This Lochinvar gas valve, known as the ShutterGas Valve with a 1-1/2 National Pipe Thread (NPT), is a key component in gas-powered appliances. It is designed to control the flow of gas into a system, ensuring safe and efficient operation. The valve features a 1-1/2 inch NPT connection size, which is standard for many industrial applications. The ShutterGas design refers to its ability to quickly open or close, providing precise control over the gas flow. Made by Lochinvar, a reputable manufacturer in the heating and cooling industry, this valve is built for durability and reliability.