John Carmack wrote: > > I finally got a distributor willing to sell me single units of the > Structural composite tanks: Performance Water 714-736-0137 > > The part I am looking at is pn:31573, a 21"x36" tank with 4" threaded > flanges on top and bottom. It weighs 46 pounds (less, if you remove the > bottom tripod), and holds 45 gallons. It is only rated for 150 psi use, > but burst pressure should be 600 psi. We are probably going to hydrotest > to 400 and use at 250. > > With this low of a pressure rating, regulated pressure will be necessary, > but this line of tanks would be particularly suitable if we wind up going > with TZM radiatively cooled biprops, because you can't really use any > higher pressure than that without increasing the heat transfer too much. > > The price... $320. Shipping will probably be a fair amount, and lead time > is three weeks. > > John Carmack
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 _______________________________________________ ERPS-list mailing list [EMAIL PROTECTED] http://lists.erps.org/mailman/listinfo/erps-list
