movement
· Large lateral deflection
· Angular rotation
This expansion joint has two bellows sections connected by a center pipe section. This design allows for large amounts of lateral deflection. The universal can also allow for axial and angular movements in addition to the lateral movement. This expansion joint does not come with the hardware to resist pressure thrust. Like the single unrestrained expansion joint the universal expansion joint must be properly anchored and supported.
Universal unrestrained expansion joint is appropriate for any application where pressure thrust can be handled by external anchorage. The universal unrestrained expansion joint is appropriate for large lateral offset requirements wherever a low lateral offset spring rates is required.