174 Self-Contained Pressure Reducing or Back Pressure Regulator

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 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

Sizes:
½” through 1-1/2”
(15 through 40 mm)

Ratings and Connections:
• Screwed: NPT

Body Materials:
• Carbon steel

Actuator:
• Integral spring diaphragm

Trim:
• Single seat, disc plug
• Elastomer disc for tight shutoff

Working Range:
• 1.4 inches W.C. to 8.8 psi
(3.4 mbar to 0.61 bar)