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enter image description here

Pictured here is what I thought was a shower valve shutoff screw. There is another one on the other side of the valve. I turned the screws clockwise to tighten and shut off the water so I could replace the cartridge; however, they just kept turning without tightening. Are these not shower valve shutoff screws? Any advice?

Thanks!

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  • Do you know the valve's make/model? Hopefully the manufacturer has some info on exactly what parts are where, and how to use them
    – Xen2050
    Dec 26, 2023 at 15:56

1 Answer 1

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Try turning the slots so they are vertical to turn off the water to the cartridge. That's how mine work. Then turn the slots horizontal to turn water back on.

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    In other words, those service stops are "ball valves" or something similar, and do not tighten.
    – kreemoweet
    Dec 26, 2023 at 11:43

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