Pre-Pie Chunker

[dethstik]

<div align="center">PRE-PIE CHUNKER

4" x 10' tank (252000lbs of Force@140psi)
2" x 10' barrel (BOOM!)
Ammo: Anything That Fits.
Fill, Launch, & Laugh!
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[spudshot]

dotn shoot taht in cold weather, pvc gets brittle, and may explode

[dethstik]

this cannon was outside in the cold long enough to shoot it, it gets pumped up and loaded in our basement, but thanks for your concern i didnt know that the cold effected pvc like that.

[ƒlying$pud]

i wouldn't want to get hit by a snowball that had come out of that

[boilingleadbath]

... especialy considering that any snowball that will survive launch from that thing is pratically a chunk of ice... at least <i>I</i> couldn't get any snowball to survive 20-30 psi with a diaphram valve, no matter how compacted. Maybe a sabot would help? I'll have to check when it starts to snow...

[BC Pneumatics]

"4" x 10' tank (252000lbs of Force@140psi)"

all inside of a non pressure rated launcher, fun....

[dethstik]

actually it is rated for 220 psi ... to buy somthing unrated for this type of project is just... well... stupidity but thanx for pointing that out

[drac]

The pipe is rated but the fittings aren't, especailly those two elbows.

[beebs111]

i thought that 90' elbows were pressure rated just not the u bends

[dethstik]

you know im not as "think as you fucking retarded"i am.... i dont think that it needs a printed rating if you pressure test them your self to 300 psi.... if it doesnt explode or leak at that point i am pretty sure that they are safe to run at 140 psi....NEXT!!!!!!

[SpudStuff]

1. take an anger management
2. that fitting is not pressure rated
3. PVC gets very brittle in cold
4. your chamber is only rated to 220 psi so why ary you taking it to 330PSI are you that dumb

[drac]

The DWV fittings may be able to handle pressure, but they have very short socket length=short bonding area. They may hold up to the pressure but have an increased chance of blowing off.

[runningawaypyro]

hhmmm how can you tell if they are pressure rated or not? if there sch40pvc they should be pressure rated right? maybe im wrong...

[mark.f]

DWV fittings have a shorter socket depth and long, smooth, unsupported curves and angles. Pressure fittings just look more "solid" to people. There is no change in outside diameter on a pressure rated elbow.

[WOW!!]

I would stay away from elbows and 45* once you get around 4". I have used DWV bell reducers up to 120PSI with water. So the only things that are safe the are DWV to me would be couplings, bell reducers, reducers. But DWV parts with more sufface area like that is scary to use, and in that kind of weather.