Vane Pumps

Positive Displacement: Rotary Pump — A Vane Pump is a particular type of positive displacement pump. Its principle of operation is to use the back-and-forth movement of rectangle-shaped vanes inside slots to move fluids. They are sometimes also referred to as sliding vane pumps.

While vane pumps can handle moderate-viscosity liquids, 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 (left), 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.

Operating Principles

Vanes Pressurize The Fluid — 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 side plates. Vanes or blades fit within the slots of the impeller. As the rotor rotates 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.

The housing and cam force fluid into the pumping chamber through holes in the cam. Fluid enters the pockets created by the vanes, rotor, cam, and sideplate.

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.

Features & Benefits

Vane pumps efficiently handle thin liquids at high pressures, with self-compensating wear and good vacuum capabilities.

Handles thin liquids at relatively higher pressures
Compensates for wear through vane extension
Sometimes preferred for solvents
LPG can run dry for short periods
Can have one seal or stuffing box
Develops good vacuum

Industrial Vane Pump Applications

Aerosol and Propellants
Fuel Transfer & Deicing
Bulk Transfer of LPG & NH3
LPG Cylinder Filling
Alcohol and Solvent Handling

INDUSTRIAL VANE PUMP BRANDS WE SELL, STOCK & SERVICE

All-Pumps has an extensive range of Vane Pumps from the world’s most trusted manufacturers. Spare parts are also available for emergency cases. We also have trained and experienced staff who can be dispatched to the field for quick and effective Vane pump servicing.

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