Masoneilan 174 Series

Spring Loaded, Direct-Operated 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

Specifications

Function:

174-1 Pressure reducing

174-7 Back-Pressure / Pressure Relief

Service:                

Gas, Air

Sizes:                    

½” through 1-1/2” (DN15 through DN40

Body:

Connections: Screwed (NPT)

Ratings:

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)