Masoneilan* 173 Series Spring Loaded, Direct-Operated Back-Pressure Regulator

General features:
  • Flow to open design
  • Available with ISA Face to face dimensions
  • From 5 to 9 different CV’s for each size to assure high accuracy in regulation
  • Metal or Sot Seat
  • Internal pressure sensing (external on request)
  • Wide range of actuators according to the requested regulation range
  • Elastomeric or metal diaphragms
  • Fully sealed construction available (suitable for dangerous medium; ATEX compliant)
  • Description

    The Masoneilan 173 Series are spring loaded, direct-operated, pressure relieving or back-pressure regulators designed for steam, gas and liquid service. They are available in ½” through 2” (DN15 through DN50) body sizes. These regulators are designed for continuous, rugged industrial use to provide years of reliable service.


    General Data Function

    Pressure Relieving / Back-Pressure


    Steam, Gas, Liquids


    ½” to 2” (DN15-DN50)

    Body Ratings and Connections

    Screwed: NPT ½” through 2” (CN15-DN50)
    Flanged: ASME CL150-CL600
    Material: Carbon Steel, Stainless Steel, Other Alloys


    Plug Type : Disc
    Seat : Integral
    Capacity : Cv ratings from 0.031 up to 32
    Material : Stainless Steel (std.), others on request

    Diaphragm Materials

    Polychloroprene, EPDM, FKM, Stainless Steel


    Masoneilan 173 Regulators Tech Spec (English)

    Tech Spec/Fact Sheet English 1.22 MB

    Masoneilan 173 Back Pressure Regulator Manual (English)

    Manuals English 958.36 KB

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