BASO H43AA-1 Gas Valve

The BASO H43AA-1 gas valve is a precision-engineered automatic shut-off pilot valve designed for critical safety in standing pilot systems. This 100% shut-off safety valve is compatible with both natural gas and liquid propane (LP), rated for pressures up to 0.5 PSI. It features 3/8" NPT inlet and outlet connections, providing a compact footprint for space-constrained furnace or boiler applications. The unit includes an integrated manual shut-off for local isolation during service and a 1/4" compression coupling pilot tap located on the right side. Engineered for high-temperature resilience, this valve operates reliably within an ambient range of -40°F to 150°F. When troubleshooting a standing pilot ignition failure, this valve serves as a direct replacement component for systems requiring a BASO pilot safety switch. This HVAC gas valve replacement ensures consistent gas flow to both the main burner and pilot assembly, maintaining system pressure integrity across various gas furnace parts configurations.

• Universal Compatibility: Approved for use with Natural Gas and LP applications without additional conversion kits.
• Enhanced Safety: Provides 100% shut-off of all gas to the burner and pilot if the flame is extinguished.
• Service Friendly: Features a manual shut-off handle to facilitate quick system diagnostics and maintenance.
• Standardized Ports: Equipped with a 1/4" compression pilot tap on the right side to match OEM configurations.
• Durable Construction: Built to withstand commercial and industrial environments with high-duty cycle requirements.

Is the BASO H43AA-1 suitable for high-pressure systems?
No, this valve is rated for a maximum pressure of 0.5 PSI (14" W.C.). Using this valve in high-pressure applications will lead to component failure and safety hazards.

Can this valve be used with a 750mV thermopile?
The H43AA-1 is typically used in conjunction with a standard thermocouple. Verify your millivolt output requirements before installation to ensure the solenoid transitions correctly.

What is the flow capacity of the pilot tap?
The pilot tap on this model provides the same gas flow rate as the main valve ports, ensuring stable pilot flame architecture for reliable ignition.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.