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How to identify hot & cold stub outs??

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Sparky

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Dec 26, 2006, 7:38:48 PM12/26/06
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I had a plumber do some water line rough-in a few years ago. Now I want
to connect a sink. Anyway - I'm having a hard time figuring out which
is the hot and which is the cold. One has a square cap - the other is
bullet shaped. Should I assume the square is the hot? Or the other way
around?? I tried testing both lines with the existing H/C water lines
with an ohm-meter to see what was connected to what - but it's all
grounded at the HW heater - so my result was moot.

ANY HELP HERE??
If someone could let me know - it'd be great. Searching by google is
drawing blanks..!

thanks
Jonathan

Mike Grooms

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Dec 27, 2006, 6:05:21 AM12/27/06
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Sparky,

The one on the right is cold, probably. If you want to double
check, shut off the water to the water heater, drain the hot water lines
at a lower sink, then ease on one of the shut off valves. If water
comes out, it's the cold. If air sucks in it's the hot.

Ned Flanders

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Dec 27, 2006, 4:55:21 PM12/27/06
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I'm suprised you couldnt find that on the web.
Like he said it is standard practice/code to put hot on the left and cold on
the right.
Did he get it right in the rest of your house?


"Mike Grooms" <iron...@fuse.net> wrote in message
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Paul

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Jul 14, 2021, 8:45:03 PM7/14/21
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Turn on one of the valves and let trickle into a bucket in ten minutes or less it should be warm - if it’s the hot. Start with the left because that’s the norm. If you hock the sink and try it you can always switch the lines if it’s wrong.

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For full context, visit https://www.homeownershub.com/plumbing/how-to-identify-hot-cold-stub-outs-2143-.htm

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