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SCH. 40 vs ABS

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: Technician1002 » Mon Jun 04, 2012 5:27 pm

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Unread postAuthor: jimmy101 » Tue Jun 05, 2012 3:38 pm

That NerfHaven thread is an interesting read even though it re-hashes what has been discussed here for years.

I wonder though, for all the folks against using pressure rated PVC (at no more than half the pipe's pressure rating) and insist instead on metal containers ...

then suggest getting a used container from an unreliable source (like Goodwill), or using a container designed for a completely different purpose (like a fire extinguisher) ...

do they pressure test their metal containers?

Seems to me that used compressor tanks in particular are not a good idea. A couple decades with water sitting at the bottom of the tank can't be good for their structural integrity.

Tanks rated for compressed air really have TWO levels of safety: the original design and PERIODIC PRESSURE TESTING. Without the testing the design is unreliable.
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Unread postAuthor: Technician1002 » Tue Jun 05, 2012 4:01 pm

Glad you brought that up.. It is due again.

and PERIODIC PRESSURE TESTING.


Yes, the black one IS a DWV cell core cannon.
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