Model 1164 Back Pressure/ Relief Regulator

The Model 1164 is a relief regulator suitable as a back pressure or bypass regulator for controlling inlet pressure between 5 and 150 psig (0.34–10.3 Barg). Available in sizes 3/4", 1", 1-1/2" and 2" (DN20, 25, 40 and 50).


Designed for controlling a wide range of fluids including air, inert gases, chemicals, water, fuel oil and steam.

  • Versatile: Three body materials and six trim material combinations allow compatibility with many fluids.
  • High Capacity: A large orifice and diaphragm pro vide sensitivity with high capacity. 
  • Tight Shut Off: A TFE composition seat is avail able.
  • Sensitivity: A large diaphragm area plus no guiding friction assures positive reaction to the slightest change in pressure.