- No change in direction required
- Lowest pressure drop if no changes in direction
Expansion joints in Seismic and Settlement pipe systems move in two or three planes. Motions may be in two perpendicular directions or in all three planes. Torsion may also apply. Solutions include a single expansion joint for all motions or two expansion joints with a 90-degree elbow.
Single expansion joint solutions will induce pressure force and require main anchors
Two expansion joints with 90-degree elbow solutions do not induce pressure force and allow intermediate (non-pressure thrust) anchors