BrassCraft 1/2 in. nominal compression inlet x 7/16 in. O.D. and 1/2 in. slip-joint outlet 1/4-turn straight ball valve controls water flow to household plumbing fixtures - faucets, toilets, dishwashers, icemakers, washing machines, etc. Valves with slip joint outlets are commonly used in earthquake pr1 areas. The straight-style body is most often used where the water pipe enters the room from the floor. With a quarter turn of the valve handle, you are able to stop the flow of water leading to the plumbing fixture, allowing for maintenance and repair without shutting off the water to the entire home. BrassCraft's KT series stops feature high performance seats uniquely designed for corrosion resistance and a watertight seal. Precision - machined brass ball mated with PTFE seats assure ease of use, even after long periods of time. Blow-out proof, plated stem is assembled from the inside with double o-rings to help ensure safe, reliable performance. 100% leak tested to ensure reliable, leak-free operation.