White-Rodgers 36C74-913 Gas Valve

The White-Rodgers 36C74-913 Gas Valve is a professional-grade, straight-through step-opening gas valve engineered for 24VAC HSI/DSI and proven pilot ignition systems. Featuring a 3/4" x 3/4" NPT connection, this universal replacement is built to manage natural gas applications with a standard 0.9" WC step and a full-rated outlet pressure of 3.5" WC. Designed for rugged field use, the 36C74-913 includes reducer bushings and extra 42-inch leads to ensure seamless integration on a variety of furnace and boiler service calls. Its intermittent ignition compatibility and high flow capacity of 280,000 BTU/HR make it a reliable choice for commercial and residential technicians replacing failed 36C74-313 or 36C74-215 units. The valve’s straight-through flow design and top-mounted regulator adjustment simplify the setup process in tight furnace cabinets, maintaining precise fuel delivery for peak system efficiency.

• Universal Compatibility: Serves as a versatile replacement for various White-Rodgers 36C series and OEM models in IID, HSI, and DSI systems.
• Rugged Installation: Robust pipe bosses and included 3/4" x 1/2" reducer bushings accommodate different manifold sizes without extra trips to the van.
• Integrated Safety: Features a plugged pilot and built-in inlet screen to protect internal components from debris and chips.
• Precise Regulation: The 0.9" WC step open feature ensures a smooth, quiet ignition sequence before moving to full manifold pressure.
• Extended Reach: Factory-installed 42-inch leads allow for flexible wiring configurations in diverse HVAC cabinets.

Is the White-Rodgers 36C74-913 compatible with LP gas?
This valve is factory-configured for natural gas only. For liquid propane applications, a dedicated LP conversion kit must be sourced separately as it is not included in the standard box.

What ignition systems does this valve support?
It is specifically designed for Intermittent Ignition (IID), Hot Surface Ignition (HSI), and Direct Spark Ignition (DSI) systems. It is not suitable for older standing pilot systems requiring a thermocouple.

What is the purpose of the 'step open' function?
The step opening style provides a lower initial gas pressure (0.9" WC) to ensure a controlled flame at ignition, preventing hard starts before reaching the full 3.5" WC operating pressure.

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.