Kohler 30 year old single handle shower valve - cold water only
I sand paper cleaned the cold and hot water valves. Each valve slides freely in the plastic housing. If I rotate the valve assembly 180 degrees only the hot water works. What else could cause one side not work?
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Your whole house is likely plumbed wrong so that it is impossible to have equal pressures of both hot and cold at your shower. If you had your home plumbed with aquapex using a radiator for the hot water and a radiator for the cold water and have the radiators fed with a 1 inch line you can have close to perfect pressures.
u need to adjust the scald protector all single handle units are shipped in cold position for safety reasons if have paper work for handle it explains how to adjust if not unscrew handle and remove on handle / valve stem will see a red and a blue plastic clips pull back clips and turn slightly and push back do this till desired hot and cold setting are to your liking replace handle and your done
Moen and all shower valve manufacturers follow american federal guidelines. Hold the unit in your hand with the handle facing you - the left side is the hot water inlet and the right side is the cold water inlet.
Remove handle to gain acess to the temperature limit stop. Remove handle and pull out handle adapter kit and next there is a dail that can be adjusted to control the water to balance the temp. It could have been installed wrong, pay attention to where it is now and pull it back to it disengages out of the stem and move it counter clockwise a little and reinstall. Put handle on and test water for correct movement.
Go to link below for a part's diagram if needed.
adjust ur anti scold the setting is set to low when single handle shower units are shipped they are set in cold mode for safety ur install/instructional paperwork explains such and also advises on how to adjust---remove handle and on shaft will see a blue and red plastic clips that are adjustable slide towards u and move red for more hot water test water continue till comfort level is reached for hot water
It's likely that you have some sediment that has accumulated in the cold water valve and has clogged it. The model number you have cited above is only for the trim (rather than for the valves behind it). Assuming that you have a Price Pfister valve, they don't have built in filters, so you're probably going to have to either clean or replace the valve.
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.