BrassCraft® 3/8 in FNPT inlet x 3/8 in OD compression outlet multi-turn angle valve with lockshield, loose key and stuffing box controls water flow to household plumbing fixtures - faucets, toilets, dishwashers, icemakers, washing machines and more. The angle valve is most often used where the water pipe enters the room from the wall. With a few turns of the key, you are able to stop or start the flow of water leading to the plumbing fixture, allowing for maintenance and repair without shutting off the water to the entire home. Valve features lockshield with a loose key to help protect against tampering and accidental activation. Stuffing box provides additional protect against leaks at the valve stem.