Masoneilan 174 Series Spring Loaded, Direct-Operated Reducing or Back-Pressure Regulator

General features:
  • Flow to open or close design (depending on function)
  • Internal pressure sensing
  • Resilient single seat
  • Elastomeric Diaphragm
  • Flexible body orientation to simplify installation
  • Spring Loaded, Direct-Operated Regulator for Pressure Reducing or Relief Applications
  • Description

    The Masoneilan 174 Series regulators are a spring loaded, direct operated regulator for pressure reducing or relief applications in a variety of industrial applications. The large diaphragm area provides more accurate control at low pressure settings and the lever design provides excellent shut-off tightness. These regulators are available in ½” up to 1½” (DN15 through DN40) body sizes with a maximum inlet pressure of 145 psig (10 barg). The simple construction makes it very flexible, easy to install and to maintain.


    General Data Function

    174-1 Pressure reducing
    174-7 Back-Pressure / Pressure Relie


    Gas, Air


    ½” through 1-1/2” (DN15 through DN40


    Connections: Screwed (NPT)

    Ratings and Connections

    Maximum Inlet Pressure
    174-1 Reducing: 145 psig (10 barg)
    174-7 Relief: 4.4 psig (0.3 barg)
    Maximum Outlet Pressure
    174-1 Reducing: 8.8 psig (0.61 barg)

    Set Pressure Range:

    174-1 Reducing: 1.4 inches w.c. to 8.8 psig
    174-7 Relief: 1.4 inches w.c. to 4.4 psig

    Temperature Range:

    -0.4° to 194°F (-18° to 90°C)


    Masoneilan 174 Regulators Tech Spec (English)

    Tech Spec/Fact Sheet English 1.09 MB

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