What's That Knob Under My Sink?

27 April 2025 1 answer
Asked by CuriousCat73
I found this knob on a copper pipe under my sink, and I'm not sure what it is. Could it be a shut-off valve that's missing its handle? Here's a picture for reference: https://imgur.com/a/O4sivsA.

Answers

DIYer89
Yeah, that looks like a ball valve without a handle. It's possible it was removed on purpose to prevent it from getting turned off accidentally when things are tossed under the sink. You can usually find replacement handles for around $15—just make sure to get a set with various sizes. No need to attach it permanently if you just keep it handy.

HandleHunter: Haha, or maybe your sink is haunted! But seriously, that sounds about right.

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