Air Cannon

[artdutra04]

Originally Posted by Pat A.

I don't think a total rejection of heavy wall PVC is warrented. Schedule 40 is rated for 200 psi and that's a conservative number (probable factor safety of 2). Household water pressures can run 70 psi (think of all the pvc used without a problem, i.e. water exploding from pipes) and I know of businesses using PVC tubing for compressed air running 120 psi.

It's actually against OSHA guidelines to use PVC for any kind of (non-buried) compressed gas use.

And easier way to think of the PVC vs. non PVC debate for air cannons is to compare acrylic to Lexan. We all know that acrylic may work for many uses on our robots, but we one needs to baby it in order to prevent it from cracking and shattering. If they used Lexan on the other hand, they don't have to worry as much about catastrophic shattering.