Description
ASCO 8220G27 Pilot-Operated Solenoid Valve Overview
The ASCO 8220G27 is a heavy-duty, pilot-operated, 2-way normally closed solenoid valve engineered for demanding steam and hot water applications. With a robust brass body, EPDM diaphragm, and a NEMA 4X-rated enclosure, this valve delivers reliable, leak-free shutoff performance in commercial and industrial HVAC and hydronic systems.
Key Features
- 2-way, normally closed (NC) configuration — valve closes when de-energized for fail-safe operation
- Pilot-operated design for efficient actuation across a wide pressure range
- 1-1/4″ NPT end connections for straightforward pipe installation
- High flow capacity with a 15 Cv flow coefficient
- 120VAC coil voltage for compatibility with standard commercial control circuits
- Brass body construction for excellent corrosion resistance in steam and hot water service
- EPDM diaphragm rated for compatibility with steam and hot water media
- NEMA 4X enclosure rating — suitable for indoor and outdoor use, resistant to corrosion, dust, and washdown
Pressure & Media Ratings
- Steam service: 5–125 PSI operating pressure range
- Hot water service: 5–150 PSI operating pressure range
- Pilot-operated actuation requires a minimum differential pressure of 5 PSI to open
Specifications
- Brand: ASCO
- Model / SKU: 8220G27
- Valve Type: 2-Way, Normally Closed, Pilot Operated
- Connection Size: 1-1/4″ NPT
- Coil Voltage: 120VAC
- Flow Coefficient (Cv): 15
- Steam Pressure Range: 5–125 PSI
- Hot Water Pressure Range: 5–150 PSI
- Body Material: Brass
- Diaphragm Material: EPDM
- Enclosure Rating: NEMA 4X
Typical Applications
- Steam distribution and control in commercial HVAC systems
- Hot water heating and hydronic system shutoff
- Boiler room piping and steam process control
- Industrial fluid control requiring corrosion-resistant enclosures
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