Noisy shower/bath mixer unit

SOURCE: shower too hot

Hi sallypenn

I'm Harvey the Master Plumber.

Your question seems to be how to adjust the temperature of a shower valve?

I'm going to assume this is a single handle faucet. Most are adjustable under the handle. This is the responsibility of the installer but sometimes they forget and you can't get them back. Anyway this requires a little mechanical ability and a few tools.
First be sure to turn off the water to the faucet, then remove the handle (allen wrench or small screw driver). Most have a temp. adjustment ring right there. Simply pull out, rotate and replace. With some you have to remove the sleeve or bonnet under the handle to expose the adjustment fitting. Reasemble and turn on. It is not uncommon to have to do this two or three times before the customer is happy with the setting. The adjustment fittings usually don't have tenp. setting numbers to go by so it might take a few tries.

Feel free contact me again!
Please give me a rating here at fixya.com before you sign off
Thank you,
Harvey your Master Plumber

SOURCE: triton electric shower runs cold

hi it sounds as though the thermostat has gone on top of the can assembly, or moreover it has scaled up & the element needs replacing, if thats the case your better off buying a new unit as the cost of the can assembly & the fitting it will be nearly as much, plus witha new unit you'll be getting a 2 yr guarantee?
Just a thought!

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

SOURCE: shower temperature too hot

Shower valves that have anti-scald features are renowned for this problem. Usually it is caused by not being used regularly. It can be repaired usually without replacing the valve, but you will have to dissemble it, clean, and use some plumbers grease to reassemble it. It should work fine after this. If it still does not work you will need to replace the cartridge.

SOURCE: adjusting the scauld guard on a shower mixer valve

Uue a 1/8" allen wrench to remove handle to access the dial that set's the mixture of water.Remember or mark where it is and remove and reinsert counter clockwise about a 1/4 turn to start to you reach desired temperature setting. Be careful not to set it at a hot enough setting to burn you.
Once dial in place slide handle on and turn on to check water temperature.