Is the vortex pump a voluminous pump?

The vortex pump is a dynamic pump, and not a volumetric type pump . by various principles of operation, the pumps can be divided into volumetric pumps and other types of pumps .} to voluminous pumps include diaphragm pumps and piston pumps, and the edged pumps are dynamic pumps and the dynamic pumps and dynamic pumps and They are classified along with centrifugal pumps and axial lobe pumps . . The characteristics of the vortex pump include a simple design, light technology of casting and processing, but low efficiency, not more than 55%, therefore there are restrictions on the use of .}}}}}}}}}}}}