Is there any reason...

[boyurboy]

Not to build a RIMS chamber out of CPVC? Operating temps seem to be within spec for the plastic, it would be a better insulator (less heat loss), and it would certainly seem to be cheaper as a point of entry than stainless or copper...we don't work with particularly high pressure, so that should not be an issue.

I can't see the negatives that would prevent such a beast...aside from the fire hazard if you run it dry somehow...?

 

[jkarp]

I vaguely recall someone here having a CPVC RIMS melt and nearly catch fire when it somehow ran dry.

 

[Poobah58]

I vaguely recall someone here having a CPVC RIMS melt and nearly catch fire when it somehow ran dry.

That was me! Don't do it. You can build one out of screwed stainless for about $80. Cheaper than dumping beer!

 

[Sawdustguy]

Not to build a RIMS chamber out of CPVC? Operating temps seem to be within spec for the plastic, it would be a better insulator (less heat loss), and it would certainly seem to be cheaper as a point of entry than stainless or copper...we don't work with particularly high pressure, so that should not be an issue.

I can't see the negatives that would prevent such a beast...aside from the fire hazard if you run it dry somehow...?

If you make one out of CPVC, I recommend you pray before each brew session that you don't get a stuck mash because if you do get a stuck mash chances are pretty much 100% you will have meltdown and possibly a fire. DAMHIKT