• PR1 Pressure Regulator, Single Stage, Monel, 0-50 PSIG PR1-4A11HHE114

GO Regulator PR1-4A11HHE114 PR1 Pressure Regulator, Single Stage, Monel, 0-50 PSIG

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Shipping Weight:
3.00 LBS


The PR-1 Series is a versatile pressure reducing regulator designed to fulfill a wide range of needs in instrumentation sample systems and other applications such as semiconductor processing gases. Many features of the PR-1 make it ideal for a wide range of applications controlling pressures at low to moderate flows in gas or liquid service. Stainless steel caps and adjusting screws prevent atmospheric corrosion and maintain appearance. Enhanced internal body surface finish of better than 25 Ra plus electropolishing allows easier cleaning and potentially less particle contamination in the flow stream.

Three different seat materials, three alternate orifice sizes and 7 pressure control ranges with INCONEL® diaphragms offer the user a wide spectrum of capabilities for pressure control with inlet pressures up to 6000 PSIG and standard operating temperatures up to 500° F (260° C).

Features and Specifications

  • Gas or liquid service
  • 316L Stainless Steel, INCONEL®, PTFE, and Tefzel® (or optional main seat material choice) only in flow stream
  • Electropolished 316L body with better than 25 Ra diaphragm cavity surface finish
  • Stainless steel cap with SS adjusting screw
  • Inlet pressures of up to 6000 PSI
  • Adjustable outlet pressure ranges of 0-10, 0-25, 0-50, 0-100, 0-250, 0-500, and 0-750 PSIG
  • Operating temperatures of -40° F up to +500° F (-40° C up to +260° C)
  • 20 micron filters
  • Bubble-tight shutoff under most conditions
  • Cv flow coefficients 0.025, 0.06, 0.20, and 0.50 (0.06 standard)


  • Wetted materials of construction: MONEL®, HASTELLOY®, Titanium and 6MO
  • Panel mount (1 ⅜" mounting hole)
  • Special diaphragm assembly for water service
  • SS inlet pressure gauges
  • SS outlet pressure gauges
  • Base-mounting brackets
  • Captured vent
  • Self-relieving

Product Specifications

Body MaterialMonel
Port ConfigurationA Standard
Process Port Type¼" FNPT (¼" FNPT gauge ports), Standard
Surface Finish of Diaphragm Cavity< 25 Ra, Standard
Seat MaterialPCTFE (formerly Kel-F 81)
Flow Coefficient (Cv)0.5
Outlet Range0-50 PSIG
Diaphragm TypeStandard Diaphragm
Diaphragm Facing/Backing MaterialPTFE/Metal Backing, Standard
Cap AssemblyPanel Mount, Stainless Steel

Literature & Docs