The dosing devices for liquids are a variety of the volumetric dosing devices, where the dosage is done via the help of a piston. Generally, the dosing device consists of 3 main parts - intake bunker, valve box and a piston. The process of dosing runs in the following consequence:
1. Loading the piston with product
2. Dosing the loaded volume of product
This operation is mediated by the valve box (distributor), which switches from a mode for loading the piston to a mode for dosing the loaded volume of product. The volume of the dose can be regulated by changing the pace of the piston.