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Old 02-23-2013, 06:23 PM   #1
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Would you replace these valves under the sink? (picture)


Hi everyone,

I'm embarking on a little project - replacing my kitchen sink. I'm going to post a couple questions to get started, and I plan to come back and post a photo of the completed results.

These are the hot/cold valves. They haven't been shut off in 25 years. The left (hot water) one looks pretty horrible. Should I bother replacing them since I'll be in there anyway, replacing the sink? Thinking about buying a mini pipe cutter and cut them clean off right below the soldered piece. Replace with a couple shiny brand new compression valves.

Is it as easy as I imagine? Any soldering involved, or will the compression valves do the trick?

Thanks!
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Old 02-23-2013, 06:28 PM   #2
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Would you replace these valves under the sink? (picture)


Buy a pair f 5/8 x 3/8 compression straight stops. You can cut the copper below your existing valves to install the compression stops- no soldering.

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Old 02-23-2013, 06:40 PM   #3
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Would you replace these valves under the sink? (picture)


Just clean off the pipe before even trying to cut it.
A strip of sand paper will work.
Also get yourself two new stainless steel flex lines for the supplys.
Make sure to measure before buying they come in a lot of differant lengths.
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Old 02-23-2013, 07:04 PM   #4
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Would you replace these valves under the sink? (picture)


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Buy a pair f 5/8 x 3/8 compression straight stops. You can cut the copper below your existing valves to install the compression stops- no soldering.
Thanks.
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Old 02-23-2013, 07:05 PM   #5
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Would you replace these valves under the sink? (picture)


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Originally Posted by joecaption View Post
Just clean off the pipe before even trying to cut it.
A strip of sand paper will work.
Also get yourself two new stainless steel flex lines for the supplys.
Make sure to measure before buying they come in a lot of differant lengths.
Thanks. I didn't even think to measure those since they are flexible. Good catch.
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Old 02-23-2013, 07:27 PM   #6
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Would you replace these valves under the sink? (picture)


Use the better 1/4 turn ball valves---those ones like you have there can't be trusted when they get old.

Brass Craft brand are good----go to the Home Depot for them.
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Old 02-23-2013, 07:34 PM   #7
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Would you replace these valves under the sink? (picture)


I would not consider keeping them. The one on the left has been leaking for a long time, it may be such a small drip that it dries before hitting the ground, but it has leaked or still is leaking now.

You will find that you may not be able to turn the water off with those valves.
They work great when new, but then they sit there for years without being opened and closed. When you do need them to work, quite often they will not seat all the way and still drip after you close them, to remove the supply lines to the sink.
This is why you want to update the valves to 1/4 turn.
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Old 02-23-2013, 11:06 PM   #8
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yes, I would replace them.
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Old 03-01-2013, 05:46 PM   #9
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Buy a pair f 5/8 x 3/8 compression straight stops. You can cut the copper below your existing valves to install the compression stops- no soldering.
I can't find 5/8 x 3/8 anywhere. I can only find 1/2 x 3/8 like this:
Link to 1/2 x 3/8 HD valve

Home Depot had a giant display of these, so I assumed this size was the most common. Did I get the wrong ones?
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Old 03-01-2013, 06:25 PM   #10
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Would you replace these valves under the sink? (picture)


Should work. I'm in the habit of saying 5/8 OD because there is a 1/2" OD copper tubing (rigid pipe like yours is 5/8). Been screwed on parts orders too many times
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Old 03-01-2013, 07:06 PM   #11
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Should work. I'm in the habit of saying 5/8 OD because there is a 1/2" OD copper tubing (rigid pipe like yours is 5/8). Been screwed on parts orders too many times
Just measured the opening and it's 5/8". Why it's labeled 1/2", I'm not sure but you are absolutely correct, these will work! I'm pumped to get started on this early tomorrow morning.
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Old 03-01-2013, 07:27 PM   #12
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Would you replace these valves under the sink? (picture)


Pipe is measure by its ID, not its OD. You are going to do something with that dishwasher hose right?
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Old 03-01-2013, 08:23 PM   #13
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Pipe is measure by its ID, not its OD. You are going to do something with that dishwasher hose right?
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Old 03-01-2013, 08:48 PM   #14
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Pipe is measure by its ID, not its OD. You are going to do something with that dishwasher hose right?
Well, I think in a few weeks, I'm going to get rid of the dishwasher and install a cabinet. We don't use that appliance and I don't plan on selling this home. I know that's strange to hear.

Is teflon tape necessary on compression valves?
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Old 03-01-2013, 08:51 PM   #15
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Is teflon tape necessary on compression valves?
Nevermind, I see that's a no-no.

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