Many years ago a prospector needing water came across an old rundown shack. Near it was a well with an old-fashioned pump. Attached to the pump was a tin can with a note inside that said, “This pump ...

Unlike centrifugal pumps, positive displacement sliding vane pumps are dry-run capable, which means they do not need to be pre-primed, resulting in higher suction-lift ...

The recently developed Super U Series of self-priming pumps from Gorman-Rupp Co., Mansfield, Ohio (gormanrupp.com), are said to be the most-efficient (up to 75%) solids-handling pumps on the market.

I don't quite understand what's going on, but I don't think Pervis is quite accurate; the 1250 has an excellent ability to deal with a 1.5m head.<BR>If you have tubing on both ends of the pump, you ...