White-Rodgers 36C84-921 Gas Valve

For veteran technicians in the field, the White-Rodgers 36C84-921 Gas Valve is the standard industry direct replacement for 36C84-220. This unit is engineered to manage Cycle Pilot Intermittent Ignition (IID) systems with precision. It features a 3/4 x 3/4 inch IP gas valve configuration and is 24 VAC compatible, pulling approximately 0.6 Amps. This single-stage, fast opening gas valve supports a capacity of up to 280,000 BTU/HR. Designed for maximum versatility, it includes an LP Kit 3098 for seamless transition from natural gas to liquid propane systems. The assembly provides 4-spade top connections, 1/4 inch quick connect terminals, and 30-inch leads for straightforward integration into existing furnace or boiler wiring harnesses. With a redundant pilot solenoid and an integral pressure switch, this intermittent pilot gas valve maintains stable manifold pressure, factory preset at 3.5 inches W.C., with an adjustable range of 2.5 to 5.0 inches W.C. It is specifically compatible with systems utilizing mercury flame sensor connections.

• Universal Compatibility: Serves as the primary intermittent pilot ignition gas valve replacement for 36C84-220, 36C84-421, and 36C84-317 models.
• Field-Ready Versatility: Ships with a White-Rodgers LP conversion kit and reducer bushings for various pipe diameter requirements.
• Enhanced Safety: Built with a redundant solenoid design and a 1/4 inch pilot fitting, ensuring a secure 24V furnace gas valve operation.
• Extreme Durability: Rated for an ambient temperature range of -40 to 175 degrees F, suitable for demanding rooftop or attic mechanical installations.

Is this the correct replacement for the 36C84-220?
Yes. The 36C84-921 is the official updated version for the obsolete 220, 317, and 421 series valves, maintaining the necessary electrical and footprint characteristics.

Can this valve be used with liquid propane?
Yes. While it is factory-configured for natural gas, the included 3098 LP kit allows for standard conversion by a qualified technician.

What type of ignition system is this compatible with?
This valve is designed strictly for Cycle Pilot/Intermittent Pilot systems and is not suitable for standard standing pilot or direct spark ignition (DSI) applications.

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.