The principle of the peristaltic hose pump is based on alternating contraction and relaxation of the hose forcing the contents through, operating in a similar way to our throat and intestines. A smooth wall, flexible hose is fitted in the pump casing and is rolled and completely squeezed by two shoes on the rotor, inside the pump casing. The rotation action moves the product through the hose at a constant rate of displacement without slip, making the pump suitable for high dosing applications and pressure ratings up to 15 bar/ 220 PSI.

The hose restitution after the squeeze produces an almost full vacuum that draws the product in the hose, so very viscous liquids are pumped without problems using VERDERFLEX hose pump. The pump casing is half-filled with a specially designed VERDERLUBE, to lubricate and cool the pump to lengthen service life of the hose. Since the product only comes in contact with the hose and not with any rotating parts, the hose pump is very suitable for abrasive and corrosive applications.