Description
ASCO 8220G411 2-Way Normally Closed Solenoid Valve Overview
The ASCO 8220G411 is a heavy-duty, pilot-operated solenoid valve engineered for reliable on/off control of steam and hot water in demanding commercial and industrial HVAC and hydronic systems. With a 1″ NPT connection, 120VAC coil, and a robust brass body paired with an EPDM diaphragm, this valve delivers dependable performance across a wide range of operating pressures and temperatures.
Key Features
- 2-way, normally closed (NC) configuration — valve closes when de-energized for fail-safe operation
- Pilot-operated design for efficient actuation across the full pressure range
- 1″ NPT pipe connection for straightforward installation into standard piping systems
- 120VAC coil voltage for compatibility with common commercial power supplies
- High flow capacity with an 11.5 Cv rating to minimize pressure drop
- 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 material — ideal for steam, hot water, and other high-temperature media
- NEMA 4X enclosure rating — provides protection against dust, splashing water, and corrosion for indoor and outdoor installations
Specifications
- SKU: 8220G411
- Brand: ASCO
- Valve Type: 2-Way Solenoid Valve
- Operation: Normally Closed (NC), Pilot Operated
- Pipe Size: 1″ NPT
- Coil Voltage: 120VAC
- Flow Coefficient (Cv): 11.5
- 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 control in commercial HVAC systems
- Hot water heating and hydronic system control
- Industrial process fluid control
- Boiler and heat exchanger systems
- Outdoor or wash-down environments requiring NEMA 4X protection
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