Positive Displacement Sliding Vane Pumps

Vane Pump Overview

While vane pumps can handle moderate viscosity liquids up to 500 cPs, they excel at handling low viscosity liquids such as LP gas (propane), ammonia, solvents, alcohol, fuel oils, gasoline and refrigerants. Vane pumps have no internal metal-to metal contact and self compensate for wear, enabling them to maintain peak performance on these non-lubricating liquids. Vane pumps are available in a number of vane configurations including sliding vane, flexible vane, swinging vane, rolling vane, and external vane.  Vane pumps are noted for their dry priming, ease of maintenance, and good suction characteristics over the life of the pump. Moreover, our vane pumps can handle fluid temperatures from -100°C to +200°C and differential pressures to 14 Bar. Each type of vane pump offers unique advantages.  For example, external vane pumps can handle large solids.  Flexible vane pumps, on the other hand, can only handle small solids but create good vacuum.  Our ranges of sliding vane pumps can run dry for short periods of time and handle small amounts of vapour. How Vane Pumps Work Applications

Vane Pump Advantages

Vane pumps handle thin liquids at relatively higher pressures
Vane pumps compensate for wear through vane extension
Some models can run dry for short periods
Vane pumps have good suction lift capabilites
Vane pumps give smooth, pulseless, accurate output

Products in the Range - Click on images below for full picture and further product information

3M Vane Pump Leak free magnet drive sliding vane pumps in polypropylene, PVDF and stainless steel 4 series of vane pumps Capacities to 3,000 litres/hour Differential pressures to 14 Bar Multistage options available for pressures to 25 Bar   More Info on 3M Vane Pump> Download Brochures>

Viking Vane Pump Conventionally sealed sliding vane pumps in hardened stainless steel for corrosive thin liquids 6 sizes of vane pumps Capacities to 36 m3/hour Differential pressures to 14 bar Liquid temperatures to 135° C Short term dry run capability   More Info on Viking Vane Pump> Download Brochures>

How Vane Pumps Work (courtesy of Viking Pump Inc.)

Despite the different configurations, most vane pumps operate under the same general principle described below.

1) A slotted rotor is eccentrically supported in a cycloidal cam.  The rotor is located close to the wall of the cam so a crescent-shaped cavity is formed.  The rotor is sealed into the cam by two sideplates.  Vanes or blades fit within the slots of the rotor..  As the rotor rotates (yellow arrow) and fluid enters the pump, centrifugal force, hydraulic pressure, and/or pushrods push the vanes to the walls of the housing.  The tight seal among the vanes, rotor, cam, and sideplate is the key to the good suction characteristics common to the vane pumping principle.

2) The housing and cam force fluid into the pumping chamber through holes in the cam (small red arrow on the bottom of the pump).  Fluid enters the pockets created by the vanes, rotor, cam, and sideplate.

3) As the rotor continues around, the vanes sweep the fluid to the opposite side of the crescent where it is squeezed through discharge holes of the cam as the vane approaches the point of the crescent (small red arrow on the side of the pump).  Fluid then exits the discharge port.

Applications

• Aerosol and Propellants
• Aviation Service - Fuel transfer, De-icing
• Auto Industry - Fuels, Lube, Refrigeration coolants
• Bulk transfer of LPG and NH3
• LPG Cylinder filling
• Alcohols
• Refrigeration - Freons, Ammonia
• Solvents
• Aqueous solutions

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