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Gently does it!

03 January 2017

Goldsteig, a German dairy producer, operates across three plants which produce almost 100,000 tonnes of cheese per year from 860 million kilograms of milk."The company has put its trust in the new MasoSine Certa Sine pump, from Watson-Marlow Fluid Technology Group, for the production of cream cheese. 

. The gentle handling of the pump makes it well suited for transferring the cream used to manufacture mascarpone and whey for ricotta, while its ease of cleaning makes for lower maintenance requirements. 

"Pumping is an important stage of production at the cream cheese plant, where due care and gentle handling matter most,” explained Günter Schlattl, operations manager. "If the shearing forces are too high, then the binding – and therefore the structure of the mixture – can be damaged. Ultimately, the final quality of the cream cheese will suffer, and for ricotta and mascarpone, the texture of the end product is essential.”

Goldsteig has been using a Certa sine pump for these delicate tasks since November 2015. "We had used MasoSine pumps for several years as part of our butter production, so we were already convinced about their low pulse, gentle handling capabilities,” explained Schlattl.

The Certa is designed on the proven sinusoidal positive displacement principle for use in the food and beverage industry. It is able to convey product more gently than other pump types. Compared with rotary lobe pumps, for example, Certa is able to deliver up to 50% more gentle handling. As a result, the pump is suited to shear-sensitive fluids or media containing large or delicate particles, with no loss to product integrity. Changing to a higher viscosity product has negligible impact on power required. For example, increasing viscosity from 20,000 cP to 200,000 cP nominally increases the required power by around 0.1 to 0.3hp (0.22 kW).

Hygiene is always high on the list of considerations when specifying for pumps destined for use in the food industry - CIP (clean-in-place) capability in particular. 

“The appropriate certification was crucial for the application in Tittling since we perform a daily CIP clean with caustic,” says Mr Schlattl. “After one of our first CIP operations following installation, we opened the pump to check the results and found that it was totally clean – simply outstanding.”

In Certa pumps, the number of components in contact with the product has been minimised to ensure ease of cleaning. As a result, the pump is both CIP and SIP (steam-in-place) capable with its standard configuration. It is certified to 3A and EHEDG EL Class I and is available with flows of up to almost 42,000l/hr.

“Since installation, our Certa pump has been running without a single hitch,” said Schlattl. “To date, we have not had to replace any parts, even though it is running a double shift daily for up to 12 hours." Total cost of ownership of the Certa Pump is also low as sine pumps consume up to 50% less energy than lobe or circumferential pumps, particularly when working at higher viscosities. 

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