Yes, the flanged openings are the way to go, with an o-ring sealed aluminum flange. (We had to have the flanges made, SNA only has plastic flanges so far as I know.) The smallest SNA flanged tank is actually a 62 gallon 18" x 65" (tall) tank. I used one of those in the Roton ATV for the liquid catalyst. I pressure tested one of the bigger flanged tanks, a 42 x 72, with a rubber gasket seal on one flanged end, and an o-ring seal on the other. The test ended when the rubber gasket blew out at 1100 psi. Pretty anti-climatic, as I was going for structural rupture. Not bad for a tank rated for 150 psi. Such pressure testing should of course be done with the vessel and plumbing filled with water, NOT GAS! ,and the hell away from everywhere. Ken
>We tried those tanks, be warned that the plugs that thread into the >flanges serve as a structural fuse at about 250 psi (Doomp! said the >hydrotest) by stripping out the threads in the polyethylene tank liner. >That tank is now a pretty pipe stand... > >Doug Thanks, we'll keep that in mind. They have flange mounts starting at the 100 gallon sizes, which could be made strong enough to reach the strength of the vessel. John Carmack _______________________________________________ ERPS-list mailing list [EMAIL PROTECTED] http://lists.erps.org/mailman/listinfo/erps-list
