Now that is the oddest looking pump I've ever seen

Here's how we do it


Also note the gas trap on the suction line.

The pump we use is the same one as in the drawing, One of the engineers that worked with us before have one running a water fountain in his garden




Quote Originally Posted by US Iceman
Hi Tycho, they are Cornell refrigerant pumps (open drive, not the hermetic ones) See the link below for additional information.

http://www.cornellpump.com/industria...eticHansen.pdf



These certainly help, but they don't prevent all of the cavitation issues. Without a vortex eliminator (stopper) you will have all sorts of problems if the operating conditions are close to the minimum pump requirements.

The vortex eliminators do provide a very much needed operational requirement.