Description
The ASCO 8221G27 is a heavy-duty, 2-way normally open 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 surges — protecting piping systems and downstream equipment. The brass body and NBR (Buna-N) seals deliver excellent corrosion resistance and compatibility with water service, while the NEMA 4 enclosure ensures dependable performance in wet or wash-down environments.
Key Features
- 2-way, normally open (N.O.) configuration — valve opens when de-energized
- Pilot-operated, slow-closing design minimizes water hammer
- 1″ NPT pipe connection for straightforward installation
- 120VAC coil voltage for standard commercial power compatibility
- Flow coefficient (Cv) of 11.5 for high-flow water applications
- Operating pressure range: 5–150 PSI
- Brass body construction for corrosion resistance and long service life
- NBR (Nitrile Buna-N) seals compatible with water media
- NEMA 4 enclosure rating — suitable for indoor/outdoor wet locations
Specifications
- SKU: 8221G27
- Brand: ASCO
- Valve Type: 2-Way Solenoid Valve
- Operation: Normally Open (N.O.)
- Actuation: Pilot Operated, Slow Closing
- Port Size: 1″ NPT
- Coil Voltage: 120VAC
- Flow Coefficient (Cv): 11.5
- Pressure Range: 5–150 PSI
- Media: Water
- Body Material: Brass
- Seal Material: NBR (Nitrile)
- Enclosure Rating: NEMA 4
Applications
- Commercial HVAC water systems
- Hydronic heating and cooling circuits
- Irrigation and water distribution control
- Industrial process water lines
- Wash-down and wet-environment installations
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