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Troubleshoot A Sink Leak


angle stopIf you have a leak on the water supply line heading to a faucet (or a toilet), you need to do a little inspection. This is a very common repair...a slow drip coming from an angle valve or water supply line. Just because the water is dripping off of the valve doesn't necessarily mean the leak is at the valve. The valve just happens to be the lowest (and last) fitting before the direction changes, and so the water drips from the valve.

You need to check the length of the water supply line for any wetness. It may be that the faucet is leaking and the water is traveling down the supply line and finally dripping off of the valve. An easy way to determine wetness is to get some toilet paper and touch the water line with it. It will pick up any wetness and clue you in as to where the leak is originating.

I would start high near the faucet (or toilet) and work downward. The most likely areas are going to be where you have water connections. For example, where the angle valve attaches to the pipe in the wall, where the supply line attaches to the angle valve, and where the faucet attaches to the supply line.

Once you have found the cause of the problem, the repair of these items are all easy. If the supply line is corroded, you may have to replace it, but you can first try a new rubber washer. If the angle stop is dripping, you may have to replace it, but first try to tighten the nut just underneath the handle. You might even need to replace the packing underneath the nut to stop the leak.

Here is an article on repairing a drain leak at a kitchen sink.


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