Internal gear pumps suit pharmaceutical applications

A new range of hygienic internal gear pumps, designed to provide the important features and benefits for pumping in food, brewing, pharmaceutical and fine chemicals applications, has been introduced by Viking Pump.

Available in the UK from Michael Smith Engineers, the positive displacement Viking Hygienic Series combines the reliability and ease of maintenance of an internal gear pump, with the cleanability of a hygienic pump. Certified to Type EL Class 1 by the European Hygienic Engineering and Design Group (EHEDG), the series is also third party certified to display the 3A Sanitary Standards Symbol for positive rotary pumps (3-A Sanitary Standard 02-11). It includes only one shaft seal (unlike the two usually found in most other types of hygienic positive displacement pump), which reduces the possibility of unplanned downtime and associated costs, internal wetted surfaces polished to a minimum of Ra 0.8µm and internal angles machined to a minimum radius of 0.8mm. The series has sealed bearings with food grade grease, eliminating the need for an oil reservoir or oil changes. Also, the pumps incorporate front removable rotor, shaft seal and casing to enable fast disassembly and reassembly for cleaning and inspection and have double seal flush / quench ports as standard to enable in-situ change from single to double seals.