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Hello and DWV

Post questions and info about combustion (flammable vapor) powered cannons here. This includes discussion about fuels, ratios, ignition systems, safety, and anything else relevant.
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Unread postAuthor: starman » Wed Mar 18, 2009 2:42 pm

SpudBlaster15 wrote:I'm not saying that PVC combustion cannons are unsafe. ABS is just the better option, mostly due to my climate. For at least 5 months of the year, PVC cannons are unsafe to use due to the cold. PVC is also extremely expensive in large pressure rated sizes, so given the choice between DWV PVC and DWV ABS, the choice is clear.

In warmer climes in the US, PVC is literally dirt cheap. Even larger bore pressure rated pipe is very reasonable. Last year, I bought a 20' section of 4" pressure rated sched 40 for $35 at the local commercial pipe dealer....about $1.50/ft. ABS is available here but not nearly as plentiful.

I think we have varied local supply issues. Both are obviously very usable. The guys in Europe don't have it nearly as good....thus the preponderance of metal cannons there.
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