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CashcoModel 1164 -Back Pressure Relief Regulator

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The Model 1164 is a relief regulator suitable as a back pressure or bypass requlator 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).

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Inlet Design Pressure

  • Up to 225 psig (15.5 Barg)

Outlet Pressure

  • 5 psig (0.34 Barg) to 150 psig (10.3 Barg)

Line Sizes

  • 3/4" (DN20)
  • 1" (DN25)
  • 1-1/2" (DN40)
  • 2" (DN50)

End Connections

  • NPT female
  • Material Combinations: Body / Spring Chamber
  • DI/CI,
  • CS/CS,
  • CS/CI,
  • BRZ/BRZ*
  • BRZ/CI *

CI = Cast grey iron

DI = Ductile iron

CS = Cast carbon steel

BRZ = Cast bronze

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