T&T: Pump-out Pumps

[Richard Quarles]

> From: "C. Marin Faure" <cmfaure at earthlink.net>


> Of the various types we have used over the years--- vacuum,
> diaphragm, giant macerator pump--- the only design I've seen that
> works more often than not is the kind that's like a giant dialysis or
> blood transfusion machine.  A flexible hose runs around the inside of
> a circular chamber and an arm with rollers on each end spins around
> and compresses the hose, thus pulling and pushing the contents
> through the hose.  I've heard the name of this kind of pump--- our
> boat has a small one for the shower sump pump--- but I can't remember
> it.

Peristaltic

Rick Quarles
Barric II, Nordic Tug 32-147
New Bern, NC