Question about Kohler K-T12021-4-CP Fairfax Rite-Temp Pressure-Balancing Valve Trim K-T12021-4-BN. Shower Faucets. Fairfax Rite-Temp Pressure-Balancing Valve Trim K-T12021-4-BN. Metal construction. Brass valve body. Rite-Temp pressure-balancing diaphragm design. High-temp
Difficult or unable to find the right water temperature. I notice that when the shower is turned off, the handle is horizontal and not vertical as it should be.
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Posted on Jan 02, 2017
My best guess is the supply valve for the hot side isn't open all the way. This valve is right on the valve and is accessed by taking off the front cover plate. This would still allow the pressure balancing valve to let water through but then you would have a small flow on the hot side.
If this isn't it then then cartridge is bad.
Please rate this response and good Luck,, phil
Posted on Dec 31, 2008
ever since the pressure balancing regulations came out for shower valves, they have went from simple to very complicated devices. sounds as if some foreign material caused the valve to stop working. that valve is quit difficult to reassemble correctly because there is only one way it works and can be assemmbled many ways that do not work concerning alignment of the ports. if you dissassemble it and check that all the moving parts are functioning in the balancing cartridge you can then look closely at the alignment of the ports on the cartridge that the handle is connected to. understanding how the port align as the handle is turned should assist you in assembling it correctly......hope this helps.
Posted on Jan 23, 2009
Try draining the system and apply air pressure (min 30psi) to each faucet. Open other hot water faucets to allow pressure to vent. Next try draining and cleaning the hot water tank.
Posted on Oct 24, 2009
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