Which way to turn angle stop to shut off?

To shut off an angle stop, turn the handle clockwise. This is the standard direction for closing most valves, often remembered by the phrase "righty-tighty, lefty-loosey." For multi-turn angle stops with a round wheel handle, you will need to rotate the handle several times until it stops moving, indicating the valve is fully closed. For quarter-turn ball valve angle stops with a lever handle, turn the lever 90 degrees so that it is perpendicular to the pipe or supply line. When the lever is parallel to the pipe, the valve is open; when it is perpendicular, it is closed. It is important to turn the valve gently to avoid damaging the internal mechanism, especially if it has not been used in a long time. After shutting off the valve, test the fixture to ensure the water flow has stopped completely. If the handle is stiff, do not force it; instead, try applying a penetrating lubricant or consult a plumber to prevent breakage.