Question about Moen & Posi-Temp Single Handle Shower Or Tub Valve
The house was built in '72. Both the shower and the tub/shower have Moen Single Handle faucets with a big round chrome plate. The tub/shower 'diverter' is not on the tub spout, but a little metal push/pull on the round plate itself. Both diverters get 'secured' by a thin brass horseshoe-like clip that slides vertically in front of the cartridge. The push/pull mechanics are now so stiff I can barely get the water on, and I have to POUND on the big round knob to turn it off... MY PROBLEM: I don't know which cartridge to buy...is it the 1200? the 1225? the 1222? In order to compare at the HomeDepot, I'd have to turn all of the water off to the house, remove the cartridge, run to the store and HOPE they have a replacement. Can you help me find the right cartridge(s)???
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Just select the option in the middle of the screen, like ( 1. Is your faucet in the Bathroom or the Kitchen?)
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Call: 1-800-BUY-MOEN (1-800-289-6636)
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Posted on Jun 17, 2009
I think you have a sick shower. Actually, what you have is a common problem that afflicts many showers each day: the dreaded shower cartridge.
A shower cartridge is about the size of a roll of nickels, and has holes and rubber washers all around it. It will take about 30 minutes to fix, but will save lots of water as a result.
If you have to pull out the knob to start the flow of water, the replacement cartridge will cost about $15. If you simply turn the knob from side to side, you have a posi-temp cartridge, which costs about $45. You can find replacement cartridges at most home centers, but if they don't have your particular type, try a plumbing supply store.
Now, let's get to the repair. First, shut off the main water supply to the house. Open a faucet to let out the water pressure, then move to the shower.
Using a small, standard screwdriver, gently pry off the shower knob cover. Under this cover is a screw that holds the knob onto the cartridge. Remove the knob.
Next, you'll find the valve body, which covered by a decorative escutcheon. Remove the escutcheon by gently pulling it straight out.
A retaining pin holds the cartridge in the shower body. This pin will have a nub sticking out of the top of the shower body. Grab a pair of pliers and pull it straight up.
The only thing left to do now is remove the actual cartridge. I recommend that you get your hands on a cartridge remover, which costs about $10. You also can try your luck with pliers, however, the cartridge- removing tool is made just for removing cartridges.
Place the larger, hollowed end of the cartridge remover into the shower body and over the old cartridge. Tighten the screw on the end of the tool. This screw fits into the hole where your shower knob was, and it locks the tool into the cartridge. When the ears of the tool are engaged with the ears of the cartridge, turn the tool (and consequently the cartridge) to break the cartridge free from years of torment. The cartridge will pull straight out.
Take the old cartridge with you to a plumbing parts store or a home center to find an exact replacement.... As you have a very old system you might be needed 1222 Posi-Temp.
Install the new cartridge simply by pushing it into the shower body with the ears in the 12-and-6 position. Push it in far enough so that when you replace the retaining pin, it slides completely into place and locks the cartridge in place.
Next, turn the water back on and make sure there are no leaks. Replace the escutcheon and the handle.
Now, test to make sure that the hot water side is hot and the cold water side is cold. All you need to do is remove the shower knob, take a pair of pliers and rotate the stem (the part of the cartridge that the shower knob screws into) 180 degrees. The cartridge stays put, but the stem is free to rotate. It's the knob and the escutcheon that restrict the movement of the stem.
Best of luck!!
Posted on Jun 17, 2009
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Posted on Jan 02, 2017
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