Positive displacement pumps and centrifugal pumps are the two main types of pumps available for industrial applications. Positive displacement pumps in Georgia are capable of sustaining a relatively constant fluid flow rate, at a given speed, irrespective of the discharge pressure. This fundamental characteristic sets them apart from centrifugal pumps, which are also referred to as non-positive or negative displacement pumps.
Positive displacement pumps move fluids by drawing them into an expanding space or cavity. This cavity then reduces, serving to discharge the same fluids.
These pumps generally come in three types - rotary, reciprocating, and linear. This categorization is based on the mechanism the pump relies on to move the liquid.
The first type uses rotating mechanisms such as gears and screws to accomplish the task. The second type achieves positive displacement with the use of piston or plunger mechanisms - a hand pump is a good example of this.
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