Description
The ASCO 8040G23 is a 2-way, normally closed solenoid valve engineered specifically for fuel gas applications in commercial and industrial HVAC systems. Built on ASCO’s proven 8040 Series platform, this valve delivers reliable on/off flow control with a robust aluminum body and NBR (Buna-N) seals rated for compatibility with natural gas, LP gas, and similar fuel gas media.
Key Features
- 2-way, normally closed (NC) configuration — valve closes automatically when de-energized for fail-safe operation
- 3/4″ NPT pipe connection for straightforward installation in standard fuel gas lines
- 120VAC coil voltage for compatibility with common commercial power supplies
- 9.5 Cv flow coefficient for high-capacity fuel gas flow
- Operating pressure range: 0–2 PSI, optimized for low-pressure fuel gas service
- Aluminum body construction — lightweight and corrosion-resistant
- NBR (Nitrile Buna-N) seals — compatible with natural gas, LP, and similar fuel gas media
- NEMA 4X enclosure rating — suitable for indoor and outdoor installations, resistant to washdown, rain, and corrosion
Specifications
- SKU: 8040G23
- Brand: ASCO
- Series: 8040
- Valve Type: 2-Way Solenoid Valve
- Operation: Normally Closed (NC)
- Connection Size: 3/4″ NPT
- Coil Voltage: 120VAC
- Flow Coefficient (Cv): 9.5
- Pressure Range: 0–2 PSI
- Media: Fuel Gas (Natural Gas, LP Gas)
- Body Material: Aluminum
- Seal Material: NBR (Nitrile Buna-N)
- Enclosure Rating: NEMA 4X
Application
The ASCO 8040G23 is ideal for use in commercial heating systems, industrial burner controls, and fuel gas shutoff applications where a reliable, fail-safe normally closed valve is required. The NEMA 4X enclosure makes it suitable for demanding environments including rooftop equipment and areas subject to moisture or washdown. The aluminum body keeps weight low while maintaining structural integrity, and the NBR seals ensure long service life with common fuel gas media.







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