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Positive Displacement Pump

Uma bomba de deslocamento positivo é um tipo de bomba que move líquidos ou gases usando peças mecânicas móveis.

The main difference from other types of pumps is that positive displacement pumps displace the fluid being pumped by physical contact rather than by the application of velocity. There are several types of positive displacement pumps, including peristaltic pumps, progressive cavity pumps, screw pumps and rotary lobe pumps.