Installation of pressure equalization/shut-off valves for washbasins
It's common to install shut-off valves on the water lines for a sink, as they provide an easy way to shut off the water if you need to repair or replace the faucet. The 1 cm thick copper pipes usually end somewhere under the sink, and you have the choice of installing valves with solder joints or compression fittings. The latter option avoids the use of solder and torches, and is safer and easier. The work does not require many tools or additional material and can be done in a few minutes.
Remove any burrs from the end of the water pipe with a file.
Unpack the valve from its container. Unscrew the coupling nut and remove the brass compression ring from inside.
Slide a rosette onto the pipe and press it against the wall. The rosette covers the gap between the pipe and the wall.
Place the compression nut on the pipe with the threaded side facing out. Place the brass compression ring around the end of the pipe. Push it back about 4 cm from the end of the pipe.
Place the valve on the end of the pipe and slide the nut forward to meet it. Hold the valve while turning the nut counterclockwise to tighten it onto the valve.
Hold the valve with adjustable pliers when you can no longer turn the nut by hand. Do not turn the valve, but hold it in the orientation you need to connect it to the faucet hose.
Turn off the valve when you have tightened the nut and turn on the water. Tighten the nut more firmly if water sprays from the faucet. Do not tighten the nut if only one or two drops drip from the faucet, as this will probably stop in a few hours.
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