Question about Grohe Grohtherm Thermostatic Rough-In Valve 3/4'' Valve - 34125000

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I have a grohe 34122 1/2" valve and two different shower heads. Do I need a diverter or two volume controls? Anything else?? Thanks. I want to be able to run one or both heads.

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Install a shower head diverter, it is a push pull valve that goes on the shower arm before the shower head

Posted on Jun 27, 2009

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My contractor installed a 4 port diverter. The hot and cold are ok, but when I turn the shower on, the flow starts in the hand held shower head and not the main shower head. According to Grohe, whichever...


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I'd like to install 1 shower had and one hand held shower. What do I need to have ?


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there should be a flat head screw on the mixing valve turn the water on and turn it to the desired temp,, it is letting to much cold water in , if this does not work replace the mising valve

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Installation problem: Grohmix shower valve 1 1/2'' extension


This is what you should have... Grohe Grohmix Thermostat Valve & Trim - 34436
  • Paraffin cartridge
  • Lever volume control
  • Grip ring temperature control
  • 1/2" NPT female connections
  • Service stops
  • Includes rough-in valve and trim
  • Integrated temperature and volume control
  • Requires Twin Ell (03 671) for shower/tub combinations with diverter spout Note:
  • Requires Twin Ell (03 671) for shower/tub combinations with diverter spout
  • Grohe Grohmix Thermostat Valve & Trim - 34436

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    Grohe Thermostatic Valve


    the temp, control valve is getting to hot!!! there for only let so much hot water go thru, did you take the inner parts out when soldering this in, if not you might have damaged it, and if so need to replace the cartdrige

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