BrassCraft 1/2 inches Compression Angle Stop Valve is sure to be of great use to you. The stop valve is most often used where the water pipe enters the room from the wall. With a 90 degree turn of the angle stop valve handle, you can stop the flow of water leading to the plumbing fixture, allowing for maintenance and repair without shutting off the water to the entire home. Made of brass, the valve has a maximum pressure of 125 PSI. OD compression outlet 1/4-turn angle valve controls water flow to household plumbing fixtures like faucets, toilets, dishwashers, icemakers, washing machines, etc.