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    Kharris485's Avatar
    Kharris485 Posts: 8, Reputation: 1
    New Member
    		  
    #1

    Aug 14, 2013, 10:06 PM
    Shower low pressure
    Howdy,
    I'm getting low pressure from my shower, we have a Kohler K-670-ks valve body(see link).

    http://www.efaucets.com/f/kohler-k-670-ks-na.shtml

    The valve body has two stops on it. Each stop has a 3/8" square drive. I'm wondering if I turn these stops, will they allow more or less water through. Kohler has voluntarily sent me a new thermostatic valve, under warranty. The box store folks and portions of the Internet inform me that changing the thermostatic valve should take care of the low pressure problem. Still, those stops won't let me sleep! I want to turn them! I got to turn them!
    Dave
    massplumber2008's Avatar
    massplumber2008 Posts: 12,832, Reputation: 1212
    Senior Plumbing Expert
    		  
    #2

    Aug 15, 2013, 02:01 PM
    Hi Dave

    Turning the integral stops INWARD will open the stops full open... turning outward shuts water flow off... ;)

    So get this monkey off your back and turn away, turn away!

    If that fails to fix the issue you can try removing the shower head and running water without the shower head in place and if you get superior volume/pressure you can consider cleaning the head OR removing the flow restrictor in the head... may also resolve the issue.

    Otherwise, replacing the thermostatic valve mechanism may be required, but I'd start at all of the above first!

    Good luck!

    Mark
    Kharris485's Avatar
    Kharris485 Posts: 8, Reputation: 1
    New Member
    		  
    #3

    Aug 15, 2013, 11:26 PM
    Thanks,
    Will try all of the above, thermostatic valve is free so it'll go in for good measure.
    Handyman2007's Avatar
    Handyman2007 Posts: 988, Reputation: 73
    Senior Member
    		  
    #4

    Aug 16, 2013, 05:24 AM
    Why not make the adjustments before changing the valve. If the adjustments work then put the valve somewhere until us actually need it for a repair.
    Kharris485's Avatar
    Kharris485 Posts: 8, Reputation: 1
    New Member
    		  
    #5

    Aug 16, 2013, 12:00 PM
    Ok!
    Kharris485's Avatar
    Kharris485 Posts: 8, Reputation: 1
    New Member
    		  
    #6

    Aug 18, 2013, 08:31 PM
    Removed the little oRing in the shower head and that took care of the low pressure problem. Now we can't get cold water out of the shower no matter which way I turn the stops. Replaced the Thermostatic valve and still not enough cold water. Stuck again.
    massplumber2008's Avatar
    massplumber2008 Posts: 12,832, Reputation: 1212
    Senior Plumbing Expert
    		  
    #7

    Aug 19, 2013, 05:44 AM
    I'm going to guess that the temperature limiting device needs to be adjusted. Check out this link for information on your valve and how to adjust the temperature setting:

    http://www.us.kohler.com/onlinecatal.../1041158_5.pdf

    Scroll down to page 6 and 7 for hot water adjustment (which should restore cold water flow).

    Let me know how you make out, OK?

    Mark
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