Robertshaw 700-506 Gas Valve

The Robertshaw 700-506 Millivolt Gas Valve is a high-capacity 7000BMVR series control engineered for demanding HVACR applications, including commercial pool heaters, boilers, and large-scale residential furnaces. As a direct replacement for the 343-701-400, this manual ignition gas valve features a 3/4" NPT inlet and a straight-through 3/4" FPT outlet, delivering a robust capacity of up to 300,000 BTU. Designed for millivolt control systems operating between 250mV and 750mV, it eliminates the need for external power, making it a reliable solution for remote or off-grid installations. The integrated pressure regulator is factory-set at 3.5" WC for Natural Gas, though it is rated for multi-gas compatibility, including LP (with appropriate conversion). Built for the field, it features combination screw/spade NEMA terminals, a 1/4" pilot outlet, and a technical operating range of -40°F to 175°F. This Robertshaw gas valve replacement ensures precise flow control with its standard Off-Pilot-On gas cock dial and filtered inlet screen to prevent debris-related seat failure.

Key Benefits for Contractors:

• High-Flow Performance: Rated for 300,000 BTU, making it suitable for high-demand swimming pool heaters and commercial boilers.
• Universal Thermopile Support: Fully compatible with both coaxial and 2-lead thermopiles for flexible system integration.
• Multi-Position Mounting: Engineered to be mounted in any position except upside down, accommodating tight cabinetry and manifold configurations.
• Field Versatility: Includes two reducer bushings and side outlets (plugged) to adapt to various piping requirements on the job site.
• Contaminant Protection: Equipped with an inlet filtered screen to maintain internal component integrity against pipe scale and sediment.

Common Technical Questions:

Can this valve be used with Propane (LP)?
Yes, while factory-configured for 3.5" WC Natural Gas, the 700-506 is rated for LP and LP/air mixtures. A conversion kit may be required to reach the necessary manifold pressure for LP equipment.

Does this valve require a standing pilot?
Yes, this is a millivolt system valve designed for standing pilot applications where the thermopile generates the small voltage required to operate the gas solenoid.

What is the difference between the 700-506 and the 343-701-400?
These parts are functionally identical. The 700-506 is the current Robertshaw service replacement model providing the same 3/4" x 3/4" configuration and BTU rating.

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.