Peristaltics squeeze the gap between lab and plant markets
15 Jan 2000
The dividing lines between the traditional markets for peristaltic pumps laboratories, metering and dosing, OEM machine builders, etc and plant-scale industrial hose pumps, such as those of Bredel above, are becoming increasingly blurred. Bredel's sister company Watson-Marlow, for example, recently introduced a range of close-coupled industrial pumps with prices starting at £550, nearly half that of previous models. Without the need for special couplings, flanges or adaptors, the 500 and 600 series pumps have flow rates from 0.1ml/min up to 950 l/h.
Similar flow rates from 0.5ml/min to 900 l/h are offered by the new VerderLab pumps from Verder. A feature of these hygienic and chemically-resistant pumps is the 'virtual elimination' of pulsation. This a problem with most peristaltics and hose pumps (though usually adequately catered for by the likes of Bredel with pulse dampers and accumulators), but one that Verder has overcome by a design of tube saddle geometry such that pulses overlap rather than oscillate.
