Fix a dripping shut‑off valve
This Old House shared a practical how‑to on rebuilding a shut‑off valve to stop household drips, a short repair that can prevent water waste and avoid replacing a full valve assembly. It’s the kind of plumbing work that saves money and keeps a small leak from turning into a bigger problem. (x.com)
A shut-off valve can keep working for years and still drip from one tiny part: the stem behind the handle. This Old House’s fix is to rebuild that inner stem instead of cutting out the whole valve from the pipe. (thisoldhouse.com) That valve is the small control under a sink or behind a toilet that stops water to one fixture. When the stem wears out, the valve may leak around the handle or fail to shut the water off completely. (thisoldhouse.com) The repair starts with shutting off the water supply and removing the valve handle with a screwdriver. Richard Trethewey then loosens the gland nut, which is the nut directly behind the handle that compresses the seal around the stem. (thisoldhouse.com) Once that nut is off, the old stem unscrews from the valve body and comes out as one piece. The replacement part in This Old House’s demo is a multi-turn valve stem repair kit made by BrassCraft. (thisoldhouse.com) The new stem threads into the old valve body, so the pipe connection in the wall stays untouched. After that, the gland nut goes back on, the handle is reattached, and the water can be turned back on for a leak check. (thisoldhouse.com) This shortcut only works when the valve body is still sound. This Old House says full replacement is the better move when you see corrosion, heavy mineral buildup, leaks from the body itself, or a valve that is hard to turn. (thisoldhouse.com) The reason plumbers try the stem first is that the leak is often at the packing seal around the stem, not in the metal body. Family Handyman notes that leaks around the handle area usually come from that seal, which can sometimes be fixed by tightening the packing nut or replacing the packing washer. (familyhandyman.com) This Old House rates the rebuild as easy, estimates 10 to 20 minutes, and puts the cost at about $5. For a valve under a kitchen sink, that is a much smaller job than opening the wall or sweating on a new fitting. (thisoldhouse.com) It is also the kind of repair that pays off before an emergency. A valve that actually closes when you need it is what lets you swap a faucet, replace a toilet fill valve, or stop a small leak before it turns into water on the floor. (thisoldhouse.com)
