The BASO Gas Products H43BB-2 1/2" High-Temperature Auto Pilot Valve is a durable safety control designed for high-heat HVAC and commercial heating systems, including furnaces, boilers, and industrial heaters. It automatically regulates gas flow to the pilot, ensuring reliable ignition and consistent burner performance. https://www.partshnc.com/h43bb-2-baso-gas-products-12-hightemp-auto-pilot-valve