Description
ASCO 8220G29 2-Way Normally Closed Solenoid Valve Overview
The ASCO 8220G29 is a heavy-duty, pilot-operated solenoid valve engineered for demanding steam and hot water applications in commercial and industrial HVAC systems. Featuring a 1-1/2″ NPT connection, this 2-way normally closed valve delivers reliable shutoff and flow control with a high flow coefficient of 22.5 Cv, making it well suited for high-volume fluid handling. The brass body construction paired with an EPDM diaphragm ensures excellent compatibility with steam and hot water media, while the NEMA 4X enclosure provides robust protection against dust, moisture, and corrosion — ideal for harsh or wet environments.
Key Features
- 2-Way, Normally Closed (NC) configuration — valve closes when de-energized for fail-safe operation
- 1-1/2″ NPT pipe connection for straightforward installation into standard piping systems
- 120VAC coil voltage for compatibility with common commercial power supplies
- High flow coefficient of 22.5 Cv for efficient, high-capacity flow control
- Pilot-operated design for reliable actuation across the full rated pressure range
- Brass body construction for durability and corrosion resistance
- EPDM diaphragm material — compatible with steam and hot water media
- NEMA 4X enclosure rating — suitable for indoor and outdoor installations in wet or corrosive environments
Specifications
- SKU: 8220G29
- Brand: ASCO
- Valve Type: 2-Way Solenoid Valve
- Operation: Normally Closed (NC), Pilot Operated
- Pipe Size: 1-1/2″ NPT
- Coil Voltage: 120VAC
- Flow Coefficient (Cv): 22.5
- 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 HVAC and industrial systems
- Hot water heating and process piping
- Boiler and hydronic system flow control
- Automated shutoff in wet or corrosive environments requiring NEMA 4X protection
Why Choose the ASCO 8220G29?
ASCO is a globally recognized leader in fluid automation and solenoid valve technology. The 8220G29 combines a robust brass body, chemical-resistant EPDM diaphragm, and a weatherproof NEMA 4X enclosure to deliver long service life in steam and hot water applications. Its pilot-operated design ensures consistent, reliable actuation throughout the rated pressure range, while the high 22.5 Cv rating minimizes pressure drop across the valve — keeping your system running at peak efficiency.
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