Robertshaw 720-400 Valve

The Robertshaw 720-400 Valve is a six-function gas valve engineered for professional HVACR applications requiring high-capacity performance up to 150,000 BTU. This constant pilot control integrates a manual valve, safety shut-off magnet, dual automatic valves, main gas regulator, and pilot adjustment into a single, compact body. Designed for maximum field flexibility, the 1/2x3/4" 24V Combo Gas Valve features a 1/2" NPT inlet and a 3/4" NPT outlet, and the Uni-Kit gas valve conversion package includes the necessary components to switch from the factory-set 3.5" W.C. natural gas to 11.0" W.C. LP configurations. Technicians advantageously utilize its 3-9/16" swing radius to facilitate OEM gas valve replacement in tight furnace or boiler cabinets where standard valves may not fit. The 24VAC standing pilot valve supports multi-position mounting, except for upside-down orientations, and utilizes NEMA terminals for straightforward electrical termination. This heavy-duty regulator ensures precise manifold pressure control across residential and light commercial equipment.

• Broad Compatibility: Replaces numerous OEM 24V controls from brands like Carrier, York, and Honeywell using the included 3/4" x 1/2" and 1/2" x 3/8" reducer bushings.
• Environmental Resilience: Rated for ambient temperatures ranging from -40°F to 175°F, ensuring reliable operation in unconditioned mechanical spaces.
• Installation Versatility: The compact swing radius and multiposition mounting capability allow for easier retrofitting in diverse appliance configurations.
• Field Convertible: Shipped as a Uni-Kit, providing the flexibility to handle both Natural Gas and Liquid Propane applications with a single truck stock item.
• Internal Filtration: Equipped with an inlet filtered screen to protect the internal valve seat and regulator from debris in the gas line.

• Can this valve be used for electronic ignition systems? No, the 720-400 is specifically designed for standing pilot applications; for HSI or DSI systems, refer to the 7200 series intermittent pilot models.
• How do I convert this unit from Natural Gas to LP? Use the included conversion kit to replace the regulator spring and adjusting screw, then verify manifold pressure with a manometer.
• Is it safe to mount this valve upside down? No, the 720 series can be mounted in any orientation except upside down to ensure proper regulator and safety shut-off function.

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.