Cashco AB8-1S17-14000000B 1164-1-1 Back Pressure Relief Regulator

Cashco AB8-1S17-14000000B 1164-1-1 Back Pressure Regulator is a 2-inch NPT modulating regulator designed to maintain upstream pressure in liquid and gas piping. Manufactured by Cashco, this unit belongs to the Model 1164 family and uses 2" NPT connections for inlet and outlet, with a set-pressure rating up to 150 psi, suitable for use as a back pressure regulator or bypass valve in process lines. The AB8-1S17-14000000B configuration identifies the specific trim and options for this regulator, enabling precise control in applications such as pump bypass and upstream pressure management. Important safety note: this device is a regulator, not a code-compliant safety relief valve, and must not be used as a substitute for a pressure-relief device where overpressure protection is required. The Model 1164 is described as a modulating back pressure regulator capable of controlling upstream pressure, with sizes from 3/4" to 2" and service for liquids, gases, or steam depending on trim and materials.