Expansion Joint Pipe Expansion Joint is isolated in the vacuum pump from another system to allow the thermal expansion and misalignment in the piping system. The Rubber expansion joint features a single or double-arched bellow constructed for the molded elastomeric. The function of Expansion Joints · Reduce pressure thrust and load · Reduce sound transmitted in the pipeline system · Directional movement · Compensate misalignment They typically come in three different applications: · Metal · Rubber · Braided Metal: Metal Expansion Joints are compensating elements of thermal and relative movements in the pipelines and compensator. ...