This 3/4 in. Brass PEX Barb x Barb Ball Valve will be my main shut off valve in my house. It will be in an interior wall behind a wall panel.

How can I secure this valve within the wall so it doesn't move around when the valve is turned on & off?

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  • what the hell is that guy doing in the photo? He is holding backwards. it goes with the flat part out.
    – Alaska Man
    Mar 3, 2018 at 20:51

2 Answers 2


Generally you would just secure the PEX with some pipe clams near the valve and that would be good enough. The valve just hangs there in mine and I usually grab a pipe with one hand when I turn it.

  • This seems avoidably prone to stressing the barb fitting attachment to the PEX. Maybe not an issue for valves which are rarely used. Mar 3, 2018 at 20:23
  • If you're worried about the valve shifting you could brace it with wood alongside.
    – bombcar
    Mar 4, 2018 at 4:50

You can use a "drop-ear" valve, which would look like this:

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The "ears" are meant for mounting the valve with screws.

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