Don't ask this at Home Depot: "I need to glue pipes ... to UV light, so it must be kept out of direct sunlight. It's commonly used for drain-waste-vent (DWV) piping. CPVC is a form of PVC used ...

If you skip the step of primer, the bond between the two pipes may not be as strong as it would be if the primer was used. PVC primers — such as the Oatey Primer — help clean the surface of ...