You can quickly distinguish between the light beige color of CPVC pipe and the bright white of PVC. If you’re unsure, look for the printing on the side of the pipe. Cross-linked polyethylene ...

Lightly scour the PVC pipe’s exterior by hand with 220-grit ... you’ll need to apply several coats in thin layers until the “true color” is reached. Step 7: Let the PVC dry for 24 hours.