Parker 501 Series industrial ball valves are used as shutoffs for gasoline and diesel-powered vehicles, water & air service lines and plant design plumbing applications. These units feature chrome-plated brass construction that offers excellent impact and corrosion resistance. They have PTFE seals & seals to provide maximum corrosion resistance and a quarter turn handle to permit stop action for full shutoff application. Choose from an array of these general purpose ball valves, available in 1/4, 3/8 and 1/2 inch pipe sizes.