
Reznor 159743 Gas Valve
The Reznor 159743 Gas Valve is a critical OEM replacement part designed for high-performance gas flow regulation in commercial and industrial unit heaters. As a Dual Combination Gas Valve (often cross-referenced with the White Rodgers 36G series), this 1/2-inch NPT component is engineered for direct spark ignition (DSI) and hot surface ignition (HSI) systems. This single-stage valve facilitates a fast opening sequence, ensuring reliable combustion for models like the Reznor RDF, ADF, and RDCB series. It supports both natural gas and propane (LP) applications with a standard 24V furnace control circuit. The robust internal pressure regulator is factory-set for 3.5" W.C. but remains field-adjustable to meet specific manifold requirements. For technicians, the compact footprint and multi-poise mounting capability allow for versatile orientation in tight cabinet spaces, while the integrated inlet and outlet pressure taps simplify diagnostic testing during routine maintenance or calls for no-heat troubleshooting.
Key Benefits- OEM Compatibility: Precision-engineered for a seamless fit in Reznor HVAC equipment, maintaining original factory specifications.
- Versatile Fuel Support: Dual-fuel capable for natural gas or propane systems (conversion kit required for LP).
- Simplified Diagnostics: Features built-in pressure taps for quick manifold and inlet pressure readings.
- Flexible Installation: The multi-poise design allows the valve to be mounted in any orientation, including upside down.
- Redundant Solenoids: Dual safety coils provide a redundant shut-off for maximum operational security.
Is the Reznor 159743 compatible with my current heater?
This dual comb gas valve is specifically designed for Reznor unit heaters and duct furnaces. Verify your model number (such as RDF or ADF) and check for the 1/2" NPT pipe size to ensure a proper match.
Can I use this for a propane conversion?
Yes, while this valve is often setup for natural gas out of the box, it is fully convertible to LP. A separate conversion kit is necessary to swap the regulator spring for higher pressure requirements.
How do I troubleshoot a clicking gas valve?
Technicians often see "clicking" when there is a voltage drop from the ignition control board or a loose 24VAC connection. Always check for a steady 24V signal and verify there are no safety limit switches tripping the circuit before replacing the valve.
This item is not eligible for free shipping.
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.
Reznor 159743 Gas Valve
The Reznor 159743 Gas Valve is a critical OEM replacement part designed for high-performance gas flow regulation in commercial and industrial unit heaters. As a Dual Combination Gas Valve (often cross-referenced with the White Rodgers 36G series), this 1/2-inch NPT component is engineered for direct spark ignition (DSI) and hot surface ignition (HSI) systems. This single-stage valve facilitates a fast opening sequence, ensuring reliable combustion for models like the Reznor RDF, ADF, and RDCB series. It supports both natural gas and propane (LP) applications with a standard 24V furnace control circuit. The robust internal pressure regulator is factory-set for 3.5" W.C. but remains field-adjustable to meet specific manifold requirements. For technicians, the compact footprint and multi-poise mounting capability allow for versatile orientation in tight cabinet spaces, while the integrated inlet and outlet pressure taps simplify diagnostic testing during routine maintenance or calls for no-heat troubleshooting.
Key Benefits- OEM Compatibility: Precision-engineered for a seamless fit in Reznor HVAC equipment, maintaining original factory specifications.
- Versatile Fuel Support: Dual-fuel capable for natural gas or propane systems (conversion kit required for LP).
- Simplified Diagnostics: Features built-in pressure taps for quick manifold and inlet pressure readings.
- Flexible Installation: The multi-poise design allows the valve to be mounted in any orientation, including upside down.
- Redundant Solenoids: Dual safety coils provide a redundant shut-off for maximum operational security.
Is the Reznor 159743 compatible with my current heater?
This dual comb gas valve is specifically designed for Reznor unit heaters and duct furnaces. Verify your model number (such as RDF or ADF) and check for the 1/2" NPT pipe size to ensure a proper match.
Can I use this for a propane conversion?
Yes, while this valve is often setup for natural gas out of the box, it is fully convertible to LP. A separate conversion kit is necessary to swap the regulator spring for higher pressure requirements.
How do I troubleshoot a clicking gas valve?
Technicians often see "clicking" when there is a voltage drop from the ignition control board or a loose 24VAC connection. Always check for a steady 24V signal and verify there are no safety limit switches tripping the circuit before replacing the valve.
This item is not eligible for free shipping.
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.
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
The Reznor 159743 Gas Valve is a critical OEM replacement part designed for high-performance gas flow regulation in commercial and industrial unit heaters. As a Dual Combination Gas Valve (often cross-referenced with the White Rodgers 36G series), this 1/2-inch NPT component is engineered for direct spark ignition (DSI) and hot surface ignition (HSI) systems. This single-stage valve facilitates a fast opening sequence, ensuring reliable combustion for models like the Reznor RDF, ADF, and RDCB series. It supports both natural gas and propane (LP) applications with a standard 24V furnace control circuit. The robust internal pressure regulator is factory-set for 3.5" W.C. but remains field-adjustable to meet specific manifold requirements. For technicians, the compact footprint and multi-poise mounting capability allow for versatile orientation in tight cabinet spaces, while the integrated inlet and outlet pressure taps simplify diagnostic testing during routine maintenance or calls for no-heat troubleshooting.
Key Benefits- OEM Compatibility: Precision-engineered for a seamless fit in Reznor HVAC equipment, maintaining original factory specifications.
- Versatile Fuel Support: Dual-fuel capable for natural gas or propane systems (conversion kit required for LP).
- Simplified Diagnostics: Features built-in pressure taps for quick manifold and inlet pressure readings.
- Flexible Installation: The multi-poise design allows the valve to be mounted in any orientation, including upside down.
- Redundant Solenoids: Dual safety coils provide a redundant shut-off for maximum operational security.
Is the Reznor 159743 compatible with my current heater?
This dual comb gas valve is specifically designed for Reznor unit heaters and duct furnaces. Verify your model number (such as RDF or ADF) and check for the 1/2" NPT pipe size to ensure a proper match.
Can I use this for a propane conversion?
Yes, while this valve is often setup for natural gas out of the box, it is fully convertible to LP. A separate conversion kit is necessary to swap the regulator spring for higher pressure requirements.
How do I troubleshoot a clicking gas valve?
Technicians often see "clicking" when there is a voltage drop from the ignition control board or a loose 24VAC connection. Always check for a steady 24V signal and verify there are no safety limit switches tripping the circuit before replacing the valve.
This item is not eligible for free shipping.
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.












