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    keynow77's Avatar
    keynow77 Posts: 2, Reputation: 1
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    #1

    Jan 31, 2010, 01:02 PM
    Cutting into a half inch copper tube to install a compression shutoff valve
    What length do I cut directly into a 1/2 inch copper tubing to install a compression shut off valve.
    KISS's Avatar
    KISS Posts: 12,510, Reputation: 839
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    #2

    Jan 31, 2010, 01:09 PM

    It depends on the length of the valve and how much play you have in the pipes. The tubing needs to seat at the bottom of the fitting.
    massplumber2008's Avatar
    massplumber2008 Posts: 12,832, Reputation: 1212
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    #3

    Jan 31, 2010, 01:13 PM
    To install a compression shutoff you will need a minimum of 1 inch of copper exposed. If you plan to install a chrome cover behind the shutoff you will need a minimum of 1.25" exposed copper pipe.

    MARK
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