Gear Pumps

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External gear pumps & helical and internal gear pumps

Gear pumps are a type of positive displacement pump, which move fluid by the operation of rotating gears with intermeshing teeth. Gear pump is a popular choice than centrifugal pump in applications concerning the movement of quite viscous, clean fluids and where the installation is relatively high pressure. Whilst suited to this applications, we recommend screw pumps as a more efficient pumping technology.There are a number of types of gear pumps including internal eccentric gear pumps and external helical and modular gear pump.

Applications where gear pumps are installed include:

Hydraulic fluid power
Petrochemicals
Fuel oil transfer
Chemical mixing and blending
Small scale hot oil circulation
Paint and ink transfer
Machine tool lubrication
Solvent transfer
Food products such as chocolate and peanut butter

Gear pumps ability to handle higher pressures and higher viscosity liquids than a centrifugal pump,its also benefits from a controllable, smooth flow and self-priming capabilities. In addition to this, a gear pump has a lower NPSH making them suitable for applications where suction lift is required. It must be noted that the fluid must have self-lubricating properties for a gear pump to operate efficiently.
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