Method of pumping fluid

摘要

In a method of pumping fluid through a tubing (200) by operating a pulse generator (100) at one end of the tubing (200), the pulse generator (100) reciprocates a displacement member at a frequency of less than 3 Hz to generate pressure waves in the fluid which make a pulse converter (300) at the other end of the tubing (200) permit a flow of the fluid into the tubing (200).