Allweiler Rotating Equipment

Vane Pumps

Our vane pumps are positive displacement rotary units that use rectangular vanes sliding within rotor slots to move fluid through the pump chamber. As the rotor turns, centrifugal force and hydraulic pressure push the vanes outward against the cam housing wall, forming a tight seal that creates and collapses fluid pockets — drawing fluid in through the inlet and displacing it out through the discharge port.

With no internal metal-to-metal contact in the pumping chamber, vane pumps self-compensate for wear over time, maintaining consistent flow and vacuum performance throughout their service life. They are particularly well-suited for low-viscosity, non-lubricating liquids where other pump types may struggle.

Category:
Parameter Value
Typical flow rate range (l/min) Up to 1,500
Max operating pressure (bar) Up to 17
Fluid viscosity range (cSt) 0.2 – 500
Fluid temperature range (°C) -40 to +120
Self-priming capability Yes
Seal options Single mechanical seal or stuffing box

 

Configuration Options

  • Vane configurations available: sliding vane (standard), flexible vane, swinging vane, rolling vane, and external vane
  • Single mechanical seal or stuffing box sealing arrangement
  • Compatible with a range of seal materials depending on fluid compatibility
  • Bare shaft or baseplate-mounted configurations available

Typical Applications

  • LPG and NH₃ bulk transfer and cylinder filling
  • Fuel oil transfer and aircraft deicing fluid handling
  • Solvent and alcohol handling
  • Aerosol propellant transfer
  • Refrigerant circulation

Installation Notes

Vane pumps are self-priming and develop good suction vacuum, making them suitable for installations where the pump is positioned above the fluid source. LPG variants are capable of short dry-run periods. Ensure inlet pipework is adequately sized to avoid cavitation, and verify fluid compatibility with vane and seal materials prior to installation. For solvents and low-viscosity fluids, confirm the selected seal type is rated for the specific fluid.

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