There are approx. 4 valves on a geyser. depends which one
It will cost about $60.00 to replace a hot water gasket valve on a boiler. This is if you do it yourself. If you hire a professional, they will charge you for labor and the ending cost will be much more.
If shut off the hot water valve then you take off your supply line from your hot water valve to your faucet and then turn your hot water valve on slowly (with of course a bucket or something to collect the water under it) and if you can see you have water pressure and flow then most likely the problem would be in your faucet on the hot side. If you have no pressure or flow when you turn the hot valve on then it could be debris plugging your hot water pipe or your hot water service valve (angle stop, straight stop) which older galvanized pipes are known to do so. To fix the problem you would need to find out where the problem is then either fix or replace the faucet or replace the angle/straight stop or try back flushing the hot water pipe and or replace the pipe with pex or copper pipe.
Replace the shower valve.
Replace the pressure relief 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.
the hot water valve shut off valve shuts off the hot water. The cold water valve shuts off the cold water. ;()
AnswerIt could be a blocked pipe or a damaged valve. Do you get hot water in other areas of the house? If not, check the valve on the water heater. If other parts of the house get hot water, replace the hot water valve assembly or repair the hot water valve. If you have hot water at the sink, but not in the shower, the hot water side of the shower valve is clogged by something like rust. Esp. if you have had the hw heater replaced. and you have galvanized pipe instead of copper. Esp if your sink aerators get clogged by rust particles.Search for fixing Delta faucets, open up the valve, and flush out the rust.Buy a kit for replacing parts while you have it opened up.
There are no pressure valves on a regular home hot water system. If you are meaning some kind of industrial application,then say what exactly it is.
The hot water valve should always be open, so the hot water can exit the heater into the system. If your actually meaning opening the drain valve on the bottom of theater, the water in the heater will drain, starting with the hot water stored there, and then the cold water that is entering the tank to replace it will simplt flow out the bottom before being heated. Dpending on where the heater is located will denepnd on how much of a mess the ensuing flood will be.
Not sure what you mean by "hot water valve". More info please.
You have a bad valve, and need to replace it. I replaced the valve and hot water continues to run through the tube through the basement floor.
If you are not living in the desert where the cold water is hot during the summer, check to see if perhaps the plumbing is backwards: is the hot water faucet giving cold water? I once had hot water in my toilets.