H Series Compensator

Designed to absorb straight axial compression and extension. Used in building riser ssytems to compensate for thermal expansion and concrete shrinkage, they can be installed in horizontal piping as well as vertical.

Proper guiding and anchoring are critical!


Available Styles and Options:

  • MMT (male thread), HWE (weld end) and FLG (Flanged)
  • 2″ of compression, 1/2″ extension (2-1/2″ total stroke), steel threaded, flanged or welded ends
  • 3/4 to 4″ pipe sizes. H Series Compensators are tested to a pressure of 250 psi for the recommended maximum operating pressure of 175 psi. Maximum temperature: 750° F.
  • The H Series, designed with pressure external to bellows, is extremely compact to save space. Bellows head is slotted to ride on an anti-torque rail.
  • Vertical or Horizontal Installation. Requires no maintenance.
  • All-metal construction includes a stainless steel bellows and high quality carbon steel housings and fittings. Welded construction throughout…with traveling nipple tack-welded with clip to insure proper installation. Standard with male thread ends and is also available with weld or flanged ends.