Description
The ASCO 8221G7 is a heavy-duty, 2-way normally closed solenoid valve engineered for reliable water control in demanding commercial and industrial HVAC applications. Featuring a pilot-operated, slow-closing design, this valve minimizes water hammer and pressure surge — protecting system components and extending service life. The brass body and NBR (Buna-N) seals deliver excellent corrosion resistance and compatibility with water media, while the NEMA 4 enclosure ensures dependable performance in wet or wash-down environments.
Key Features
- 2-way, normally closed (NC) configuration — valve closes when de-energized for fail-safe operation
- Pilot-operated, slow-closing design minimizes water hammer and pressure transients
- 1″ NPT port connection for straightforward installation into standard piping systems
- 120VAC coil voltage for compatibility with common commercial control circuits
- High flow capacity with 11.5 Cv rating
- Operating pressure range: 5–150 PSI
- Brass body construction for durability and corrosion resistance
- NBR (Buna-N) seals for reliable water media compatibility
- NEMA 4 enclosure rating — suitable for indoor/outdoor use and wash-down environments
Specifications
- SKU: 8221G7
- Brand: ASCO
- Valve Type: 2-Way Solenoid Valve
- Operation: Normally Closed (NC)
- Actuation: Pilot Operated, Slow Closing
- Port Size: 1″ NPT
- Coil Voltage: 120VAC
- Flow Coefficient (Cv): 11.5
- Operating Pressure: 5–150 PSI
- Body Material: Brass
- Seal Material: NBR (Buna-N)
- Enclosure Rating: NEMA 4
- Media: Water
Applications
- Commercial and industrial water control systems
- HVAC hydronic systems and cooling towers
- Irrigation and water distribution
- Process water shut-off and flow control
- Wash-down and outdoor installations requiring NEMA 4 protection
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