Masoneilan Regulators

170 Series Pressure Reducing Regulator
The 170 reducing version is a compact, spring loaded, direct-operated, pressure reducing regulator. It is available in 1/4" NPT only and is suitable for most low capacity applications. The regulator is available in cast iron or carbon steel. The design can handle inlet pressures up to 300 psig (20.7 barg.)
Specification Data CY0170

171 Series Pressure Reducing Regulator
The 171 Series are, direct-operated, pressure reducing regulators. They are available in 1/2 through 1 1/2 inch (DN15 through DN40) with NPT or Gas threaded connections. The regulators are available only in cast iron. The robust construction can sustain rugged use. The design can handle inlet pressures up to 580 psig (40 barg.)
Specification Data CY0171

172 Series Pressure Reducing Regulator
The 172 Series are direct-operated, pressure reducing regulators. They are available in 1/2 through 2 inch (DN15 through DN50) body sizes and can be supplied with a wide range of different end connections. The flanged design provides flexibility to meet custom face-to-face dimensions as required. The regulators have a compact design and durable construction to sustain rugged use.
Specification Data CY0172

173 Series Pressure Reducing Regulator
The 173 Series are direct operated, pressure relieving or back pressure regulators designed for steam, gas and liquid services. Available in body sizes 1/2" through 2" (DN15 through DN50) in a variety of end connections to suit most applications. These regulators are designed for continuous, rugged industrial use to provide years of reliable service.
Specification Data CY0173

174 Series Pressure Reducing Regulator
The 174 Series is a spring loaded, direct-operated regulator for pressure reducing or relief applications in a wide variety of industrial applications. The large diaphragm area provides accurate control at low pressure settings and the lever design provides consistent shut-off tightness. They are available in 1/2" through 1 1/2" body sizes. The pressure reducing design can handle inlet pressures up to 145 psig (10 barg).
Specification Data CY0174

500 Series Reducing & Back Pressure Regulators
These double seated regulators are designed to handle a wide variety of process pressure control applications.
Specification Data CY5256
Instruction Manual EY5256

Models 525, 535H and 526 Reducing & Back Pressure Regulators
Instruction Manual EY5200E

Model 535H Pressure Regulator for Reducing and Differential Service
The Model 535H pressure regulators are designed to provide accurate reduced pressures of air, liquid, saturated and superheated steam.
Specification Data CY5352

10900 Series Actuators for use with 525, 526 and 535H Regulators
The 10900 Series actuators are designed for use with the 500 Series regulators for reducing, back pressure and differential pressure applications.
Specification Data CY5010