Description
Marvair 20509 Three-Way Normally Closed Solenoid Valve
The Marvair 20509 is a heavy-duty, pilot-operated solenoid valve engineered for demanding HVAC, industrial, and process control applications. Featuring a 3-way normally closed configuration with quick exhaust functionality, this valve delivers reliable, fast-acting fluid control for air, water, and light oil systems. Its explosion-proof enclosure makes it well suited for hazardous environments where safety and durability are paramount.
Key Features
- 3-way normally closed (NC) valve configuration with quick exhaust design
- 1/4″ NPT port connections for easy installation into standard piping systems
- 120VAC coil voltage for compatibility with common commercial and industrial power supplies
- Pilot-operated design for efficient, low-power actuation
- Brass body construction for excellent corrosion resistance and durability
- NBR (Nitrile Butadiene Rubber) seal and disc for reliable sealing performance
- Explosion-proof enclosure rated for use in hazardous locations
Operating Specifications
- Voltage: 120VAC
- Connection: 1/4″ NPT
- Pressure range (Air and Water): 5–150 PSI
- Pressure range (Light Oil): 5–95 PSI
- Media compatibility: Air, water, and light oil
- Body material: Brass
- Seal/disc material: NBR (Nitrile)
- Enclosure type: Explosion proof
Applications
- HVAC and refrigeration control systems
- Compressed air and pneumatic control circuits
- Water and light oil process lines
- Hazardous location installations requiring explosion-proof rated components
- Industrial automation and fluid power systems
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