Question about California Faucets 1/2" Thermostatic Valve with Rectangular Trim Plate....

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Thermostatic Valve Shuts Down on Full Volume

Our shower's Altman's thermostatic valve's performance has changed.  Originally, you could turn it fully on.  Now, after the water gets to the temperature it's set for, it shudders and the water stops flowing.  It will start again, but not in the fully on position.  Solution...besides don't turn it on fully?

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I would check the strainers/filters becuase clogged strainers can lead to decrreased water pressure and therefore improer mixing... there may be strainers at the supply valves, at the intake to the faucet and the cartridge...

Posted on Jan 05, 2009

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I have a Jalco 3/4" thermostatic mixing valve that I just installed to relace one that leaked. The water comes out fine but I can't get it to mix when I turn the knob -- it either comes out all cold or all hot. Solution?

Posted on Jan 21, 2010

  • nisivaco Jan 24, 2010

    I called the shop that I bought the mixing valve from (The Chicago Faucet Shoppe) and they told me the same thing. I removed the mixing valve, cleaned it and reinstalled it. It still didn't work. I went back to The Faucet Shoppe and exchanged the mixing valve (even though the very knowledgeable salesperson said that the problem wasn't the valve) and installed it. It still doesn't work. Is it possible that it is incompatable with my shower tower or is there somethign else I should try?

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you have to first turn off the water to the whole house and open a faucet upstairs and downstairs to properly drain down your pipes (less messy).

Take the handle off with an allen key (hex). Undo the 2 screws that hold the faceplate on and it will slide off with the sleave. You will find a brass valve body with a lock ring which screws off by hand. It may be tight for half a turn and should then spin off. If it remains tight you still have pressure behind it and are about to get wet (go make sure the water is off and drained). The cartrgidge should just slide out, if tight give it a turn and it will pop out. Take it to any hardware store and get a new one (many stores give replacements for free if you give them the cartridge). The cartridge will be set to a low temp for safety and you may want it to be hotter. The adjustment is on the front of the valve. Look for the little notches on top of the cartridge to adjust.

Also note that one side of the cartridge says "hot side" on it. Take a look in the valve body for debrise that may cause the same problem. Now just replace all the parts and enjoy.

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Kindly

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Hansgrohe concealed thermostatic mixer ref no 1537418


check for sediment in your valve body... sometimes sediment can build up particularly in hot water pipes and that can cause the pressure balancing function of the valve to limit total hot water and therefore you cant get it hot enough... here is a link to what I think is the proper valve and the instructions for installing it... you'll want to follow the instructions for flushing and pressure testing... if you have good pressure at the thermo body then you might try adjusting the hot limit stop also covered in the document linked below...

http://www.hansgrohe-usa.com/JP/hrgh0264.pdf

Hope theat helps...



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Kind Regards,
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