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

    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 features:

    • Flow to close 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)

    173

    Specifications

    General Data

    Function

    Pressure Relieving / Back-Pressure

    Service

    Steam, Gas, Liquids

    Sizes

    ½” to 2” (DN15-DN50)

    Body

    Ratings & Connections :

    Screwed : NPT ½” through 2” (CN15-DN50)

    Flanged : ASME CL150-CL600

    Material : Carbon Steel, Stainless Steel, Other Alloys

    Trim

    Plug Type : Disc

    Seat : Integral

    Material : Stainless Steel (std.), others on request

    Capacity : Cv ratings from 0.031 up to 32

    Diaphragm Materials 

    Polychloroprene, EPDM, FKM, Stainless Steel

173 Self-Contained Back Pressure Regulators

173 Self-Contained Back Pressure Regulators

Threaded or Flanged Connections Carbon Steel, Stainless Steel & Alloy Constructions