Cashco AB8-1S17-14000000B Pressure Reducing Regulator

Cashco AB8-1S17-14000000B is a 1164-series back pressure regulator from Cashco, Inc., configured with 1-1/2" NPT ports and an S1 trim. The 1164 family is described in Cashco catalogs as a compact back pressure regulator suitable for light- to medium-capacity service in steam, air, oil, water, and many chemicals and gases, where upstream pressure is controlled by venting to atmosphere or a vent line when pressure rises downstream of the regulator. This AB8 variant carries the 70-150 psi service range, indicating the typical upstream pressure window in which this configuration operates, and is identified by the AB8-1S17-14000000B part number. In common installations, back pressure regulators like the 1164 help protect equipment and instrumentation from pressure fluctuations on the upstream side of a process line, making them suitable for test manifolds, header protection, and general utility service in industrial facilities. The specified connections and trim designation (1-1/2" NPT, S1) relate to the body's inlet/outlet threading and the seating/valve plug arrangement, ensuring compatibility with standard piping and predictable outlet behavior within the stated range.