Re: [ERPS] Re: Attn: Doug - how important is dry air?

2002-06-06 Thread David Weinshenker
Doug Jones wrote: > A Haskel pump can boost pressure from 1500 to 8000 (and we even have two > of them) but they do NOT appreciate second-hand customers; they quoted > us $4000 to overhaul one of them that we picked up at the RotRock > auction. We declined, and as a special bonus, they sent it ba

Re: [ERPS] Re: Attn: Doug - how important is dry air?

2002-06-06 Thread David Weinshenker
Doug Jones wrote: > My main conclusion is, for a small scale, it will be a lot cheaper to > buy air or nitrogen than to pump it *and ensure the quality* yourself. What's the situation going to be for commercial availability of nitrogen at high pressures... can you just buy 6000 psi filled tanks?

[ERPS] Re: Attn: Doug - how important is dry air?

2002-06-05 Thread Doug Jones
Randall Clague wrote: > > Hey Doug, > > There's been some discussion on a sublist about using compressed air for a > pressurant, as long as we're doing monoprop. The issue of humidity came up... > > > > Since the air runs straight through the compressor and doesn't sit > > > in a storage tank,