Description
The ASCO 8220G409 is a heavy-duty, pilot-operated 2-way normally closed solenoid valve engineered for demanding steam and hot water applications in commercial and industrial HVAC systems. Built with a robust brass body and EPDM diaphragm, this valve delivers reliable, leak-tight shutoff across a wide range of operating pressures and temperatures. The NEMA 4X enclosure ensures protection against corrosion, dust, and water ingress, making it well-suited for harsh mechanical room environments.
Key Features
- 2-way, normally closed (NC) pilot-operated design — valve closes automatically when de-energized for fail-safe operation
- 3/4″ NPT end connections for straightforward installation into standard piping systems
- 120VAC coil voltage for compatibility with common commercial control circuits
- 8.8 Cv flow coefficient for high-capacity fluid control
- Rated for steam service: 5–125 PSI operating pressure range
- Rated for hot water service: 5–150 PSI operating pressure range
- Brass body construction for excellent corrosion resistance and durability
- EPDM diaphragm — ideal for steam, hot water, and other high-temperature media
- NEMA 4X enclosure rating — protects against corrosion, dust, splashing water, and hose-directed water
Specifications
- SKU: 8220G409
- Brand: ASCO
- Valve Type: 2-Way Normally Closed (NC)
- Operation: Pilot Operated
- Connection Size: 3/4″ NPT
- Coil Voltage: 120VAC
- Flow Coefficient (Cv): 8.8
- Steam Pressure Range: 5–125 PSI
- Hot Water Pressure Range: 5–150 PSI
- Body Material: Brass
- Diaphragm Material: EPDM
- Enclosure Rating: NEMA 4X
Applications
- Steam distribution and shutoff in boiler and hydronic systems
- Hot water control in commercial HVAC and process piping
- Mechanical rooms and plant environments requiring corrosion-resistant enclosures
- Automated fluid control in building automation and energy management systems
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