Positive Directional Displacement Pumps
Positive Directional Displacement Pumps
Positive directional displacement pumps are special pumps used to move liquids or gases in a specific direction and at a specific volume. These are pumps that move liquid or gas by capturing it with a moving part, such as a wedge, gear, or piston, and moving it along a channel. These pumps generally move liquids by creating a pressure difference.
However, positive displacement pumps are different from other typical centrifugal pumps. Centrifugal pumps move liquids using centrifugal force, while positive displacement pumps move liquid by creating a volume change.
There are several subtypes of these pumps:
Gear Pumps: These are pumps that carry the liquid in a room where the gears contact each other and move the liquid with the movement of the gears.
Piston Pumps: These are pumps that carry the liquid with the pressure difference created by the pistons moving in the cylinder.
Screw Pumps: These are pumps that advance the liquid using a screw mechanism. For example, archimed screws may fall into this category.
These pumps are often used to transport or process different liquids in industrial and commercial fields, chemical industry, oil and gas industry, food production and similar fields. Each subtype is preferred based on a specific application or liquid handling need.
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