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Temperature problem The temperature range between cold and hot is very narrow. How can I adjust this valve to get a broader range from cold to warm to hot?

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  • govsmart Mar 07, 2009

    this is a Kohler K-306-KS Valve

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There is no adjustment.. if it worked well in the past you need to replace the cartridge as that controls everything.

Posted on Mar 09, 2009

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How do I adjust the faucet to get the water hotter?


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I do not have a mixing valve on my boiler, will this create mixing problems? Sometimes it mixes ok. other times it is all hot or cold. I replaced the cartridge once. This system is only a couple of months...


If your posi-temp valve is working correctly this should not be a problem. Does your hot water temp. ever get extremly hot or just warmer? The way the posi-temp cartridge is designed if you have a large drop jn cold water pressure then the inside piston is supposed to slide to the hot side restricting the flow of hot water to a safe level.If the pressure on the hot side drops suddenly then the valve is supposed to restrict cold water flow.
If the temperature gets to a unsafe level you can adjust maximum hot setting by removing the handle. There is a allen head set screw on the bottom of the handle. Loosen screw and pull handle off. On the newer models pull off chrome sleeve from around valve body and slide outer geared disc off enough to seperate from inner gear. There are markings on disc with arrow pointing to h. or c. Adjust outer disc in the direction you want to adjust and slide it back so that gears engage. Each tooth on gears will change water temp. about2-3 degrees.Try it and readjust till you get the hot set point you want. One other thing you could do is install a small pressure tank on cold water line to compensate for pressure changes. Hope yhis helps you. Thanks

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1 Answer

My taps are new. When the handle is turned full hot , the water is only tepid. I think the anti scald feature is letting too much cold water pass. Please advise


there is a splined adjustment just under the handle of the 3175.

you need to remove the handle, usually held on with an allen screw
once you remove the handle, there will be a black "stop" held on with a screw, remove that, but remember its position.

once that is off you can adjust the temperature. there will be 2 white pieces, one has splines, you can move this counter clockwise one or two notches at a time untill you reach your desired termp.
be careful not to go too much, even though these are an anti scald valve, you are letting more hot water through it.

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Only warm water from the tub/shower


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Faucet may be bad also the safety stop will alow you to change water temp it can be tricky to adjust water temp.

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Hansgrohe 06358620 shower not hot enough


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Not enough hot water, has to do with a shower valve


Hello, first if any water supply hot or cold is turned off, you will experience trickling as you mention. You must have both cold and hot in order to adjust the temperature on your valve. if you had a plumber intall this unit you should ask him to adjust it. Otherwise here is how:
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Shower Handle


You do not mention what make faucet we are talking about.

Moen makes two styles of Shower valves
The one that you discribe is called a Posi-Temp the goes from off to cold and to hot as you turn the valve counter clockwise.
The pressure should be greater mid range ans the cold and hot water mix but generally not noticeable.

A Moentrol valve is that should have been iinstalled in order to have greater control on temp and pressure.
Moentrols work but turning the valve clockwise for cole and counter clockwise for hot and pulling out on the valve for the water to come on.
sanray

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Shower not hot


There is a handle limit stop under the handle. Remove the handle with an allen wrench and you should see a plastic piece with a tab on it fit into the assembly. Remove it and rotate it slightly to allow more travel in the handle and reinsert. You will have to test it to see if it allows enough hot water to mix in. If it is still not warm enough repeat as needed. Once you have the water at a comfortable temperature reinstall the handle and enjoy.

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