New Lewa pump
For stringent hygienic requirements

LEWA has extended the range of its Ecodos series to fulfil the stringent hygienic needs of the pharmaceutical, biotechnology, food, cosmetic and personal care industries. The new pump provides fluid metering and transfer from 0,4 l/h to 1.500 l/h at pressures up to 20 bar.

The German company LEWA is without any doubt one of the most wellknown manufacturers in the world of zero leakage metering pumps. Its Ecodos pumps range are diaphragm metering pumps for flow rates of 0,4 l/h to 9000 l/h ep to 20 bar maximum. After a first announcement late last year, concerning a new pump in the 500 l/h and 7,5 bar performance range, the company now introduces a pump for the stringent demands of the food and pharmaceutical industries. The new ‘Ecodos hygienic’ pumps indeed fulfil all sanitary and aseptic requirements without compromising the dependable performance and economy of the Ecodos series. The new pumps series has a well defined target group, mainly comprising the following fields of application:
r accurate and precise delivery of buffers or solvents in liquid chromatography
r continuous proportional blending of sensitive or expensive fluids in independently adjustable streams
r sanitary or aseptic fluid transfer
r dosing of fluid ingredients such as enzymes, vitamins, colours, flavours, and nutrients into a main fluid stream
r metering additives in fluidized bed agglomeration
r delivery of fluids to spray mechanisms for coating, such as vitamins and tablet coatings
r filtration and ultrafiltration

Hygienic Design
The hermetically tight design ensures a contamination-free, sterile environment for fluid pumping or metering, even during extended process operations. The pumphead features low hold-up volume, which minimizes waste of expensive fluids. The pumping chamber is streamlined with an open fluid path to allow optimal flushing, with all the fluid "active". Moreover, all pumphead components are constructed of 1.4435 (316 L) stainless steel, with all internal wetted surfaces mechanically polished and electropolished according to industry standards (<0,5 µm). This provides ease of residue removal and protection from corrosion. ln addition, the choice of PTFE and elastomer materials and the special interior design aspects of Ecodos hygienic pumps ensures CIP/SIP capability. Product changeover is easily achieved by flushing, followed by drying with sterile air.