Polybutalene Compression Fitting Failed

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Old 12-16-11, 06:46 PM
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Polybutalene Compression Fitting Failed

My tenant called this morning and said the pipe broke. Upon inspection a 1-1/2 yr old PB compression fitting came apart where it connects to the stop under the kit sink. Fortunately, they shut the main house stop before major damage.

My question: Are these things an endemic problem? The hot side failed, but I checked the compression nut on the cold and it was not very tight. I installed these myself, so I know things were properly snugged. This is a Delta faucet with the factory installed grey PB supply lines. This wasn't my first rodeo, but I can always learn something new.
 
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Old 12-16-11, 08:17 PM
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Were you using the nylon ferrules or metal ones?? PB will require the use of nylon in order to get a good seal.
 
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Old 12-17-11, 10:15 AM
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It was a nylon ferrule, supplied by Delta. It sealed fine for almost two years and then just blew apart. If tenants had not been home, the damage would have been catastrophic.
 
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