Robertshaw 720-474 Valve

The Robertshaw 720-474 is a professional-grade 24V dual gas valve engineered for high-demand residential and commercial heating applications. As a direct 7200ERCS-1 replacement, this six-function control integrates a manual valve, safety shut-off magnet, dual automatic valves, and a built-in pilot adjustment into a singular, compact manifold. This step-opening gas valve is factory-set for natural gas (3.5" WC) but includes a field-convertible LP gas regulator (11" WC), allowing for maximum flexibility on the job site. With a 150,000 BTU capacity and standard 1/2" NPT inlet/outlet sizes, it provides reliable gas flow control for furnaces, boilers, and commercial water heaters. The unit is designed to withstand extreme ambient temperatures from -40°F to 175°F, ensuring consistent performance in unconditioned mechanical rooms. Whether you are dealing with intermittent pilot ignition or standard 24V AC systems, the 720-474 gas control offers the specialized reliability required by seasoned HVACR technicians.

Key Benefits for Technicians:

• Universal Compatibility: Serves as a versatile 720 series gas valve suitable for natural, manufactured, mixed, and LP gas types.
• Precise Pressure Regulation: Features a convertible gas regulator to handle varying manifold pressure requirements without carrying multiple SKUs.
• Streamlined Installation: Equipped with standard NEMA terminals and a combination screw/spade terminal block for fast wiring.
• Enhanced Safety: Includes an internal filtered screen to protect the valve seat from debris and a safety shut-off magnet for secure operation.
• Serviceable Design: Side outlets (1/2" FPT with plugs) and 1/2" x 3/8" NPT reducer bushings are included to accommodate various piping configurations.

Common Technical Questions:

How do I convert the Robertshaw 720-474 from Natural Gas to LP?
The valve features a convertible regulator. You must install the appropriate conversion kit to switch between the 3.5" WC natural gas setting and the 11" WC LP gas setting for safe operation.

What is the purpose of the "Step-Open" feature on this valve?
The step-opening function allows for a lower initial pressure upon ignition, preventing "booms" or hard starts, before stepping up to full manifold pressure for standard operation.

Can this valve be used for intermittent pilot systems?
Yes, this is a 24V dual gas control designed to work with intermittent pilot or proven pilot ignition systems requiring a pilot gas adjustment.

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.