Water Shut Off Valve Leaking At Stem

Unscrew the handle the packing nut and the threaded valve stem photo 2.

Water shut off valve leaking at stem.

Turn off the water at the house s main shutoff then disassemble the problematic shutoff valve without disconnecting the valve from either the water supply line or the line leading to the toilet. Water shut off valves can also leak at various points on the valve. On a new water valve this almost always stops the leak. Replacing old graphite valve stem packing with new teflon seal.

Water shut off valves often leak at the handle or the stem after they. 1 x research source open a faucet to relieve back pressure on water line. Step by step instruction showing how to stop a shut off valve from leaking at the stem. Turn on all the faucets and flush all the toilets associated with the main shutoff valve to empty the pipes of water.

First shut off the water to the leaking water valve. Remove the old washer and slide on the new one. If it doesn t the packing washer is probably damaged and will need replacement. The first thing you should do to stop the leak is to tighten the packing nut.

Place a bucket or a thick towel on the floor under the leaky valve just in case some residual water leaks out during work. A water shut off valve leaking can make a mess and waste water. Several considerations dictate which is the best water shut off valve for your needs including the size of the inlet diameter and outlet diameter as well as how the valve is operated. So if there is a leak at the valve stem it most likely means the valve is not shut off all the way.

To tighten the packing nut follow these directions. The packing nut is responsible for making a watertight seal where the valve stem meets the water line. Locate and shut off water supply to the line that feeds the leaking valve. If the leak persists before replacing the entire valve try this.

Next remove the handle from the stem and then loosen and remove the packing nut. This valve usually is in the basement or a utility closet and it will be clearly labeled.