Lochinvar & A.O. Smith 100172013 Gas Valve

The Lochinvar & A.O. Smith 100172013 Gas Valve is an authentic OEM replacement assembly engineered for precise fuel regulation in high-efficiency Knight wall mount boilers. As a critical component of the combustion system, this SIT Sigma 848 gas valve utilizes a 1:1 air-gas ratio pneumatic modulator to ensure the burner receives the exact manifold pressure required for stable ignition and optimal thermal efficiency. It is designed to handle the rigorous modulation cycles of Lochinvar boiler parts, maintaining strict safety parameters for 2nd and 3rd family gas types (Natural Gas and Propane).

Built for a direct-fit install, this 100172013 gas valve assembly features dual automatic shut-off valves and a servo-regulated pressure control system. Technicians servicing Knight WB150, WB151, WB210, and WB211 models will find this valve provides the necessary durability and response time to prevent flame failure and ignition lockouts. Using this genuine replacement gas valve avoids configuration issues often associated with aftermarket "universal" controls, ensuring the gas-air mixture stays within factory-specified CO2 ranges during high and low fire operation.

Key Benefits

• Precise Modulation: Features a 1:1 gas-to-air ratio for consistent combustion performance across the boiler’s entire firing range.
• OEM Compatibility: Specifically calibrated for Knight WB151/211 and WB150/210 series, ensuring hardware and electrical connections align perfectly.
• Enhanced Safety: Integrated dual shut-off solenoids provide redundant protection against gas leaks or improper flow.
• System Longevity: Built with an aluminum alloy body and high-grade internal components to resist the vibration and heat typical of wall-mount boiler cabinets.
• Optimized Efficiency: Accurate gas flow control helps the system maintain peak AFUE ratings, reducing fuel waste and cycling issues.

Common Questions

Is this a direct replacement for the SIT Sigma 848 series?
Yes, the 100172013 is the specific Lochinvar and A.O. Smith OEM part number for the SIT 848 Sigma gas valve used in Knight models. Always verify the part number on the existing valve body before ordering.

Does this valve require field adjustment after installation?
Yes, while this is a factory-spec part, a combustion analyzer must be used by a licensed HVAC contractor to verify and set the high and low fire CO2 levels and offset pressure to match the manufacturer's installation manual.

Can this be used for both Natural Gas and Propane (LP) configurations?
This valve is designed for use in systems burning either gas type; however, the appropriate orifice must be present in the original assembly, and the valve must be calibrated for the specific fuel supply on-site.

This item is not eligible for free shipping.

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.