In nearly every food manufacturing company raw materials, half products and end products are moved using pumps. Pumps are also being used for dosing.

Positive displacement; a portion of fluid is sucked in and discharged. A pulsating flow is also possible.

Lobe pump: a positive pump. Per rotation a certain volume is being pumped. The pressure is relatively low. Applicable both for low and high viscous flow, even when the fluid contains solid particles

Mono screw pump: A screw-shaped rotor moves in a rubber casing (stator). The rotor moves to-and-fro and presses away fluid axially. The rotor is driven by a propeller shaft. This type of pump is excellent for dosing with little pulsations. However it cannot stand running dry.

Membrane pump: A membrane is moving to the lowest point creating low pressure and through inlet valves fluid enters the cylinder. When the membrane reaches the highest point the fluid is pumped through outlet valves. This causes the outlet flow to pulsate. This membrane can be driven by motor, by air or by oil. In principle this pump can function hygienically, it has no problems when running dry and it can be used to dose. The quality of the membrane determines the durability of the pump.