Controlled-Flexing expansion joints combine corrugated metal bellows with mated neck rings and bellows equalizing rings. Corrugation movements are equalized, even at high pressures and large axial movements. Both 150# and 300# pressure styles are available. Internal liners can be added and external shroud covers can be installed for safety. Ends include fixed or vanstone flanges and weld end style. Series MEJ-CF Controlled-Flexing Expansion Joints are manufactured in sizes from 3" to 24" depending on bellows pressure series.

Global-Flex Mfg. EJEP Externally Pressurized Expansion Joints are a packless, maintenance free product designed for use in straight runs of pipe to accommodate large amounts of thermal expansion. Within a protective enclosure, external pressure is applied to the bellows via a gap between the internal flange and housing. This pressure keeps the bellows stable. EP Series expansion joints are available in 150# and 300# designs with either flanged or weld ends. Both single and dual bellows are available. Drain ports can be added for steam service. Sizes range from 2" to 24" diameter.

Designed to control axial movements in small diameter piping systems. Series CM/CMS Expansion Compensators utilize the external pressurization principal to eliminate bellows squirm. Styles are available for connection to steel piping or copper tubing. Standard end configurations are threaded, copper sweat, or flanged. Sizes range from 3/4" to 4" diameter.