Description
The ASCO 8220G404 is a heavy-duty, 2-way normally closed solenoid valve engineered for demanding steam and hot water applications in commercial and industrial HVAC systems. Pilot-operated for reliable, low-power actuation, this valve delivers consistent shut-off performance across a wide range of operating pressures.
Key Features
- 2-way, normally closed (NC) configuration — valve closes when de-energized for fail-safe operation
- Pilot-operated design for efficient, low-wattage actuation
- 1/2″ NPT end connections for straightforward installation into standard piping
- 120VAC coil voltage for compatibility with common commercial control circuits
- 4.7 Cv flow coefficient for optimized flow capacity
- Rated for steam service: 5–50 PSI operating pressure range
- Rated for hot water service: 5–150 PSI operating pressure range
- Brass body construction for corrosion resistance and long service life
- EPDM diaphragm material — compatible with steam, hot water, and other high-temperature media
- NEMA 4X enclosure rating — suitable for indoor and outdoor use, including washdown and corrosive environments
Specifications
- SKU: 8220G404
- Brand: ASCO
- Valve Type: 2-Way Normally Closed (NC)
- Operation: Pilot Operated
- Connection Size: 1/2″ NPT
- Coil Voltage: 120VAC
- Cv (Flow Coefficient): 4.7
- Steam Pressure Range: 5–50 PSI
- Hot Water Pressure Range: 5–150 PSI
- Body Material: Brass
- Diaphragm Material: EPDM
- Enclosure Rating: NEMA 4X
Applications
- Steam distribution and control systems
- Hot water heating and hydronic systems
- Commercial boiler and heat exchanger piping
- Industrial process fluid control
- Environments requiring washdown-rated or corrosion-resistant enclosures
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