À palettes

À palettes


DFP - Pompes à palettes à cylindrée fixe

The DFP pumps are fixed displacement vane pumps made in four different sizes, each size having five different nominal displacement. They are available with one pumping element (single pump) or with double pumping element (double pump).

  • The pumping group is composed of a cartridge type compact element that contains the rotor, the vanes, the cam ring and the head disks. The cartridge is easily removable without the need to disconnect the pump from the hydraulic circuit, thus simplifying the maintenance operations.
  • The special elliptical profile of the cam ring, with double suction and delivery chambers one against the other, eliminates the radial thrusts on the rotor, decisively reducing wear of the pump. In addition, the use of a 12-vane rotor reduces the delivery pressure pulsations, suppressing the vibrations and noise level of the pump.
13100 | | | 3D

PVD - Pompes à palettes à cylindrée variable avec compensateur de pression directe

ATTENTION : les pompes PVD 9, 13, 17 et 22 série 30 ne sont plus disponibles.
À la place, la pompe appelée PVD 25, en série 31, est disponible.

Les autres dimensions de la 28 à la 145 demeurent en série 30. 

14100 | | | 3D

PVE - Pompes à palettes à cylindrée variable avec regulateur de pression direct

Nouvelles pompes PVE série 30. Pompes à palette, cylindrée variable, avec régulateur de pression de type direct.
Disponibles en quatre grandeurs avec des cylindrées maximum de 6,6 à 22,2 cm3/tout et avec deux valeurs d’étalonnage maximum du régulateur de pression jusqu’à 35 bars et 70 bars (standard).

14110 | | | 3D

PVA - Pompes à palettes à cylindrée variable avec compensateur de pression piloté

The PVA pumps are variable displacement vane pumps with piloted type hydraulic pressure compensator.

  • They permit instantaneous adjustment of the flow rate according to the circuit requirements.The consequence is that energy consumption is reduced and adequate in every cycle phase.
  • The pumping group is complete with hydrostatic axial compensation distribution plates that improve the volumetric efficiency and reduce wear of the components.
  • The pressure compensator operates with the principle of keeping the cam ring of the pumping group in the eccentric position with use of a piston controlled hydraulically by a pressure pilot stage.
  • When the delivery pressure equals the pressure corresponding to the pilot stage setting, the cam ring is moved toward the center adjusting the flow rate to the plant requirements.
  • In zero flow demand conditions, the pump delivers oil only to compensate any possible bleedings and pilotings, keeping the circuit pressure constant.
  • The compensator response times are very restrained and such as to allow elimination of the pressure relief valve.
  • Also available are the versions with maximum flow adjustment PVA***Q and with the device for selection of two independent pressure values with solenoid valve PVA***M
14200 | | | 3D