Why does hot water come from the cold faucet even when I turned off the hot water valve under all my sinks?

Seperate valve for outside faucet turned off, broken valve stem inside of outside faucet or handle stripped at faucet. ...

broken line under house,shut off valve behind toilet is turned off, blockage at the shut off valve, ...

what valve in what faucet exactly.

Have you turned on the shutoff valve below the sink .

The water valve under the sink is turned off or has gone bad. It is possible that there is a blockage in the faucet itself. I'd start by ensuring that the water valve is turned off, and take the faucet apart and look for anything out of the ordinary. ...

if it is a single lever faucet the cartridge needs to be replaced. check the supply valve under the sink first, ...

mixing valve in a faucet: ok I will assume you are refering to a shower valve, that is the only faucet w/a mixing valve: shut off the hot and cold water. cut out valve or unsweat it. clean and flux new valve, pipe and fittings(if used) sweat in new valve ...

It should have both. Verify that it has two lines to the faucet. If it does, check to see if the stop valve under the sink has been turned off. It may have been leaking and turned off instead of being repaired. ...

it is a tool that resurfacese the seat on a water faucet valve

Turn the water off to the faucet. Remove the handle. The top of the faucet should unscrew to get to the ball valve. Replace the valve and gaskets then reassemble the faucet. ...

Outside at the main shut off valve. Showers/Bathtubs do not normally have a shutoff valve like sinks and toilets. The main water valve for the house must be turned off. ...

You turn off the supply valve and then take apart the outside faucet and change the seal ...

Possibly unscrew your aerator at the end of the spout and see if the screen is clogged. Blow it out and rescrew the aerator on. If that isn't the problem, sometimes things get caught in the spout. Unscrew the spout and turn the water on. If there is water coming from there and not out the spout when it is hooked up, the spout is plugged. If no water coming out when the spout is off, rehook spout and change cartridges...

The water meter is shut off? The main water line is shut off? The valve for that faucet is turned off? The waterline is made of galvanized piping and has corroded shut? Aerator is clogged, remove and clean or replace. ...

Shut the valve below it

if you look under the sink, you will probably see a cutoff valve going up to the sink faucet. turn this on. if that does not fix it, then change you faucet fixture. ...

Depending on which type it is, it either need a new washer or seat in the valve. The washer is a flat rubber disk that seals when you turn the faucet off and the seat is a small rubber cup that does the same thing. ...

I need to perform a faucet repair. How do I stop a leak that is caused by the screw not being tight enough on the valve? ...

When the water from your faucet is sputtering when being turned off, then it is a sign that your water is overheating. Trickling from the valve can also mean over pressure. ...

Flow; it's just a valve.

No. It sounds like you have a bad pressure reducing valve if your on city water or you might have a swamped expansion tank if your on pumped water. But before you go to extreams you might want to unscrew the end of the faucet and clean the aerator. ...

it depends on Where it is leaking from and who the manufacturer is. Moen will replace your cartridge and or faucet for free as they have a lifetime warranty. if it dripping Under the sink you could have a bad valve which means that the entire faucet will need replaced. if it is dripping from the spout it is most likely the cartridge which can be repaired or replaced without having to remove the entire faucet. contact the manufacturer. ...

You can put an aerator wherever there is threading for one.--I'm not sure of your description "brass faucet valve". - The end of the spout is generally threaded for an aerator. ...

Shutting off the valve doesn't drain anything. You need to open something lower than the faucet and open that faucet to let air take the place of the water. ...

To raise the height of an outdoor water faucet, the best thing to do would be to get an extension for the existing pipe that will bring the faucet to the height desired. Remember to turn off the source of the outdoor faucet before starting this project. Remove the faucet valve, screw in the new pipe, replace the faucet valve. Sealing the ends of the new pipe with plumber's tape is also a good idea. ...