Products > Chemical Process Equipment: Positive Displacement Pumps

Gear

Gear Positive Displacement Pumps. These pumps are fixed displacement, meaning they pump a constant amount of fluid for each revolution. They are one of the most commonly used pumps for hydraulic fluid power applications. There are two main variations; external gear pumps which use two external spur gears, and internal gear pumps which use an external and an internal spur gear. As the gears rotate they separate on the intake side of the pump, creating a void and suction which is filled by fluid. The gears move the fluid to the discharge side of the pump, where the meshing of the gears displaces the fluid.

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