The shape of the Hydrofoil blades designed by Jongia Mixing Technology, in combination with a rest stirrer, create a smooth top over bottom velocity in the tank. Halfway down the agitator shaft, two extra Hydroprops can be applied to increase axial flow.
In most cases, the Hydroprop agitators have a fairly large surface, and the blades are oriented as such that they pump from the top downwards.
In some cases, however, the agitator can be equipped with a set of Hydrofoil blades oriented to pump upwards.