Chronic Delta Faucet Leak

bobby_tJanuary 10, 2014

Two handle Delta bathroom faucet (25901LF) leaks chronically. I have replaced the stem assembly twice but the spout leak returns within a week or so. I can temporarily stop it by opening and closing the faucet but it always returns. The seat against which the stem assembly rests seems smooth and I've flushed the whole thing several times. While it isn't a world class crisis, I'm getting tired to replacing stem assemblies. Any ideas??

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Have you asked DELTA customer service?

    Bookmark   January 10, 2014 at 11:08AM
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They are very pleasant -- and keep sending me replacement cartridges. That isn't solving the problem and, in any case, I can't believe that I have gotten two sets of bad replacement cartridges in a row. No, I think there is something else going on . . .

    Bookmark   January 10, 2014 at 1:39PM
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Get a new faucet.

    Bookmark   January 10, 2014 at 2:15PM
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Faucet leaks can be caused by thermal expansion problems. If you are on a water system and you have a pressure reducing valve (PRV) there should be a thermal expansion tank installed proximate to the water heater.

If the thermal expansion tank loses it's air pressure charge or the bladder in it has a leak then pressure spikes can cause faucet leaks.

Best thing to do is get a pressure gauge with a tattletale needle and see if it registers spikes over 70 psi. If it does then check the tank.

You can learn about thermal expansion by clicking here

    Bookmark   January 10, 2014 at 5:00PM
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Thank you for the suggestion; that is something about which I had never thought. Our place does not have a thermal expansion tank and when I was talking about this with my wife she FINALLY got around to telling me that when she opens the hot water side of the faucet there is often what sounds like a spurt of air.

    Bookmark   January 11, 2014 at 8:28AM
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Hi, Did you replace the seats? They are spring loaded rubber cups located at the bottom of the valve. The cartridge rides on top of them. Use a small screwdriver or nail to remove them. The older seats have longer springs than the newer models. If you can't get a kit with the longer springs use the old ones.
Good Luck Woodbutcher

    Bookmark   January 19, 2014 at 5:34PM
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