Thread: Corrosion on Plastic Pipe to Copper

There is some corrosion that appears to be growing on the plastic pipe to copper pipe joint. Any incite into this kind of corrosion or whether it is just building up form a pin-hole leak in the joint would be appreciated.
plasticpipe.jpg

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Pin hole leak and subsequent mineral build up from hard water.

Or a leak at the threaded fitting.

Or a leak at the CPVC male adapter fitting as that looks to be one of the approved CPVC/copper male adapters (CPVC male adapters which are all plastic should not be used in hot water lines, and maybe not even if cold water lines - I'd have to look the cold water lines back up).

Just offering some other options, but if you just say "leak" at the fittings ... you cover any of the actual causes.

Originally Posted by Jerry Peck

Or a leak at the threaded fitting.

Or a leak at the CPVC male adapter fitting as that looks to be one of the approved CPVC/copper male adapters (CPVC male adapters which are all plastic should not be used in hot water lines, and maybe not even if cold water lines - I'd have to look the cold water lines back up).

Just offering some other options, but if you just say "leak" at the fittings ... you cover any of the actual causes.

Thanks Jerry, and Raymond.

CPVC behind it cooked by the torch.
Yep, looks like the Creeping Crud from a leak

Originally Posted by Bob Harper

CPVC behind it cooked by the torch.

It looks more like shadow from the flash....

- - - Updated - - -

Originally Posted by Bob Harper

CPVC behind it cooked by the torch.

It looks more like shadow from the flash....