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No warm water in showers

I just moved into a house that has two shower with the same fixture, a single rotating nob that, I assume, is cold on the right warm in the meiddle then hot on the left.
On one shower, there is only a trickle of cold water on the right, then hotter and hotter water as I turn it left.
On the other shower there is lots of cold water on the right, lots of hot water on the left and absolutely no water whatsoever when it's pointed straight up?  Do I have to proken fixtures or is there a larger plumbing issue involved here?

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  • TMQuinn Feb 08, 2009

    I do have hard water though, I live in Las Vegas. I've attached a photo and I'd like to fix it myself, but I couldn't even figure how to get the plastic knob off...



  • Thomas F. Schneider May 11, 2010

    I have been thinkng about you problem this afternoon and if you have hard water I believe that the passages are blocked. The one that has no flow in the middle position may have the internal part installed upside down. Turn off the water, take them apart and see what is happenng.  Most parts like that are made of plastic and are not hard to find or replace.

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  • 34 Answers

Pleae do not follow smthbrother's advice. It is just a simple problem with the valves, nothing to stress about. I am a plumber by trade and see things like this all the time. If you post the name of a pic of the valves I can tell you what you need to buy and how to fix them if youwant to take this on. If you feel this is something you might not want to I can figure a price up to repair it..this will give you an Idea of what it should cost when you have someone come out to repair it so you dont get taken. Repost if you need anything or you want me to walk you threw it.

Posted on Feb 08, 2009

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Posted on Jan 02, 2017

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plz vote and rate my advice thanx

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