When inappropriately applied, a valve stem seal can leak constantly, increase maintenance costs ... extending out the side of the valve that is connected to a plug, disc, or ball. As the shaft turns, ...

Pro tip: If water leaks from around the ball stem, use the spanner tool to tighten the adjusting ring until the leak stops ..

A main water shutoff valve usually uses a lever operating a ball valve to easily shut down the incoming water for the entire ...