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Old 03-07-2010, 06:13 PM   #1
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Compression fitting question


Hello,

I am replacing the valve beneath my sink and need some advice on how to get the existing faucet stem into the new valve.

From my readings the new compression fitting should just slide onto the end of the stem. The existing stem has a 'nipple' ring around the end and there doesn't appear to be any way the new fitting will fit. The old compression fitting of course will not come off either.

So do I just have the wrong size compression ring fitting on the new valve?

Or am I going to have cut or replace the existing copper stem? And if so - any advice?

Thanks

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Old 03-07-2010, 06:29 PM   #2
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Compression fitting question


got a picture? i usually remove the nut and ferrul 1st and slide it on the supply line.
then i install the line and slide ferrul and nut down and reattach them to the fitting

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Old 03-07-2010, 06:30 PM   #3
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Compression fitting question


Ment to mention,

This is fairly urgent as I'm in a bit of a rock in hard place here - When replacing the valve the cpvc broke off in the wall thus the main water line is off.

There's no way to turn the water back on until the new valve is in place. If the new valve has the wrong size fitting on it it would be a bad idea to install it just to get the water back on then have to recut the pipe to reinstall a new valve with right size compression fitting.

I WILL NEVER ATTEMPT PLUMBING WORK ON A SUNDAY AGAIN EVER!
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Old 03-07-2010, 06:33 PM   #4
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Compression fitting question


post a picture of what your up against so we can help you through it.
I hate doing major projects on weekends too and i do this everyday,nothing isever open when you need something!
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Old 03-07-2010, 06:35 PM   #5
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got a picture? i usually remove the nut and ferrul 1st and slide it on the supply line.
then i install the line and slide ferrul and nut down and reattach them to the fitting
No pics. My problem is I can't get the old ferrul or nut off the old copper stem that feeds the faucet - nor does the new ferrul/nut seem to be able to get over the ring on the stem to fit the new one in place. Not much experience with plumbing and I dont want to try and force the new nut/ferrul on if its a matter of the wrong size.
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Old 03-07-2010, 06:50 PM   #6
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Compression fitting question


Ok. I think I was mixing up my terminology.

I will try my best to describe it pictorially.

Near the end of the copper stem that comes down from the faucet is a ring ( I called it a nipple ring before) or flange that appears permanently welded or part of the stem. I'm assuming it's job is to provide backforce to the nut and ferrul as it is tightened.

So there doesn't look to be any way to get the new nut past that ring (without replacing or removing the whole stem). It will however fit onto the small section of the stem that's just below the ring. My gut feeling though is that this won't hold properly.

Hopefully this is more clear.
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Old 03-07-2010, 07:04 PM   #7
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Compression fitting question


is the other end of the line removable to slide the nut over or does it already have the nut on the tube?
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Old 03-07-2010, 07:16 PM   #8
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Compression fitting question


my service van isnt here to show you a picture,and i couldnt find what i was looking for on google!
if the lines are long enough and your supply line from faucet has a compression fitting on top can you just chop the collar off the supply line from faucet and use the compression fitting to connect the 2 lines?
this is so much easier to do on the job site,this is why i dont give estimates over the phone!
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Old 03-07-2010, 08:15 PM   #9
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Quote:
Originally Posted by plummen View Post
is the other end of the line removable to slide the nut over or does it already have the nut on the tube?
Well, I had hoped that it would be - turns out it connects directly into the (Delta)faucet itself! I guess they want you to buy a whole new faucet

I was going to just remove that line and put in a flex hose or slide the new nut/ferrul over it.

So i guess the question now is - since I (apparently) can't remove the old single line from the faucet itself - can it be sawed into and fitted with a piece of flex hose?

Or, the option you suggested which was to cut the very bottom of the old line off and attach there. There seems to be enough length to do that - I'm worried that without that ring the fitting won't hold tight enough. What do you think?
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Old 03-07-2010, 08:46 PM   #10
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Compression fitting question


I really think that without pictures we are "flying in the dark" and you may very well end up with water everywhere. I know that everyone does not have a digital camera but we are all reduced to guessing at this point.

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