In a membrane filtration plant it is usually necessary to use two pumps for suction & reverse operation. The Vogelsang rotary lobe pumps simplify the system considerably.

Advantages using the rotary lobe pump are:

Only one pump is required for filtration and reverse operation. Rotary lobe pumps work in both directions with the same characteristics. By changing the rotation of the electric motor the reverse process is put into operation.

In the case of a rotary lobe pump the discharge flow changes proportionally with the rotation speed. Via a speed control you can adjust the suction pressure in the filter cartridge.

If the suction speed control is adjusted you will be able to follow the required pressure time graph.

To operate in reverse direction you have to use the permitted internal pressure of the membrane fabric. Usually this process works with a higher discharge flow.

Vogelsang rotary lobe pumps with HiFlo technology do not require valves and control units and operate pulsation free.