High pumping water volume

Low pumping water volume

Low maintenance required

Frequent maintenance required

High efficiency that is degraded when the pump deviates from Rated speed

The pump is able to operate efficiently over a wide speed range away from the Rated speed

The pump can pump water with low solar radiation by using PVPS

Requires high starting torque to operate by PVPS

The pumping flow rate varies according to the pumping head

The pumping flow rate is approximately equal, regardless of the pumping head

As the water viscosity increases, the flow rate decreases

As water viscosity increases, flow rate also increases

Widely used in PVPS

Rarely used in PVPS