Overview
The ASCO 8043B038 is a pilot-operated solenoid valve from ASCO’s Red Hat Series 8043 gas shutoff line. Designed for reliable on-off control of fuel gas in commercial and industrial gas burners, this valve combines proven engineering with redundant safety features. The 110/120V coil operates at 69W power consumption and handles pressures from 0 to 20 PSI, making it suitable for pilot and main-line fuel shutoff applications requiring dependable, leak-tight performance.
Key Features
- Double-disc design with overtravel provides redundant sealing for leak-tight shutoff
- Visual indication of open and closed positions for at-a-glance status confirmation
- 1-amp proof of closure switch for safety verification (critical for FM-approved installations)
- Pilot-operated, 2-way, normally closed (NC) operation
- Zero-differential diaphragm for reliable actuation across pressure range
- Aluminum body with NBR seals and 305 stainless steel core tube for corrosion resistance
- Factory-set closure switch; not field-adjustable for consistent safety compliance
Technical Specifications
- Voltage & Frequency: 110 VAC 50 Hz / 120 VAC 60 Hz
- Power Consumption: 69W
- Port Size: 3/4″ NPT (threaded)
- Pressure Range: 0–20 PSI
- Operation: 2-way, normally closed solenoid valve
- Actuation Type: Pilot-operated diaphragm
- Fluid Type: Fuel gas (natural gas, propane, etc.)
- Body Material: Aluminum
- Seals & Discs: NBR (nitrile rubber)
- Core Tube: 305 stainless steel
- Test Ports: 1/8″ NPT upstream and downstream with plugs
- Switch Rating: 1 amp SPST (Single Pole Single Throw)
- Series: ASCO Red Hat Series 8043
- Part Number: 8043B038
Typical Applications
- Commercial and industrial gas burner pilot line shutoff
- Main fuel gas line safety shutoff for furnaces and boilers
- Natural gas and propane burner control systems
- FM-approved safety shutoff applications requiring proof of closure
- Combustion system fuel management in HVAC and process heating
- OEM equipment fuel gas supply management
Compatibility & Replacements
Compatible With
- Commercial gas burner control systems rated 110/120 VAC 60 Hz
- Industrial heating and boiler systems with 0–20 PSI fuel gas supply
- Safety interlocks requiring 1-amp proof of closure verification
- HVAC fuel gas shutoff applications
- Equipment with 3/4″ NPT port connections
Replaces / Drop-In Replacement For
Verify compatibility with your system integrator before ordering. ASCO Series 8043 valve specifications vary by model suffix; direct replacement eligibility depends on exact coil voltage, port size, and operational requirements of your original equipment.
Works With
- Manual burner control panels
- Programmable gas burner controllers
- Safety shutoff relay modules and interlocks
- Standard 110/120 VAC electrical control circuits
- FM, UL, and CSA-approved combustion safety systems
