Small valve doesn't close

Old 03-07-20, 08:11 AM
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Needle valve doesn't close

I am a newbie at this. Attached is a picture of the needle valve set-up that I found in my recently purchased house:

It controls the water flow into my pool. The problem is that even when I close the valve all the way, the water continues to run through that plastic pipe. I need to stop that water flow. Is that valve broken or valves like that are not designed to shut off the water all the way? I found online that needle valves are not designed to work with plastic tubing. What do you suggest I should do be able to shut off the water that runs through that plastic tube?

Last edited by PJmax; 03-07-20 at 08:39 AM. Reason: linked image
Old 03-07-20, 09:09 AM
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That's called a saddle valve. They are absolute crap. That valve is installed by bolting on the pipe and the center pin punctures the pipe which means when you remove it there will be a hole in the pipe.

It would be a good idea to replace that with a brass ball valve.

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Old 03-07-20, 10:00 AM
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I found online that needle valves are not designed to work with plastic tubing.
I haven't checked recently, but there used to be kits with the saddle valve and plastic tubing sold to connect icemakers. The plastic tubing worked well for maybe 7 or 8 years, but eventually just disintegrated leaving a big unexpected flood and usually some water damage as well..
Old 03-08-20, 07:40 AM
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Those saddle valves are notoriously unreliable for turning off after a few years. Many locales no longer allow them - though they are still used often.

While Pete's suggestion of a proper valve is the best solution, in a pinch, you could just cap the end of the plastic pipe with a valve. Something like this could work:
Old 03-08-20, 07:56 AM
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Depending on the size you may be able to find a cap for it.
I am assuming that you want it off all the time.

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