Pipe Leaking Under Kitchen Sink

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Old 04-21-14, 04:37 AM
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Pipe Leaking Under Kitchen Sink

I have this pipe that has small drips coming down it.
There has been pools of water in cabinet and now have rust around bottom.
Home is only 13 years old. I think bottom cabinet might be ruined but wondering what floor is like below this drip. I think it dripped in basement a little.
Anyway, which way would I turn these pipe nuts to tighten it if that is what is needed?
Its right behind the insinkerator and very hard to get to.
 
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Old 04-21-14, 05:09 AM
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That very first one, with the green discoloration...

You would put a wrench on there, the open end as close to the disposal as possible in this photo. You would turn it by pulling it towards us and the wall. Turn it minimally though, like a 1/4 turn at a time, as it is crimping down on the copper tubing. Do it too much and you'll have to replace it.

Edit: I see a drip now...

The drip off the stem of the valve, where the handle is, looks to be leaking around the packing or o-ring. Tighten that one too. For that one you'll put the wrench at like 12:00 and pull towards you.
 
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Old 04-21-14, 05:39 AM
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It looks like you have corrosion around the other line in the back of the photo which could mean it has a slow leak as well.

When tightening both places you will need two wrenches. One to hold the body of the valve and the other to tighten the nut. Righty tighty, lefty loosey. So for the packing nut under the knob hold the valve body with one wrench and put the other wrench on the nut right behind the knob. As you face the knob turn the nut clockwise so the top of the nut is going to the right to tighten. I would tighten that first. Dry everything off and come back and check an hour or day later.

Only tighten the nut where it meets your copper pipe if it is leaking. Do NOT tighten it just for good measure. You don't want to mess with something that is not leaking as tightening too far can cause it to start leaking or may split the fitting.
 
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Old 04-21-14, 05:40 AM
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You really think a dude asking which direction to turn wrenches and on what is going to grasp counter torque?
 
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Old 04-21-14, 07:56 AM
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Ok, so now I understand the bottom nut is crimping on to lower copper pipe, that helps.
So bottom nut from left to right? This seems backwards. And silver side nut clockwise. I got that.
I might need to post more pictures. I might have a issue with corrosion.
I have a water softener and it uses salt.
I will post more later to show more of what is going on in there.

edit: What about top silver nut? Does it tighten/loosen?
 
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Old 04-21-14, 08:51 AM
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Yes bottom nut from left to right, in your picture. It is almost always clockwise to tighten things.

Only tighten things that are actively leaking. You can tighten too much on plumbing fittings which makes them leak worse.

And I do agree with the other poster that mentioned using 2 wrenches. If you can handle it. Whatever you are trying to tighten, or loosen for that matter, you want to try and counteract the force you are using to tighten.

So if we are pulling down on that packing nut, towards us, we'd want another wrench on the sturdier valve with our other hand pushing up. To set it off sort of.

This is especially important with these types of tubing and piping as they are very rarely fully supported and will easily bend, twist, fold.

And also it does look like you do have a leak in the back as well.

If there is a leak from the top nut, you'd want that one to come down onto your valve right? So you'd turn that clockwise as well. Put your wrench on the right side and against the wall, turn it across your face so that it ends towards your left ear.

This crimps the tubing too so don't over tighten.
 
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Old 05-05-14, 10:04 AM
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Sorry it took me so long to get back to this, life happens. Anyways, I tightened both nuts (top and side) about 1/16" of a turn. It took some pressure to turn those. It doesn't seem to be leaking down the copper pipe but when i put a paper towel under it i noticed some drips off of the white sprayer hose to the right of that. I have had problems with that thing in the past. The button gets stuck and I cannot get it to turn off. Took it apart several times to fix this re-ocuring problem. So i took it apart and tightened it again and think that leak stopped. I see some cracks on the round seal where it sits on the right corner of the sink too.

Anyways, thanks for the help on the nuts. I will continue to monitor it to see if it stays dry.
 
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