Robertshaw 700-886 Gas Valve

The Robertshaw 700-886 gas valve is a heavy-duty, high-capacity millivolt gas control engineered specifically for commercial and industrial thermopile heating systems. This unit features a 3/4" NPT inlet and outlet, providing the flow rates necessary for large-scale boiler and furnace applications. Calibrated for 3.5" WC natural gas, it utilizes a millivolt operator, eliminating the need for external power and ensuring 100% safety shutoff in the event of pilot loss. The Robertshaw 700 series is recognized for its multi-position mounting flexibility—horizontal, vertical, or at a 90-degree angle—making it a versatile HVAC replacement gas valve for tight mechanical rooms. When performing a Robertshaw 700-886 installation, technicians should note the 100,000 BTU/hr capacity and the 250mV to 750mV thermopile requirements. This millivolt gas valve 3/4 inch configuration is built with a rugged die-cast body to withstand high-demand cycling in demanding heating environments.

Technical Key Benefits

• Universal Mounting: Designed for flexible installation in various orientations without compromising regulator performance.
• Millivolt Compatibility: Operates entirely on the 750mV thermopile signal, ideal for off-grid or power-loss protection scenarios.
• High Volume Flow: Large 3/4" NPT ports support high BTU loads common in commercial atmospheric heating units.
• Integrated Safety: Features an internal 100% shut-off mechanism for both the pilot and main burner if the thermopile voltage drops below the safety threshold.

Common Contractor Questions

• Can this valve be converted to Liquid Propane (LP)? Yes, the 700 series is field-convertible with the appropriate Robertshaw conversion kit, provided the technician installs the correct spring and orifice.
• What is the maximum voltage for the operator? This valve is designed for 250mV to 750mV DC systems; applying 24V AC will damage the solenoid coil.
• Does the valve include a pilot adjustment? Yes, there is a dedicated adjustment screw to fine-tune the pilot flame for optimal thermopile millivolt output.

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.