need to stop minor leak after replacing bathroom sink


  #1  
Old 11-13-18, 07:47 PM
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need to stop minor leak after replacing bathroom sink

After I replaced a bathroom sink, I have a very slight leak at both the cold and hot connections where the lines to the faucet are connected to the copper water supply lines.

I am wondering whether I simply need to tighten the connections a bit more, or whether the solution might be more complicated. Can couplings be over-tightened?

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Old 11-13-18, 08:27 PM
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It would help to know where it is dripping from. Could be at least 3 places. Compression fittings that use a compression ring need to be tightened very tightly.... and the pipe usually needs to be clean. Is your coupling flared? And the braided lines have a rubber gasket that can be over tightened which will cause them to leak.
 
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Old 11-14-18, 07:39 AM
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If you have to take the hoses off to address the leak it would be a good idea to install shutoff valves.
 
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Old 11-14-18, 08:35 AM
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if you have to take the hoses off to address the leak it would be a good idea to install shutoff valves.
yes! +1!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
 
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Old 11-17-18, 01:04 PM
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Agreed. Typical practice is to install 'angle stop' shut off valves so you can maintain the faucet and supply piping. It appears that you have 1/2 x 3/8" adapters soldered on.

To answer your question, yes you can try tightening those hoses. There is a rubber compression washer inside there that has some give to it. Just know how to shut off your water to your house before you begin, just in case.
 
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Old 11-19-18, 10:28 AM
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Thanks the replies, everyone. I tightened the compression fittings a bit more and the leaks have stopped. I was careful to not over tighten the braided flexible lines.

Regarding shutoff valves, I agree having them is the best way to go. I don't think I'm going to delve into that now but might do so in the future.
 
 

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