This Lochinvar Adapter Union is a plumbing component designed to connect pipes of different sizes. It features a G1" (British Standard Pipe Parallel) thread on one end and a 3/4 NPT (National Pipe Thread) on the other, facilitating seamless integration between different pipe systems. The adapter union is made from brass, a material known for its durability and resistance to corrosion, ensuring longevity in various environmental conditions. This product is typically used in water supply applications, providing a secure and leak-free connection between pipes.