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My American Standard R120 shower valve has excellent pressure on the cold side, no pressure on the hot side.

I have enough pressure on the cold side to get water to come out of the shower head. On the hot side there is not enough pressure to get the shower head to work.

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  • 12 Answers

Could be a chunk of scale in the valve. Need to turn off water supply and take valve apart. If nothing is found, turn water supply on to give line a 'quick' flush and turn back off. If this does not help, you probably have an obstruction somewhere in the hot supply line and a plumber may be needed unless you are handy. Good luck.

Posted on Jan 01, 2014

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  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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  • 374 Answers

SOURCE: Not enough hot water

Some higher end models do have an adjustment that is behind the face plate. You would have to remove the handle and the screws in the faceplate to expose them. If you have adjustments they will be located on the brass valve body facing you. You will need a flashlight and a flathead screwdriver to make the adjustment. If your model is not equipped with adjustments you could have a faulty valve stem. The stem is comprised of a rubber band like gasket that separates port holes into which the waters flow. There could be some piece of trash blocking the port not allowing adequate water from the hot side into the valve.Some valves stems are also able to be installed upside down causing the same issue as the ports do not rotate fully to allow adequate supply. However you say that you have adequate pressure on the hot side but not warm enough. There is another possibility also based on the way the shower supply was plumbed but there is no need to go into this unless this does not resolve your issue. I hope this is of assistance and thanks for using Fix Ya. Please let me know if I can be of further assistance.

Posted on Oct 21, 2008

  • 14 Answers

SOURCE: moen single handle valve tub/shower

The Moen Posi-Temp Valve is a pressure balanced valve and when not used for long periods of time they can stick causing only cold or hot water to pass through the valve.
A New Posi-temp cartridges can be purchased at most plumbing supply houses or big box outlets such as Lowes or Home Depot.
As long as you had cold water before, a new cartridge will solve the problem. In the future it would be wise to occassionally operate the valve at least a couple of times a month in order to keep the pressure assembly from becoming lodged in position. Just follow the instructions included with the new cartridge on the proper removal of the old cartridge and the installation of the new cartridge. a little silicone grease inside of the valve before installing the new cartridge will also help.
Be sure that there is no particles of the old cartridge left in the valve.
sanray

Posted on Dec 27, 2008

jeff_drakesr
  • 155 Answers

SOURCE: no cold water from Moen 2253 tub/shower valve,

Here is a quick check to see if the cartridge may be at fault allowing the cold and hot to mix. Turn off the hot water supply, with hot water supply off turn faucet on. Turn to the hot and cold sides, If you have only cold water then your faucet cartridge is at fault or the cartridge housing is worn. Shut all supply valves and remove cartridge and inspect housing for signs of wear. If wear is visible a new shower valve is needes. If none visible replace cartridge. I have included a link of a PDF file an exploded parts list. I hope this helps in solving your problem. Please rate if the answer helps in any way. Good Luck and have a great week. Jeff

Posted on Apr 05, 2010

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1 Answer

No hot water pressure


These types faucets have a what is called an anti scald valve build into them, it is required by law, it is either defective or out of adjustment, contact a local hardware store for more detailed info.

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Ever since I had This American Standard Williamburg shower control valve I get a terrible water hammer at comfort tempetures. My friend the plumber who installed it pulled the Pressure balance valve out...


NO DONT replace anything > You have what id call water hammer. This happends when water gets in the air chambers, Air chambers are nothing more than a 1 foot or 2 foot long section of pipe with a cap on it. When its working air gets trapped in the pipe and you can compress air but not water, so if the air is gone BANG BANG goes the pipe.

takes 10 mins to fix. turn off the water to the house out side. open every faucet in the house and the hose fauects out side. wait 5 mins and then close everything and turn on the water. You will see ait come out of the faucets it will stop after just a momnet or two.

That should do it. check your tub shower valve and it will work fine

Thanks for asking us to help

Hope this worked for you Tom

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I imagine you have the installation instructions since you just installed it. Your new shower handle has a hot limit safety stop. You can set this with a flat blade screwdriver. The safety stop is the red ring in the handle and all you need to do is pry the ring forward with the screw driver and rotate it clockwise to increase your hot water.

Hope this helps. If it does, I'd appreciate your vote. Thanks,

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I have a one handle shower/tub faucet, and when you run straight hot water (to preheat for example) the water shuts itself off. Lever is still in the lifted/on position however. Cold is fine, even warm...


If this is a newer valve what is probably happening is the valve is a scald guard valve and is shuting itself off when it senses no pressure on the cold side. I don't have a lot of experience with am. std. valves but I'm sure you can get instruction on line to set heat setting on valve higher. Thank you.

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Water will not flow through on american standard with pressure balance. Some hot water came out with low pressure then stopped and now nothing will flow.


I just spent a week wrestling with a similar problem, and I'm posting in an attempt to save someone else an ulcer. Using a Colony single-handle valve, the temperature got so we couldn't control it. Either all hot or all cold. I called A.S. and they sent a new pressure balancing cartridge and new valve cartridge. Replaced both and then there was no water at all coming out of the shower head. Tried every possible combination of old and new parts, flushed pipes, etc. Finally took the shower head off and found it completely clogged with debris. It was a mix of sediment and the white grease that was in the new cartridges, which must have been displaced when I started messing with it. And it clogged it all at once (no flow problems before all of this). Works fine now!

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Not enough hot water in the shower even if I turn the handle all


Your valve has an anti-scald feature which automatically adjusts the water temp if cold water is diverted to another location, e.g., a flushed toilet, washing machine filling, etc. Most valves have an adjustment screw to allow you to set the temp. Since each manufacturer is different you'll need the manual or contact the manufacturers support. BTW, these anti-scald valves are being added to building codes in many parts of the U.S.

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Remove the handle,and all the trim rings,and the cartridge cover. take a flat head screwdriver and use it to lift
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this just stops the handle from turning to full hot.

Once you have the red ring lifted up, notice the numbers and the pointer
on the ring, numbers are on the fixture,

O= hottest 7=cold

See what the ring pointer is set to now, and move it half, before you put this back together, just set the handle on the unit and run the water to see if its to hot or not enough. Once you have found what is the best setting, then replace all covers and trim, handle.

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