The VKP from Kobold Messring GmbH is a viscosity compensated plastic flow meter that is used on a special suspended float principle having a cylindrical measuring tube and a spring-loaded float with opening. The float has a channel molded on its outside dirt molecules. Using this equipment, it reduces the danger of the float compressing and for soiled liquids that has a particle size of about 400 pm can be measured without adversity. Plus, this device has maximum pressure of 16 bar.