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ABP Series

These shock absorbers are designed to limit excessive pressure variations caused by pump shut-offs or valve closings. ASME code fabrication, these vessels come with a heavy-duty bladder. It will eliminate any possible damage and destructive force that can cause wave shocks when the rate of flow changes abruptly. This water hammer may occur in a closed conduit flowing full when there is either a retardation or acceleration of the flow, such as with the change in opening of a valve in the line. For selection and sizing, contact our office or your local Calefactio representative.

Submittal &



• “U” stamped in accordance with the ASME Code for pressure vessels used to 150 psi (1034 kPa).
• Replaceable bladder.
• Red oxide primer finish.

Features ABP Series

Model Volume gal Volume L
ABP160 43 163
ABP250 66 2501
ABP400 106 401
ABP600 158 598
ABP1000 264 999
ABP1600 423 1601
ABP2000 528 1999