Description
ASCO 8220G25 2-Way Normally Closed Solenoid Valve Overview
The ASCO 8220G25 is a heavy-duty, pilot-operated solenoid valve engineered for demanding steam and hot water applications in commercial and industrial HVAC systems. With a robust brass body, EPDM diaphragm, and NEMA 4X-rated enclosure, this valve delivers dependable, long-lasting performance in wet, corrosive, or washdown environments.
Key Features
- 2-way, normally closed configuration — valve closes when de-energized for fail-safe operation
- Pilot-operated design for efficient, low-power actuation across the rated pressure range
- 1″ NPT end connections for straightforward inline installation
- High flow capacity with a 13.5 Cv rating to minimize pressure drop
- Rated for steam service up to 125 PSI and hot water service up to 150 PSI
- Minimum operating pressure of 5 PSI for both steam and hot water applications
- 120VAC coil voltage for compatibility with standard commercial control circuits
- Brass body construction for excellent corrosion resistance and durability
- EPDM diaphragm material — ideal for steam, hot water, and mild chemical media
- NEMA 4X enclosure rating — suitable for indoor and outdoor use, including washdown and corrosive environments
Specifications
- SKU: 8220G25
- Brand: ASCO
- Valve Type: 2-Way, Normally Closed
- Operation: Pilot Operated
- Port Size: 1″ NPT
- Coil Voltage: 120VAC
- Flow Coefficient (Cv): 13.5
- 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 boiler systems
- Hot water supply and shutoff in hydronic heating systems
- Industrial process control requiring reliable on/off fluid management
- Outdoor or washdown installations requiring NEMA 4X environmental protection
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