Bradford White 243-42780-01 Gas Valve

The Bradford White 243-42780-01 Gas Valve is an OEM-grade Natural Gas gas control valve designed for specific high-capacity commercial and residential water heating applications. Operating on a 24V AC circuit, this valve features a 3/4-inch NPT inlet and outlet to handle increased flow requirements. It is factory-calibrated for a 4.5" WC manifold pressure, ensuring consistent thermal output and burner efficiency across high-demand cycles. As a specialized 24V water heater gas valve, it integrates seamlessly with intermittent pilot ignition (IPI) systems or electronic controls typically found in Bradford White commercial water heaters. Contractors should verify the 4.5-inch water column rating against the equipment's rating plate to prevent over-firing. This robust component provides reliable safety shut-off and precise fuel regulation, making it a critical replacement part for maintaining system integrity and meeting strict NOx or combustion standards in professional HVACR installations.

• Optimized Flow Rate: Large 3/4" NPT connections support high-BTU load requirements without excessive pressure drop.
• Universal 24V Compatibility: Standard 24V AC operation allows for straightforward integration with existing electronic ignition control boards.
• Precision Pressure Management: Pre-set 4.5" WC regulation ensures stable manifold pressure for optimal combustion and heat transfer.
• OEM Reliability: Genuine Bradford White replacement ensures physical fitment and electrical compatibility within the appliance's safety string.

Is this valve compatible with LP gas systems?
No, this specific model is calibrated for Natural Gas at 4.5" WC. Conversion to Liquid Propane requires a specific LP orifice kit or a different valve model designated for 10" WC operation.

Can I use this on a standard 1/2" gas line?
This valve uses 3/4" NPT threads. If your supply line or burner manifold is 1/2", you will need appropriate bushings, though it is recommended to match the OEM diameter to maintain the intended gas velocity.

Does this valve include the pilot assembly?
This is the gas control valve only. It features ports for the pilot tube and thermocouple/pilot sensor connections, but those components must be sourced separately or reused from the existing assembly.

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.