Bending / Forming sch40 - sch80 PVC

[Sacohen]

From what I found this is the difference..

Chlorinated Poly (Vinyl Chloride) (CPVC) is a thermoplastic pipe. 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.

PVC pipe cannot meet the high temperatures that CPVC pipe can. PVC corrosion resistant pressure pipe, IPS sizes 1/8" through 24", is ideal for use in applications with temperatures up to and including 140°F.

If CPVC is designed for water distribution then that would mean drinking water as well.

As far as fittings I know that I'm using 1/2" CPVC for my return from my Denitrification unit and I have standard PVC fittings on it.

 

[smb2415]

@Sacohen - CPVC is not the same as PVC grey electrical conduit. CPVC, although available in many colors, is typically an off-white to almond color. CPVC is in the plumbing section and is drinking water safe.

Many recommend not using CPVC as it is vastly thinner than PVC. Mr. Saltwater tanks has a video on this if anyone cares to watch it.

 

[madean]

Instead of using torches and heat guns to bend pipe just use a heat blanket that was designed for this application. I use them every once in a while to bend 90's and offsets on PVC conduit. I have put sand in the pipe and done it like that and with out sand. The sand does seem to help but it's all about reading the pipe when it gets hot enough to shape. If you wait until it's too long it will just be like a limo noodle. If you don't wait long enough it will deform. The nice thing about the blanket is that it will heat up the area under the blanket in a uniform manner. The problem with a torch is that you are not beating it up uniformly. It can be done with a torch. But my money goes on the people who try with a heating blanket will have a higher success rate. Cooling the pipe down is important if you don't once you have shaped the pipe it will try and return to its normal shape. It kind of has a "memory" and it wants to return to its normal shape until it has cooled enough to not be shaped.

 

[smb2415]

Heat blanket eh?! humph, always a right tool for the job. Certainly helps to know that one does exist - although I've never seen one. I've got google working on it now. hmmm, at around $200 I'll stick with improvising with a torch or heat gun.

 

[madean]

Sorry people. I had no idea how expensive these blankets are. The ones we have at work are the greenlee heating blankets and they start at around $200. They work great but I guess if you are just trying to bend a few pipes it's not really worth spending that much.