Robertshaw 700-504 Gas Valve

The Robertshaw 700-504, also identified as the 7000BMVR series, is a heavy-duty millivolt gas valve engineered for high-capacity heating systems such as commercial water heaters, pool heaters, and central furnaces. This 1/2" x 3/4" gas valve features a straight-through body design with a 1/2" NPT inlet and a 3/4" FPT outlet, delivering a flow capacity of 240,000 BTU. It is factory-set for 3.5" WC natural gas regulation but is multi-positional and field-convertible for L.P. applications using the appropriate conversion kit. The Robertshaw 700-504 millivolt control operates via a 250mV to 750mV thermopile circuit, making it compatible with both coaxial and two-lead pilot generators. With a broad ambient temperature rating of -40°F to 175°F and NEMA-standard combination screw/spade terminals, this valve ensures reliable performance in demanding environments without the need for external line voltage.

• High BTU Output: Supports systems up to 240,000 BTU, ideal for light commercial and large residential applications.
• Versatile Mounting: Can be installed in any position (except upside down) to accommodate tight mechanical room footprints.
• Multi-Gas Compatibility: Approved for use with Natural, LP, manufactured, mixed, or LP/air mixtures.
• Flexible Porting: Features a straight-through outlet with additional 1/2" side outlets (plugged) for custom manifold configurations.
• Standardized Terminals: Equipped with 1/4" tubing pilot outlets and NEMA-compliant terminals for rapid field wiring.

Can I use this valve to replace a standing pilot system without a thermopile?
No, the 700-504 is a millivolt system specifically designed to be powered by a 750mV thermopile (pilot generator). It will not function with a standard thermocouple-only standing pilot assembly.

What is the proper procedure for converting this valve to Propane (LP)?
To convert the 3.5" WC Natural Gas setting to L.P., you must install a Robertshaw 1751-003 or equivalent conversion kit. Performance and safety depend on matching the regulator spring to the gas type.

Does this valve support side-outlet piping?
Yes, while the primary flow is 1/2" x 3/4" straight-through, there are 1/2" side outlets provided with plugs that can be utilized based on the specific furnace or boiler orientation.

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.