In a message dated 6/25/00 12:14:06 PM Central Daylight Time,
altamira@ecpi.com writes:
> The disadvantage of a
> piston pump over, say, a centrifugal pump is that the piston pump contains
> more moving parts.
What about rotary pumps? My cousin-in-law developed a rotary pump for the
gas dehydrator business (http://www.rotor-tech.com/default.htm) and I've
spent some time fiddling with them. Two moving parts, no reciprocating
parts, essentially zero vibration. I don't know enough to know whether
they'd be efficient in your application (presumably pumping water), but they
are truly cool little machines
Greg Burch <GBurch1@aol.com>----<gburch@lockeliddell.com>
Attorney ::: Vice President, Extropy Institute ::: Wilderness Guide
http://users.aol.com/gburch1 -or- http://members.aol.com/gburch1
ICQ # 61112550
"We never stop investigating. We are never satisfied that we know
enough to get by. Every question we answer leads on to another
question. This has become the greatest survival trick of our species."
-- Desmond Morris
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