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Moen Kitchen tap 87787 water pressure is extremely low

The water pressure is extremely low following installation. I have removed the lines and checked for any blockages. I have used both compressed air and water from a hose (at a relatively high pressure) to test the various parts. The part which appears to have the problem is under the faucet. There appears to be a valve that does not allow much water through. Is this a common problem? Or has something become lodged in the valve? Any ideas??

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Yes it is very common more so on hot side, the water stops or shutoffs can become plugged with hard water deposits and calcium build up. Shut off main water, unscrew supply lines from shut offs under sink to see if this is indeed the problem.

Posted on Oct 04, 2009

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