|
Axial refers to being parallel to the
centerline of the expansion joint. Compression is the axial
deflection which will shorten the bellows length. Often
confusion occurs because thermal expansion in the piping will cause
the expansion joint to be compressed. The specification for an
expansion joint should always state the movements as they affect the
expansion joint, and not as they are produced by the system.
Extension is the axial deflection which
stretches the expansion joints. Piping which is operating at
temperatures lower than ambient, such as in cryogenic systems, will
contract causing the expansion joint to stretch or experience
extension.
Sample
applications and piping arrangements |
Axial Deflection
FAX: (713) 731-8640