South African Breweries (SAB) has added to an existing process by introducing three MasoSine Certa 400 pumps from Watson-Marlow Fluid Technology Solutions (WMFTS). Intended for use as part of a yeast cropping application, SAB made the purchase decision after assessing energy consumption comparisons between Certa pumps and comparable lobe or circumferential piston pumps.

South Africa has been home to SAB since the company’s humble beginnings over a century ago in the midst of Johannesburg’s pioneering gold rush days. Since then, the SAB has grown into a landmark South African organisation and is today the second largest brewer in the world. The company belongs to the AB InBev Group, owning globally established brands such as Becks, Budweiser, Corona, Hoegaarden, Leffe and Stella Artois.

Proven success

WMFTS South Africa visited SAB to fulfil an enquiry regarding a project that involved the use of pumps for yeast-related processes. Having in mind previous success with Certa pumps for yeast cropping at other brewery sites in South Africa, such as SAB Chamdor and Rosslyn, WMFTS was able to support these project examples with energy and CO2 savings calculations that were difficult to ignore. As a result, SAB duly placed an order for three MasoSine Certa 400 pumps.

Notably, the energy efficient pumping action of the Certa pumps, which SAB will control via its in-house SCADA system, will contribute to the brewery achieving AB InBev’s 100+ sustainability target.

The yeast application at SAB, with a viscosity of 2000cP, will demand power requirements from the MasoSine Certa of 3.1kW, which compares favourably to a comparable lobe or circumferential piston pump, which would typically require 6kW.

The energy savings presented to SAB were based on the pumps running for four hours a day, seven days per week, although this will of course be variable. Energy was based on a price per kWh of €0.15. The yearly (50 weeks) electricity costs for a Certa 400 pump can therefore be shown as €651, against €1260 for a competitor pump, giving an annual saving of €609 per pump.

The result is equally impressive for CO2 emissions, just 2625.7kg for a Certa pump versus 5082kg for a lobe or circumferential piston pump.

Clean technology

SAB will also gain from many other MasoSine Certa pump advantages. For instance, Certa pumps are cleaner than any lobe or circumferential piston pump, offering conformance to EHEDG Type EL – Class I (including Aseptic), while all contact parts comply with FDA and EG1935 requirements. Moreover, reduced clean-in-place (CIP) cycles and cleaning agents further contribute to low cost of ownership.

Certa pumps are also virtually pulse-free, ensuring no need for ancillary dampeners, while low-shear handling prevents aeration foaming and practically eliminates any waste of raw ingredients.