Model 1171 Back Pressure/ Relief Regulator

The Model 1171 is an inexpensive, brass & bronze back pressure/relief regulator designed to handle small to mid-capacity flow rates in general service. This unit is capable of controlling inlet pressure to a level between 5 and 200 psig (.34 and 13.8 Barg).


Designed to control a wide range of fluids includingindustrial gases, air, oil, steam and water.Available for cryogenic service. 

  • High Stability: High mass plug allows dampening of high frequency disturbances from inlet or outlet side of regulator.
  • Trim Removal: Easily removeable trim from body while in-line by removing screwed-on spring chamber.
  • Trim Selections: Four different trim combinations for me tal lic or composition seated de signs.