Also, what I really wish is that I could get ahold of some better flowing pipe bends...for example, when optomizing the design on a pipe bend one engineering dept came up with this design:



Notice how the outside of the bend is closer to a rounded off corner than to maintaining a parallel wall to the inside corner.

Also another company came up with this for a bend (program started with design 1 and in four steps came up with optimal solution of design 4):



Once again the outside corner got bigger...

I wish I could get some of those for bends to use, except for the very last bend, in which case i'd use this:



Those straighten the flow coming out of an elbow - so that it isn't up against the far wall heading into the turbine. And they're available in 316L sch 10 1.5" long radius butt weld...although I can't find them for sale anywhere.

More info on those:
http://www.fluidcomponents.com/Sales%20Brochures/Vortab/vorelpumppaper.pdf