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I'm running a water line for a refrigerator ice maker. Currently it seems like the cleanest way to do this will be to tap into a cold water line in the crawlspace under where the fridge goes and come up through the floor behind the fridge.

I'd like to find a fitting to anchor the pipe where it comes through the floor. Is there such a thing as a solder floor flange, or another way of doing this with common (e.g., available at Home Depot or the like) parts?

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    Normally a small faucet is added in the wall with a plastic box. On the quick jobs I just drill a hole for the copper 1/4" tube and leave a 18-24" coil so it doesn't get kinked at the floor – Ed Beal Feb 28 '16 at 21:17
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    The coil mentioned by Ed is often essential to allow for a refrigerator to be pulled out from its alcove for servicing, cleaning or replacement. – Michael Karas Feb 29 '16 at 1:25
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This is an Drop Elbow (upside down for your use), most commonly used for wall penetrations...showerhead arms, tub faucets, washing machine supplies, etc. I don't know of any other types that you'd actually screw to the floor & haven't ever seen one.

Presuming your hole is tight to the wall or baseboard, you might be able to attach this to your wall or baseboard with either a direct connect flexible line or a single compression fitting. Anything more would likely get crushed by the fridge. But a screw in elbow fitting to convert to vertical may work for your situation. However, elevating the fridge's tube connection that's already set-out much may put it in threat of being crushed, so be careful & test it out gently.

DropElbow

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Male solder-on or sweat-on. My preferred floor lock-in fitting. Threads are exposed for thread inspection, easy Teflon taping, more precise leak detection, female reducing adapters are more common & flexible lines come with direct attachment ends.

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Female solder-on or sweat-on. Nothing really wrong with this. I just don't find much of a selection to accommodate it in the big stores.

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All three would be first soldered onto the pipe you drop in the floor. It's ill-advised to feed a pipe up & then later solder on a fitting that's close to a wall, especially when so easily avoidable.

Your pipe or elbow beneath the floor would prevent or limit vertical movement & a hole drilled for the pipe diameter instead of for the fitting's shoulder would raise the fitting for easier future flexible line replacements & stop downward movement to avoid stressing of the piping beneath the floor.

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