Centrifugal or positive displacement – which pump do I choose?

https://www.pumpindustry.com.au/centrifugal-or-positive-displacement-which-pump-do-i-choose/

As a pump user, you will be confronted with the decision as to whether your application requires a dynamic or positive displacement pump.

There are two general types:

1. Rotodynamic (which the main subclassification is centrifugal)2. Positive displacement