Description
ASCO 8040H7 Two-Way Normally Closed Solenoid Valve
The ASCO 8040H7 is a heavy-duty, two-way normally closed solenoid valve engineered for reliable fuel gas shutoff and control in demanding HVAC and commercial heating applications. With a rugged aluminum body, NBR (Buna-N) seals, and a NEMA 4X rated enclosure, this valve delivers dependable performance in both indoor and outdoor environments where moisture, dust, and corrosive conditions are a concern.
Key Specifications
- Valve Type: 2-Way, Normally Closed (NC)
- Port Size: 1/4″ NPT
- Voltage: 120VAC
- Flow Coefficient (Cv): 1.1
- Pressure Range: 0–15 PSI
- Media: Fuel Gas
- Body Material: Aluminum
- Seal Material: NBR (Nitrile Butadiene Rubber)
- Enclosure Rating: NEMA 4X
- SKU: 8040H7
Design & Construction
The aluminum valve body provides a lightweight yet durable housing suited for fuel gas service. NBR seals offer excellent resistance to petroleum-based gases and oils, ensuring a long service life with minimal maintenance. The NEMA 4X enclosure protects the solenoid coil from water ingress, dust, and corrosion — making it ideal for installations exposed to wash-down environments or outdoor conditions.
Operation
As a normally closed valve, the 8040H7 remains shut when de-energized, providing a fail-safe shutoff for gas lines. When 120VAC is applied to the coil, the valve opens to allow gas flow. This design is critical for safety in burner management systems, heating equipment, and gas appliance controls where automatic shutoff is required upon loss of power.
Applications
- Commercial and industrial fuel gas shutoff
- Burner management and combustion control systems
- Heating equipment and boiler gas trains
- Gas appliance solenoid control
- OEM equipment requiring NEMA 4X-rated solenoid valves
Why Choose the ASCO 8040H7?
ASCO is a globally recognized leader in solenoid valve technology. The 8040H7 combines proven reliability with a compact 1/4″ NPT footprint, making it easy to integrate into new or retrofit gas control systems. The NEMA 4X rating and aluminum construction ensure long-term durability even in harsh service environments.
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