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Thread: Shower Valves

  1. #1
    DIY Junior Member
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    Jul 2008
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    Santa Cruz, CA
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    9

    Default Shower Valves

    Hi, new DIY. Would like some info about shower valves. I've torn out a fiberglass tub/shower and changing to walk in shower. I'm going to change from two handle control to a one handle control. There are a lot of brands and styles to choose from. I need some help in making a choice. The new plumbing will be copper pipe. The house is about 35 years old. I've heard and read so many pro's and con's about makes and models of valves, maybe just close my eyes and grab.

  2. #2
    Retired Defense Industry Engineer jadnashua's Avatar
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    Sep 2004
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    New England
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    21,405

    Default

    Delta 1700 series and the (I think) 1500 series valve bodies have gotten some good comments from the plumbers. At least one of the Delta units can use either a pressure balanced or thermostatically controlled cartridge; I'm not up on all the details.

    I've got a Grohe thermostatically controlled valve in my house...I put a pressure balanced one in my mother's (she didn't want a thermostatically controlled one - too complicated). So far, I've had good luck.
    Jim DeBruycker
    Important note - I'm not a pro
    Retired Defense Industry Engineer; Schluter 2.5-day Workshop Completed 2013, 2014

  3. #3
    DIY Junior Member Johnny Drama's Avatar
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    Jun 2008
    Location
    VA
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    15

    Default Shower valve replacement

    Well, after ripping out my walls doing a remodel on the bathroom, I've decided it would be wise to update the shower valve. The only issue is that the feed lines are plastic with everything else being sweated copper. The install is the original 20 years old), and I'm not sure what they used to secure the plastic feed lines to the copper lines, or how to replace it. I've attached a picture of what I'm talking about.

    All the new valves I've looked at also appear to use a threaded fitting now. I'm not sure how to move forward with this. Any advice is welcome.

    Thanks in advance.
    Attached Images Attached Images  

  4. #4
    Moderator & Master Plumber hj's Avatar
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    Aug 2004
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    Cave Creek, Arizona
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    25,653

    Default Pb

    I hate to be the bearer of bad tidings, but your plastic pipes are polybutylene, which are the "bad" ones. Unfortunately, or fortunately depending on how lucky you feel, 20 years was too long for the class action replacement, but maybe you will not have any problem with them. The Delta universal body with a 1700 trim, or 1700T if you want thermostatic, is one of the best valves, in my opinion.

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