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)
Masoneilan, a Baker Hughes brand, is a global leader in the design and manufacture of control valves, pressure regulators, and valve automation systems. With over a century of engineering excellence, Masoneilan products are trusted for precise flow control, durability, and performance across critical industrial processes.
Its extensive product portfolio includes spring-loaded regulators, globe control valves, positioners, and digital valve controllers designed to optimize efficiency and ensure safe, stable operation in oil & gas, chemical, and power generation applications.
Seven Star LLC supplies authentic Masoneilan valves and regulators across the Middle East, providing clients with high-quality process control solutions backed by Baker Hughes’ global expertise and local support.
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