Masoneilan 172 Series Spring loaded, Direct Operated, Pressure Reducing Regulator

General features:
  • Flow to open design
  • 9 to 14 different Cv ratings for each size to assure high accuracy of regulation
  • Metal or Sot Seat constructions
  • Internal pressure sensing (external on request)
  • Different face to face dimensions available
  • Wide range of actuator sizes according to the requested regulation range
  • Elastomeric or metal (316 st. st.) for fluid and application compatibility
  • Fully sealed construction available (suitable for dangerous medium; ATEX compliant)
  • Balanced construction available for high pressure drops
  • Description

    The Masoneilan 172 series are spring loaded direct-operated, pressure reducing regulators. Their main function is to regulate the outlet pressure. They are available in ½” to 2” (DN15 through DN50) body sizes and can be supplied with a wide range of different end connections. The “bolted” flanged design provides flexibility to meet custom face to face dimensions as required, simplifying replacement of existing units. These regulators have a compact design and durable construction to withstand harsh conditions while being easy to install and to maintain.


    General Data Function

    Pressure Reducing


    Steam, Gas, Liquids


    ½” to 2” (DN15-DN50)

    Body Ratings and Connections

    Screwed: NPT ½” through 2” (CN15-DN50)
    Flanged: ASME CL150-CL600
    High Pressure CL900/1500 Inlet available


    Carbon Steel, Stainless Steel, Other Alloys


    Plug Type : Disc
    Seat : Integral
    Material : Stainless Steel (std.), others on request
    Capacity : Cv ratings from 0.031 up to 12.8

    Diaphragm Materials

    Polychloroprene, EPDM, FKM, Stainless Steel


    Masoneilan 171-172 Regulators Tech Spec (English)

    Tech Spec/Fact Sheet English 1.38 MB

    Masoneilan 171-172 Regulators Fact Sheet (English)

    Tech Spec/Fact Sheet English 100.85 KB

    Masoneilan 171-172 Regulator Manual (English)

    Manuals English 1.6 MB

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