Summary

Molded type expansion joints incorporate the movement and vibration dampening capability of a spool joint into a compact and robust device.

Molded type expansion joints are available in several sizes and variations. The distinguishing features of the spherical joints are the shape of the body, floating flanges and the beaded seal. The more common configurations include the single sphere, double sphere and double sphere union. The double sphere is for applications requiring greater movement than a single sphere, while double sphere unions are installed in smaller-sized threaded pipe applications.