The Honeywell 926AA2XM-A9T-L is a combination gas control valve used in gas-fired boilers, furnaces, and water heaters. It features an automatic pilot safety shutoff and has a manual gas shutoff valve, two thermocouples, a pressure regulator, and a manual vent valve. It is designed for use with both natural and propane gas. The valve is UL listed and approved for use in the United States.