Question about Moen & One Handle Tub & Shower Faucet

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I have a Moen shower faucet that is six years old(copper sweated plumbing). My wife noticed water dripping profusely from the downstairs ceiling during my shower. The screws holding the face plate were very loose. I tightened the 2 screws then ran the cold water for at least five minutes. It did not leak. My wife then took a shower and it began to leak almost immediately again. I inspected the exposed drainpipe below and nothing was leaking from that area. Any ideas?

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Try removing the handle, then the face plate. With a flashlight handy, check inside the wall around the valve to see if you see any leaks. Then, try the valve by pulling the stem (may need a plier to grab this). Keep checking inside the wall. Next, try the shower, and again watch in the hole you have. You may find that the connection(s) to the valve is/are leaking, particularly at the top of the valve where the shower pipe heads up the wall. Or, it may be that the shower head's arm is leaking somewhere above. If you only see water dripping down from above, try the flashlight with a small make-up mirror to see if you can see where it's coming from. Sometimes the pressure in the shower head builds up from the flow restrictor, or the head's spray holes may need cleaning out (try soaking the head in a solution of CLR [stands for Calcium, Lime, Rust] available at most home improvement/ hardware stores). Sometimes the shower arm (the bent 1/2" diameter pipe that the shower head mounts to) isn't fastened in tightly enough. A good trick to help here is to wrap the threads with teflon tape, then apply teflon paste also. Wrap the tape clockwise around the threads so that it doesn't unwrap when you screw the pipe back into the fitting in the wall. Also, make sure the threads in the fitting in the wall are cleaned out, and don't let any debris contaminate the new teflon paste as you slip it back through the hole in the wall. If you find that the pipe out of the top of the valve is leaking, I recommend you call the plumber. He/she can likely fix it without taking the wall apart.

Posted on Sep 04, 2010

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1 Answer

Moen old shower faucets


Turn off the water to the house undo the screws. Pull out the cartridge. Bring it to any plumbing place or builder supply. Hand it to them they may hand you a new one free without a word being said. This has been the way for decades now. Install the new cartridge.

Nov 29, 2013 | Moen & One Handle Tub & Shower Faucet

1 Answer

On new Moen shower faucet, when I turn on faucet, water drips from shower also.


The faucet was installed upside down.
The shower riser pipe in the wall is to short( the distance between the faucet and shower head).
One of the biggest problems is if your shower faucet was installed with Pex pipe to the tub spout. Pex pipe will restrict the flow and force the water back up and out of the shower head.
The tub spout must be piped with at least 1/2 brass pipe nipples and fittings, or 5/8 OD. copper pipe and fittings.
Hope this helps, if you further questions please let us know.

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1 Answer

I have a moen 1 knob push-pull faucet for my tub/shower. When I push it in sometimes water continues to drip. It is probably 30 years old. Are their replacement parts for it?


The old MOEN single handle faucets like youve described usualy took a 1200 or 1225 cartridge. Both are available at most of your big home improvement stores. The answer to your question is yes MOEN parts are still avail. Hope this helps. If this advise is helpful, please give me a vote.

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1 Answer

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Not unless you had a backward plumber , If the diverter at the faucet is open for tub, then no water will go up the shower, The shower may hold enough water up there to make it look like a drip, Even if the valve was leaking all the time, it would not go up, it would come out the faucet. It only works with pressure. Unless the valve was plumbed wrong,,, Hope this helps.

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1 Answer

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Check around the the front of shower and make sure there is no place that water can seep thru such as old calk and or loose tile and around fixture molding

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Moen Shower value Does Not SHut off all the way


The heat is most likely what caused this. It probably melted some rubber or plastic component in the cartridge in the faucet. The manifold would have been quite hot 2 inches from a copper joint being sweated.

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1 Answer

Our shower has not been used for a while. Now when we turn it on


Do you have good flow if you remove the shower head, y/n if not how old is house,galvinized plumbing?? or copper plumbing. Sounds like you have a clogged valve and if so this link will be good.

Yes it is fixable and easy.To save you time because I belive you will be needing a new part from Moen I am sending you this easy link to quickly resolve your issue. Just be sure to tell Moen you are original owner of faucet and all parts are lifetime free including shipping. Go Moen!!!

http://www.moen.com/contact.cfm?location=TopNavCustomerSupport

Thanks and Please Rate jj505

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