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Change A Kitchen Drain Shut Off Valve [2012-03-20]

 

Kitchen Drain Shut-off valves are important for operating plumbing devices that should be installed for every fixture in the house or business.  Shut-off valves located in every plumbing fixture, will limit the work area, and keep the other parts of the house functional.
Remove Faulty Shut-Off Valve
1 Turn off the main water valve to the house. The water supply valve is usually between the house and the water meter. Go to the circuit breaker panel; turn off the breaker to the hot water heater. This is a preventative measure to keep the heating elements from overheating.
2 Go to the shut-off valve you are replacing. Turn on the faucet to allow any excess water to drain from the system. If you are replacing a shut-off valve for a toilet, flush the toilet.
3 Disconnect the faucet or toilet water supply line from the shut-off valve. The water supply lines have a nut on the end that thread onto the shut-off valve. Turn the nut counterclockwise with a wrench.
4 Examine the connection between the house water pipe to the Gas Shut Off Valve. Most house pipes are copper, and the shut-off valve connects either with a compression nut or it is soldered onto the pipe. If you have a compression nut on the shut-off valve, turn the nut clockwise to loosen it from the shut-off valve. You are looking at the nut backward when facing the wall. Pull the shut-off valve away from the house pipe. Pull the small plastic compression ring and the nut off of the house pipe.
5 Cut the house pipe as close to the shut-off valve as possible with a hacksaw, if your valve is soldered onto the house pipe. Make the cut as straight as possible. Remove any burrs on the end of the house pipe with a small file.
Install New Shut-Off Valve
6 Wrap the threads on the new shut-off valve with plumber's tape. Clean the outside of the end of the house pipe with an emery cloth. Place the compression nut over the house pipe with the threads of the nut pointing away from the wall or floor. The compression nut is solid on one end and open on the other end.
7 Slide the compression ring over the end of the house pipe. The angle of the compression ring must point away from the wall or floor. The compression ring looks similar to a plastic O-ring with a taper.
8 Place the end of the shut-off valve into the end of the house pipe, with the valve handle pointing away from the wall or floor. Thread the compression nut over the shut-off valve in a counterclockwise direction until the nut is hand tight. Turn the compression nut another 3/4 turn with the wrench.
9 Thread the water supply line to the other end of the shut-off valve until it is hand tight. Turn the water supply line connection another 3/4 turn with the wrench.
10 Turn on the main water supply to the house. Turn the shut-off valve handle counterclockwise to supply water to the faucet or toilet. Check your connections at the valve for leaks and tighten the connection nuts as necessary. Turn on the circuit breaker to the hot water heater.
If you want to know more,please enter the following link:Pipe Fittings.