Pumping of highly viscous liquids

Insufficient suction power, product integrity problems, dosing errors due to pulsations, high failure rates and high maintenance costs ... The companies below know the ropes. They found a solution at Watson-Marlow.

With its MasoSine Certa pumps, Watson-Marlow has for many years offered solutions for pumping liquids with viscosities up to 8 million cP. The seven models are suitable for pumping high viscosity liquids with yields up to 255,000 l/hour. The hygienic design also meets the most stringent standards and is suitable for CIP.

Sine technology

Certa's positive displacement pumps use MasoSine sine wave technology. Here, a sinusoidal rotor gently transports the liquid through the pump, drastically reducing shear and energy consumption at high viscosities, among other things. The powerful suction and low pulsations ensure a high and above all constant flow. With a single shaft and rotor, there is no further need for complex gearing or multiple seals. The pump is therefore characterized by a hygienic design and great simplicity in maintenance. Certa comes standard with EHEDG (Type EL Class I and now also EL Aseptic Class I) and 3A certification. Maintenance takes only minutes and can be performed by a line operator without disassembly. Downtime is thus kept to a minimum.

To the perfect marinade

Dutch bakery products manufacturer Sonneveld first took the MasoSine Certa into use in its production line of a ready-to-use marinade. The original lobe pumps regularly jammed due to the greasy substance, while the fresh herbs used in the marinade either stuck to the pumps or were excessively crushed. Moreover, every time the pumps broke down, the lobe pumps had to be disassembled for cleaning. Disastrous for both productivity and product integrity. After some favorable tests, the company switched to Certa pumps, which delivered visibly better results. Other viscous products such as lecithin and paste are now also pumped with Certa at Sonneveld.

Harvesting yeast

At the German brewery Hofmann, Certa 200 pumps have been used to harvest yeast for some time. Since yeast usually collects at the bottom of the fermentation tank after the fermentation process, where it forms a compact mass, high suction power was essential. Thereby, the pumps had to be able to deliver the same constant results at different viscosities. Here, among other things, the very limited pulsations of the Certa pump technology ensure a continuous flow, where yeast is sucked in from the bottom of the tank without causing unwanted turbulence.

Key to reliable dosing concept

In Belgium, Certa sinus pumps are widely used by Atlantic Engineering of Nevele. This company has been developing dosing technologies for the food industry for 25 years and with Innofill has a three-in-one concept for dosing, filling and sealing liquid products. Atlantic Engineering placed high demands on the pumps in the concept, which not only had to be hygienic and quick to clean, but also versatile. Innofill must be able to handle all liquids, from aqueous substances to highly viscous and heterogeneous mixtures, without any modifications. A continuous, gradual flow is crucial for correct dosing. All reasons why the Innofill concept invariably uses Certa pumps.