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Author:
cvcman
I put a small vaity in my basement and I ran new hot and cold water lines, sweated all the joints but I used the chrome shutoffs uder the vaity, they are 1/2" compression and the other end is 3/8 threaded that I used the flex lies to the faucet.I thought I saw ONE drop of water laying on top of the 1/2" compressio nut.
I wiped it off and checked it again 15 minutes later and its dry..
My ? is
1) are these fittings reliable with a compression joint ?
2) do you guys use tape on the threads for the 1/2" compression end ?
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Author:
Timsplumbing (MA)
No tape on compression threads pipe thread compound. I use the compression stops all the time because I use the Pro Press copper fittings and you can not soilder within 3" of a joint.
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Author:
cvcman
are you saying no tape or compound or use compound ?? I didnt use either, I put them together dry ???
I just checked it again and its dry, i assume its ok..These are Keeny brand I bought them at the plumbing supply...They are 1/4 turn shutoffs..They seem to be made pretty well but i juat wondered if they remain leak free or they are a problem
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Author:
packy
plumbers grease applied to the ferrule and threads before tightening.
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Author:
waukeshaplumbing (WI)
pipe dope around the inside of the valve where the ferrel will go
sometimes they leak a bit, you just have to tighten them a bit more...the dope helps things slide into place....without it i think it can bind a bit and you get more leaks
compression stops is all most plumbers use...i never use anything else unless i have to... i use the brasscraft 1/4 turns
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Author:
cvcman
Well its been 24 hrs and not a drop so I guess they are fine
I use the super blue plumbers dope would that be ok in the future ?
Seems like the dope would inhibit the proper seal ???
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Author:
jimmy-o (CA)
The idea is to lubricate the threads, and the ferrule. In both cases, you have metal moving against metal. Teflon tape ( actually we must legally call it "kleenex" tape since Kleenex does not object to use of the name, but Dupont does object to use of the word teflon ) anyway, the tape can interfere with the necessary metal-to-metal seal of the ferrule. Lubricant does not.
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Author:
hj
1. They are all I have used for decades, although there are differences between manufacturers.
2. NEVER.
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Author:
hj
Have never done it yet. Open the package, slide the valve on, and tighten it.
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Author:
mr leak (CA)
Compression shut offs are reliable and standard. There is no need to use teflon tape of supplies that have the rubber ir synthetic insert just snug up and don't overtighten
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Author:
SwimRunPlumb (MI)
hj, you don't use any dope on compression fittings?
Just curious, because I may stop if it is unnecessary???
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Author:
hj
NEVER have. I just put the compression fitting on the tubing without taking it apart.
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Author:
joe plumber (NE)
Thats exactly what I do also .I check to make sure there is a ferrule and then attach the shutoffs to the pipes.No need for anythingelse .
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Author:
dlh (TX)
same here. stick it on then tighten with no mess from dope or grease
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