Description
The ASCO JKF8040H8 is a heavy-duty, 2-way normally closed solenoid valve engineered specifically for fuel gas applications in commercial and industrial HVAC and combustion systems. Featuring a robust aluminum body with NBR (Buna-N) seals, this valve delivers reliable, leak-tight shutoff performance across a wide range of demanding environments.
Key Features
- 2-way, normally closed (NC) operation — valve closes automatically upon de-energization for fail-safe fuel shutoff
- 3/8″ NPT pipe connection for straightforward installation into standard fuel gas lines
- 1.2 Cv flow coefficient for efficient gas flow management
- Operating pressure range: 0–15 PSI, suitable for low-pressure fuel gas service
- 120VAC coil voltage for compatibility with standard commercial power supplies
- High-temperature coil rated for elevated ambient and process temperatures
- Aluminum body construction — lightweight yet durable for long service life
- NBR (Nitrile Butadiene Rubber) seals provide excellent resistance to fuel gases and hydrocarbons
Enclosure & Electrical Details
- NEMA 4X rated enclosure — provides protection against corrosion, dust, and water ingress (indoor/outdoor use)
- Integrated junction box for clean, protected wiring connections
- Screw terminals for fast, secure field wiring without special tools
Typical Applications
- Fuel gas shutoff on commercial boilers and furnaces
- Burner management and combustion control systems
- Industrial gas distribution and process control
- OEM equipment requiring a reliable, code-compliant gas solenoid valve
Specifications
- SKU: JKF8040H8
- Brand: ASCO
- Valve Type: 2-Way Normally Closed Solenoid Valve
- Connection Size: 3/8″ NPT
- Voltage: 120VAC
- Flow Coefficient (Cv): 1.2
- Pressure Range: 0–15 PSI
- Media: Fuel Gas
- Body Material: Aluminum
- Seal Material: NBR (Nitrile)
- Enclosure Rating: NEMA 4X
- Wiring: Junction Box with Screw Terminals
- Coil Type: High Temperature







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