Where Do I Disconnect Copper Pipe, From Valve? - Plumbing - DIY Home Improvement | DIYChatroom
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Old 03-05-2019, 04:07 AM   #16
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Originally Posted by hkstroud View Post
That is correct. Hold the center nut with a wrench and unscrew the nut at the white arrow with another wrench. Your braided tubing should have a nut with a rubber washer inside that will screw onto the coupling.
Thanks!
That confirms what others are suggesting; unscrew at white arrow.
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Old 03-05-2019, 04:17 AM   #17
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Originally Posted by wooleybooger View Post
Judging from your picture the fitting looks like a solder connection to flare or compression fitting adapter. Makes no difference to the disassembly. Notice the silver area to the left of the fitting on the copper pipe. You indicated the center is smooth and would need held with pliers. That adapter can be held with a wrench, you don't want it to try to turn. And yes some type of light lub will help some.

Thanks!
I see what you’re saying about the silver area to the left of the fitting on the copper pipe, but you say it makes no difference to the disassembly. Correct me, if wrong, but if that’s a solder connection, it sounds like unscrewing at white arrow won’t be possible.
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Old 03-05-2019, 04:27 AM   #18
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Originally Posted by Akpsdvan View Post
....


Back to the OP,, if all else fails cut the fitting out and splice in a new run of copper with new fittings at either end.
Thanks!
If it comes to this, it sounds like, I’d have to solder, the new run of copper, which I embarrassingly admit, I’ve never done and don’t have tools for. That said, where would you cut?
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Old 03-05-2019, 04:42 AM   #19
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Re: Where do I disconnect copper pipe, from valve?


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Originally Posted by a1481155 View Post
Thanks!
I see what youíre saying about the silver area to the left of the fitting on the copper pipe, but you say it makes no difference to the disassembly. Correct me, if wrong, but if thatís a solder connection, it sounds like unscrewing at white arrow wonít be possible.
The connection disassembles from the right side (red arrow). It will be either a flare connection or a compression connection. Makes no difference to unscrewing the nut on that side. The left hand side (white arrow) can only be disassembled with a torch or tubing cutter/hacksaw, you don't want to disassemble that. Hold the left side still with a wrench on the hex part so the copper pipe doesn't twist and unscrew the nut.
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Old 03-05-2019, 07:48 AM   #20
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Re: Where do I disconnect copper pipe, from valve?


The nut on the left should be used to disconnect. Whether the fitting is a compression fitting or a flare fitting is impossible to tell until the nut is removed. Whether it is a compression fitting or a flare fitting is immaterial at this point, however it is probably a compression. It would be unusual to use a flare fitting for connection of a dishwasher water line. Plus to make a flare fitting requires flaring tool. It is difficult to tell from the photo but the nut on the right appears to be larger than the nut on the left. That indicates that the fitting is not only a connector it is an adapter. Probably from a 5/8" copper line to 1/2" copper line.
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Last edited by hkstroud; 03-05-2019 at 08:07 AM.
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Old 03-08-2019, 06:18 AM   #21
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Originally Posted by hkstroud View Post
The nut on the left should be used to disconnect. Whether the fitting is a compression fitting or a flare fitting is impossible to tell until the nut is removed. Whether it is a compression fitting or a flare fitting is immaterial at this point, however it is probably a compression. It would be unusual to use a flare fitting for connection of a dishwasher water line. Plus to make a flare fitting requires flaring tool. It is difficult to tell from the photo but the nut on the right appears to be larger than the nut on the left. That indicates that the fitting is not only a connector it is an adapter. Probably from a 5/8" copper line to 1/2" copper line.
Thanks!
But what if it IS solder on the left side?
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Old 03-08-2019, 06:51 AM   #22
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Re: Where do I disconnect copper pipe, from valve?


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Thanks!
But what if it IS solder on the left side?
It can be heated and pulled apart. Clean the right hand nut with a stiff brush and look closely at it. You should see a couple threads, that tells you that nut will unscrew. I'm pretty sure I see some threads even with the white gunk on the fittings. Turn off the water and unscrew that nut.
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Old 03-08-2019, 08:05 AM   #23
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Re: Where do I disconnect copper pipe, from valve?


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But what if it IS solder on the left side?
It is not. The nut connects the pipe to the coupling. It will turn.

When you unscrew the nut and push it back you will see a copper ring around the pipe. The nut presses the ring against the coupling, make the water tight seal and holds the pipe in place.
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Last edited by hkstroud; 03-08-2019 at 08:07 AM.
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