[sgarron]

I was looking at CPVC fitting and pipe for use in my sump supply and return lines. Does anyone know if it is safe for marine use? I know that CPVC stands for chlorinated poly vinyl chloride, the chlorinated part caught my eye and has me wondering. It has a much thinner wall than sch.40 PVC, which would make it easier to hide.

[glampka]

It's fine. CPVC piping which is suitable for hot and cold water distribution has a 400 psi pressure rating at room temperature, and a 100 psi pressure rating at 180 F.

[sgarron]

Thanks, that "clorinated" had me worried. Had tank drilled last night, going plumbing shopping today.

[AMS]

why would you want to use CPVC? is the 4mm in pipe circumference that you'll be shaving off by using CPVC vs. sch40 PVC really that noticable? a thinner wall = less durable. plumbing does get brittle over time. i'm not saying you will have issues, just saying i don't see the benefit.

if aesthetics are the issue, i wouuld go the opposite direction and use sch80, which is dark gray and far less noticeable.