Overview
The ASCO 8040C4 is a direct-acting, two-way solenoid shutoff valve from the Red-Hat series manufactured by Automatic Switch Co. (now an Emerson business). This valve is specifically engineered for safe pilot control of commercial and industrial gas burners, with UL, CSA, and FM approvals as a safety shutoff device. The 8040C4 features a metal Type 1 general purpose enclosure with 7/8″ hole for 1/2″ conduit connection, making it suitable for standard panel and wall mounting in NEMA Type 1 environments.
Key Features
- Two-way, normally closed operation for fail-safe gas shutoff
- Direct-acting solenoid mechanism—no pilot pressure required
- UL, CSA, and FM certified for safety-critical combustion applications
- Red-Hat metal enclosure, Type 1 general purpose rated
- Compact footprint suitable for OEM and retrofit installations
- Rated 15.4W power consumption for reliable coil performance
Technical Specifications
- Series: ASCO 8040 (Combustion Gas Shutoff)
- Coil Power Rating: 15.4W
- Enclosure Type: Red-Hat metal, NEMA Type 1
- Conduit Connection: 7/8″ hole, 1/2″ NPT conduit compatible
- Operation: Two-way direct acting, normally closed
- Safety Approvals: UL, CSA, FM certified
- Typical Fluid: Natural gas, LP gas, inert gases
- Mounting: Panel/wall mount via conduit connection
Typical Applications
The 8040C4 is widely deployed in:
- Commercial and industrial gas burner pilot control systems
- Heating boiler safety shutoff circuits
- Furnace ignition and flame-fail protection
- Process heating equipment with gas fuel
- Emergency gas supply shutoff in safety interlocks
Compatibility & Replacements
Compatible With
- Standard 120V AC, 60Hz electrical circuits (coil voltage varies by model suffix)
- 1/2″ NPT gas line connections
- NEMA Type 1 control cabinets and electrical panels
- Conventional gas burner control modules and ignition systems
- UL 796 and CSA listed safety relay circuits
Replaces / Drop-In Replacement For
The ASCO 8040C4 is interchangeable with earlier Red-Hat combustion shutoff valves in the 8040 series. For exact cross-reference information, verify with your system integrator or ASCO technical support before ordering.
Works With
- Direct-acting solenoid coil architecture (no external pilot lines)
- Manual and automatic burner control systems
- Flame safeguard and ignition interlock circuits
- Standard electrical conduit systems (EMT, PVC)
- ASCO coil replacements and maintenance spares (coil compatibility check required)
