According to Eriez® Hydroflow®, its mechanical concentrate mixers eliminate the traditional manual fluid mixing methods that often result in imprecise concentration control, plus they provide selection from an all-metal drum top mixer or the water-driven proportioner to ensure fluid gets neither too lean, nor too rich. More specifically:
- The drum top mixer is available in 3- and 10-GPM (11.3- and 37.8-LPM) versions, with a mixing range adjustable from 2 to 10 percent. Furthermore, the compact, easy-to-use Venturi mixer jets water through the unit to create a vacuum that siphons concentrate from the drum. A needle valve allows for infinite adjustments across the mixture range.
- The proportioner, in contrast, comes in handy when more accurate and concentrated mixing is needed. With an average flow rate of 5 GPM (19 LPM), this positive-displacement unit dispenses coolant on demand at the desired concentration. Mixing ranges are available from 1 to 25 percent. Moreover, the adjustable, non-electrical proportioner provides consistent concentration at all times, despite varying water pressures or fluid levels in supply containers. Because it is driven by the plant’s water supply pressure, it also can be used to supply properly mixed fluid through overhead piping to the machine tools — without using a booster pump.