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Operating Principal

The Rotho® Peristaltic Hose Pump is a positive displacement transfer machine used for pumping a variety of substances. The pumping action, known as “peristalsis”, is found in many biological systems such as the gastrointestinal tract.

The fluid being transferred is confined within a reinforced internal hose located within the pump housing. The pumping action occurs when the pump roller glides over and compresses the internal hose, creating pressure which forces fluid out. Once the roller passes, the internal hose returns to the uncompressed state, creating a vacuum, which will draws fluid in. The alternation between compression and expansion of the internal hose creates a constant rate of displacement.

Roller vs. Shoe

All Rotho® Peristaltic Hose Pumps take advantage of the ultra-efficient “Roller” design. The use of rollers eliminate the requirement for a messy lubrication bath within the pump housing. When compared to others, the Rotho® “Roller” method greatly reduces damaging friction to the surface of the internal pump hose.

What makes Rotho® Peristaltic Pumps unique among our competitors:


The Rotho® Peristaltic Hose Pump is able to handle abrasive and aggressive fluids more effectively than most other styles of pumps. The pumped fluid is confined within the reinforced internal hose and is isolated from the mechanical pump components. The fluid isolation also makes the Rotho® Peristaltic Hose Pump appropriate for products that may crystallize.


The Rotho® Peristaltic Hose Pump is suitable for many applications and is compatible with a wide range of fluids. Selecting the most appropriate internal hose based on chemical compatibility, operating pressures, temperature and duty cycle will ensure smooth operation.


The Rotho® Peristaltic Hose Pump features an unobstructed flow path, making it ideal for the transfer of fluids with suspended solids. Free of glands, valves and seals, the Rotho® Peristaltic Hose Pump can effectively transfer shear-sensitive and foamy products. The pump provides a gentle, non-emulsifying transfer for delicate products.


The Rotho® Peristaltic Hose Pump is perfect for dosing and metering applications. Examples include Sodium Hypochlorite, Sodium Bisulfite, Ferric Chloride, Polymers, Lime Slurry and Carbon Slurry. Chemicals such as Sodium Hypochlorite which emit gas during transfer are no problem for the Rotho® Peristaltic Hose Pump.


The Rotho® Peristaltic Hose pump is completely self-priming and capable of generating 29 Hg, close to a perfect vacuum. The tremendous suction capabilities make this pump perfect for highly viscous fluids such as honey, resins and sludge and ideal for negative suction lift applications.