Homewerks Multi-purpose In-line Shutoff Valve Is For Use In Low-pressure, Domestic Water Systems. Suitable For Stopping, Controlling, And Regulating The Supply Of Water Flow. The Waste Or Drain Water Held In The Valve And Pipes On The Outlet Side Of The Valve Drains Through A Port On The Valve When The Valve Is Closed, And The Waste Port Is Opened. Lead-free Design Stop Valve Plus Drain Cap Heavy Cast Iron Handle Compression Ends For Solderless Connection To Copper Tubing