Pressure-balanced expansion joints

Pressure-balanced expansion joints are utilized where the pressure thrust is too large to be resisted by the main anchors, or the attached equipment. This type of expansion joint is designed to absorb axial, lateral, and angular movement while at the same time restraining the pressure thrust force. American BOA manufactures pressure-balanced expansion joints in a variety of styles such as externally pressurized-pressure-balanced, in-line pressure balanced, and pressure-balanced elbows.