The ideal pump design for waterworks etc
A revolutionary rotary piston machine without bearings in the power train
Simple - robust - dry running - self priming - high efficient
The simple piston rotor of this pump
(only rotating pistons on sticks)
and the simple kinematic.
The smallest Wolfhart Pump
for low volume with an extremely good suction capability (up to 90% vacuum).
newpumps.htm . .The basic function of the Wolfhart Principle etc
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