Atypical process application can consume large amounts of chemicals during daily operations. While the volumes may be large, though, they must also be very precise, with exact amounts delivered according to strict injection schedules. The pressures - from very high to very low - that the chemicals are injected at must also be governed precisely. This demand for precise flow rates at predetermined schedules and pressures requires the use of a very specific pumping technology, one that can ensure successful, reliable adherence to the injection schedule and fluid volumes. Metering pumps have - whether mechanically, hydraulically or electronically actuated - risen to the fore as a technology of first choice for the injection of chemicals in processing and agricultural applications. Yet within the realm of metering pumps there are many different styles and modes of operation.
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