Overview
The Magnatrol 117S25 is a full-port, normally closed solenoid valve engineered for precise control of steam in industrial systems. Rated for 120V 60Hz operation with a maximum differential pressure of 50 PSI, this valve features 1-1/4″ NPT connections and robust bronze construction. The valve opens when energized and closes when de-energized, making it ideal for applications requiring reliable on-off control of steam flow.
Key Features
- Normally closed (NC) design—opens when energized, closes when de-energized
- Full-port bronze body with globe pattern for maximum flow capacity
- 1-1/4″ NPT threaded end connections
- 50 PSI maximum differential pressure rating
- Stainless steel plunger and pilot valve for durability and corrosion resistance
- 1/2″ NPS conduit connection on coil enclosure
- Horizontal mount orientation with vertical solenoid enclosure
Technical Specifications
- Electrical Rating: 120V AC, 60Hz, 40W
- Valve Type: Full-port, normally closed solenoid valve
- Connection Size: 1-1/4″ NPT
- Maximum Differential Pressure: 50 PSI
- Valve Body Material: Cast bronze
- Piston Material: Bronze
- Plunger Material: 430 stainless steel
- Pilot Valve Material: 303 stainless steel
- Spring Material: Inconel
- Bonnet Tube Material: 304 stainless steel
- Coil Enclosure: Malleable or cast iron with 1/2″ NPS conduit connection
- Body Seal: Non-asbestos gasket
- Orifice Seal: Glass-filled PTFE
- Operating Principle: Pilot-operated solenoid valve—energizes pilot valve to relieve pressure above piston
Typical Applications
- Steam system flow control and shutdown
- Industrial steam heating systems
- Boiler control applications
- On-off steam flow management in process equipment
- Steam trap bypass and relief applications
Compatibility & Replacements
Compatible With
- Standard 120V AC 60Hz industrial electrical systems
- 1-1/4″ NPT piping and manifold systems
- Steam systems rated to 50 PSI maximum differential
- Horizontal pipe installations with vertical solenoid mounting
Replaces / Drop-In Replacement For
- Magnatrol Type S full-port solenoid valves in equivalent ratings
- MS117S25 (variant model designation)
- G117S25SC-ACTS (newer generation equivalent)
Works With
- Direct 120V AC electrical controls and contactors
- Steam pressure gauges and relief systems
- Industrial HVAC and boiler control systems
- Pneumatic and thermal actuator systems requiring solenoid valve interface
