Progressive cavity pumps
A progressive cavity pump is usually made up of a single helix rotor revolving within a double helix stator (‘helix’ refers to the shape, which is like a corkscrew). As the rotor turns, being driven by the motor, it creates a space between the rotor and the stator which progresses down the pump from the suction to the discharge. This design means the pump can be used from low flows to high flows, the flow being directly proportional to the speed of the pump. It’s also good