It is this type of pump, that is the fluid that flows into the center of the rotor axis parallel to the direction of the shaft angle 90 degrees out, and with that direction.
This is the basic model of the pump is a liquid that flows into the center of the blades parallel to the axis of the shaft. Then flows out at an angle of 90 degrees to the direction of flow.
As a basis of this type of pump is a liquid flows to the center of the rotor axis direction parallel to the shaft and outflow angle 90 degrees with the direction flows.