PVC vs CPVC plastic pipe

  • We are currently upgrading MFK. thanks! -neo
IITUFFTOBEATII;2175416; said:
Youve obviously never used it. its not a hassle to use at all. and for someone so concerned with efficiency you are very quick to dismiss the benefit of the increased cross section of the schedule 20, Q=V*A incase you forgot.
it may be worth discussing to some people, perhaps people who are more concerned with making educated decisions vs people just concerned with winning an argument.

and YOUR car will not go faster if you take the paint off because the metal will oxidize and will create more drag on the car. if you want to continue the conversation out of context we can discuss the plumbing at the monterey bay aquarium....
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Oh jeezus man. I didn't start an argument here, you did. :chillpill: You wanna argue about paint on cars now? it was a metaphor, get over it.

If your overflow plumbing is so tight on capacity that the difference between sch20 and sch40 makes the difference, you've cut it too close. What happens when a leaf or a fish turd gets stuck in there, wet carpet? come on.
 
Since we seem to want to discuss it. I did a quick google search for NPS dimensions, and it seems that sch20 is not actually available in 2" size. (can we put it to bed now?)

I did find dimensions for sch30 although I've never seen it available in a hardware store, and the wall thickness was .125" (2.125 ID) vs .154 for schedule 40 (2.067 ID). So .058" on diameter. This equates to a 3% difference in diameter, and a 5% difference in area. Interestingly enough, there is about 100lbs of paint and undercoating on most modern cars. So on a 3000lb car, you'd be looking at a 3.3% lighter car by removing all the paint and undercoating.

If someone can find me a spec sheet for Sch20 NPS 2" nominal, I'd love to beat this dead horse some more.
 
Thanks for the input everyone...... I personally would never use sch 20...
Either sch 40 or 80!!!! I am not sure if its the inside diameter that changes
or the outside diameter....if its the outside then the flow is the same in
both.....Either way is don't matter because it's a 2 inch pipe...
I am using a 6000watt heater in each line for each tank, so if it gets stuck
on or if the heat gets too much then I have a better chance with sch80
over sch40.... I seen a thread that showed a heater that was stuck on and
the sch 40 pipe was bend to the point of failuer...
Plus my motors are large so I don't take any chances.....
I will use PVC all the way................Thanks
 
zennzzo;2178065; said:
6000 watt heaters?
The glued joints will fail before the scd20 pipe will.
And of course it is the inside dimension that changes, if it were the outside it wouldnt be 2" anymore...
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No glued joints...all threaded.........
 
cvermeulen;2175556; said:
Oh jeezus man. I didn't start an argument here, you did. :chillpill: You wanna argue about paint on cars now? it was a metaphor, get over it.
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just thought i'd throw this out there...
if it was just a metaphor then why would you back it up?
i also believe you started the agruement on paint, as the other member just said no it won't make it go fast, your replied "yes it will make it go faster" ;)

also 100 lbs of paint won't do much making you go faster. do you go faster without your mother sitting next to you? didn't think so.

question, could the glue be toxic to fish? is there certain kinds you have to get?
 
bluehairman;2178296; said:
just thought i'd throw this out there...
if it was just a metaphor then why would you back it up?
i also believe you started the agruement on paint, as the other member just said no it won't make it go fast, your replied "yes it will make it go faster" ;)

also 100 lbs of paint won't do much making you go faster. do you go faster without your mother sitting next to you? didn't think so.

question, could the glue be toxic to fish? is there certain kinds you have to get?
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i cant believe im gonna get into this, but a 100lbs is usually the equivalent to 1/10 of a second in a quarter mile drag race. cars need paint, or there wont be any car left to race for long.

use primer and pvc glue for pvc pipe, and cpvc glue for cpvc pipe. i have used cpvc glue for pvc before, but i dont suggest doing this unless its temporary/must do now type of thing.
 
zennzzo;2178258; said:
Have you ever worked with PVC pipe?
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Thats right , Not sure what I was thinking.... anyway these inline heaters are
for koi ponds and I will place them in a straight run far as possible from joints,
they are designed for 2 inch sch 40 pipes but I will contact the manufacture
to be sure.........

check this out and find heaters....
http:www.koiofdistinction.com/store/front
 
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