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.

Specifications

General Data Function

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

Service

Gas, Air

Sizes

½” through 1-1/2” (DN15 through DN40

Body

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)