If I want to ty in to a 1/2" CPVC pipe (warm water line) that is a few years old, how do I clean that connection?

Use pvc pipe cleaner and if joing to abs use abs/pvc glue.

Use pvc pipe cleaner available at any hardware store.

Jong66... could use just plain old sandpaper and then use a purple pvc/cpvc primer and a cpvc cement.

Hercules and weld-on make acceptable pvc/cpvc primers... but will need to use approved cpvc cement to weld cpvc fitting together... ok?

Check out these links:

http://www.herchem.com/msds/MSDS62_PVCCPVC_pur.pdf

http://www.namat.com/pdf/PB-P70.pdf

Plastic Pipe Cements (http://www.herchem.com/products/pipecement.html)

Scroll to the cpvc sections... especially the last link.

Let us know if need more information... Mark

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