ASCO 8040H008 Gas Combustion Solenoid Valve – 120/60, 110/50 – 3/8" NPT – Normally Closed
Product Spec Sheet (PDF)

The ASCO 8040H008 Gas Combustion Solenoid Valve is a normally closed, direct-acting safety shutoff valve designed for controlling fuel gas flow in combustion systems. This valve automatically stops gas flow when electrical power is removed, helping protect burners and heating equipment from unsafe gas discharge.

Part of the trusted ASCO 8040 series, this valve is widely used in commercial and industrial gas burner systems, where dependable gas shutoff and precise control are required. When energized, the valve opens to allow gas flow to the burner; when de-energized, it closes immediately to stop the gas supply.

The 8040H008 operates on 120V AC at 60 Hz or 110V AC at 50 Hz, making it suitable for many HVAC and industrial combustion control systems. Its 3/8" NPT ports provide greater flow capacity than smaller valves in the same series, making it ideal for main burner lines and larger pilot gas systems.

Constructed with a durable aluminum body and NBR seals, the valve is built for long service life in demanding heating environments and is approved for use as a gas safety shutoff valve by UL, FM, and CSA.

Key Features

• Normally closed gas safety shutoff valve

• 120V AC / 60Hz or 110V AC / 50Hz operation

• 3/8" NPT threaded connections

• Direct-acting solenoid valve

• Aluminum body for durability and corrosion resistance

• Suitable for natural gas, LP gas, air, and inert gas

• Fast response for combustion safety systems

• UL / FM / CSA approved safety shutoff valve

• Mountable in any position for flexible installation

Technical Specifications

• Model: 8040H008

• Series: ASCO 8040

• Valve Type: 2-Way Solenoid Valve

• Operation: Normally Closed

• Voltage: 120V AC / 60 Hz or 110V AC / 50 Hz

• Pipe Size: 3/8" NPT

• Orifice Size: 5/16"

• Flow Coefficient: Cv 1.2

• Max Pressure: 15 PSI

• Max Temperature: 125°F

• Body Material: Aluminum

• Seal Material: Buna-N (NBR)

• Media: Natural Gas, LP Gas, Air, Inert Gas

• BTU Capacity: approx. 64,400 BTU/hr

• Weight: approx. 1.3 lb

• Typical Shipping Weight: ~2 lb

Common Applications

HVAC & Heating Equipment

• Gas furnaces

• Unit heaters

• Rooftop HVAC systems

• Hydronic heating systems

• Radiant heaters

• Infrared heaters

• Gas boilers

• Commercial heating systems

Burner & Combustion Systems

• Burner management systems

• Gas burner assemblies

• Pilot gas lines

• Main burner gas trains

• Flame safeguard systems

• Combustion control manifolds

• Industrial burner control systems

Industrial Heating Equipment

• Industrial ovens

• Powder coating ovens

• Paint curing ovens

• Conveyor ovens

• Batch ovens

• Heat treating furnaces

• Kilns

• Industrial dryers

Food Service Equipment

• Commercial bakery ovens

• Pizza ovens

• Conveyor cooking ovens

• Rotisserie ovens

• Commercial smokers

• Food processing dryers

Manufacturing & Process Equipment

• Thermal oxidizers

• Process heaters

• Gas-fired dryers

• Industrial combustion chambers

• Gas distribution manifolds

Agricultural Equipment

• Grain dryers

• Crop drying systems

• Greenhouse heaters

Typical Installation Locations

This valve is commonly installed in:

• Gas trains

• Pilot gas supply lines

• Main burner gas supply piping

• Combustion manifolds

• Burner safety shutoff stages

Package Includes

• (1) ASCO 8040H008 Gas Combustion Solenoid Valve

• Factory-installed coil (120/60, 110/50)