The Robertshaw 700-059 Gas Valve is a high-capacity 1-inch NPT gas valve designed for versatility in commercial and residential heating systems. Engineering-grade construction makes this 24V gas valve a robust field solution, serving as the direct replacement for 9004942205 as well as various Lochinvar and A.O. Smith components. This slow opening gas valve feature ensures soft ignition, reducing pilot outage and equipment stress during the startup cycle. As part of the Robertshaw 700 Series Uni-Kit, it is factory-configured for intermittent pilot ignition (IP) but includes the necessary conversion hardware for hot surface ignition (HSI) and direct spark ignition (DSI) systems. With a 720,000 BTU rating and 4.0" WC natural gas regulation, this unit provides the high-volume flow required for boilers, central heating units, and large-scale water heaters. Detailed HVAC part compatibility is maximized through its straight-through design and 14" WC maximum inlet pressure tolerance. Key Benefits Universal Ignition Support: Ships as an Intermittent Pilot valve but includes components for seamless HSI and DSI conversion. High-Capacity Output: Rated for up to 720,000 BTU, making it ideal for heavy-duty commercial boiler and furnace applications. Soft Ignition Performance: The slow-opening actuator prevents hard starts and improves overall system combustion stability. Broad Cross-Reference: Directly replaces obsolete parts from major manufacturers, including A.O. Smith, Lochinvar, and Bradford White. Field Service Friendly: Features accessible wiring terminals and an on/off burner adjustment knob for efficient diagnostic testing. Common Questions Can the 700-059 be used with Liquid Propane (LP)? This specific model is calibrated for Natural Gas. For LP applications, a 1751-013 conversion kit or a dedicated LP regulator must be utilized to ensure safe manifold pressure. What ignition systems is this valve compatible with? Out of the box, it is a 24V IP valve, but it is a "Uni-Kit" model designed to support Hot Surface Ignition and Direct Spark Ignition using the included hardware. Is the slow-opening feature permanent? The slow-opening feature is designed for soft ignition but can be field-removed if the specific application or appliance manufacturer instructions require a standard opening speed. 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.
