BrassCraft® 1/2 in Nominal C Inlet x 3/8 in OD Compression Outlet Multi-Turn Straight Valve with 5 in C Extension Tube and Bell Escutcheon controls water flow to household plumbing fixtures - faucets, toilets, dishwashers, icemakers, washing machines and more. The straight valve is most often used where the water pipe enters the room from the floor. With a few turns of the valve handle, you are able to stop the flow of water leading to the plumbing fixture, allowing for maintenance and repair without turning off water to the entire home. BrassCraft® Straight Supply Stop Valve, Lead Free Multi-Turn, Series: CS41B, 1/2 in C x 3/8 in OD Compression, 125 psi, 1 Piece, Brass/Copper, Satin Nickel, Domestic