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Vane pumps

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

Pumps are composed of a cartridge type compact element that contains the rotor, vanes, cam ring, and 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, reducing the wear of the pump. The use of a 12-vane rotor reduces the delivery pressure pulsation, suppressing the vibrations and noise level of the pump.

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FV6 fixed displacement vane pumps, with several nominal displacements. Single, double, and triple pumps are available.

This pumps' group is composed of a cartridge element that contains rotor, vanes, cam ring, and support plates. Cartridges are easily removable without disconnecting 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, reducing the wear of the pump. The use of a 10-vane rotor reduces the delivery pressure pulsation, suppressing the vibrations and noise level of the pump.

 
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FV7 fixed displacement vane pumps, with several nominal displacements each. Single, double, and triple pumps are available.

This pump group is composed of a cartridge element that contains a rotor, vanes, cam ring, and support plates. Cartridges are easily removable without disconnecting 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, reducing the wear of the pump. The use of a 10-vane rotor reduces the delivery pressure pulsation, suppressing vibrations, and noise level of the pump.

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RV1D variable displacement vane pumps with mechanical pressure compensator.
 
The pressure compensator keeps the pumps cam ring in the eccentric position with the use of an adjustable load spring. When the delivery pressure equals the pressure, corresponding to the spring setting, the cam ring is moved toward the center instantaneously, adjusting the flow rate to the values required by the plant.
 
Energy consumption is reduced and adequate in every phase of the cycle. The pump group has hydrostatic axial compensation distribution plates that improve the volumetric efficiency and reduce the wear of the components.
 
In zero flow demand conditions, the pump delivers fluid, only to compensate for any possible leaks and pilot lines, keeping constant the circuit pressure.
 
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The PVE pumps are variable displacement vane pumps with a direct pressure regulator.

The pump group is complete with hydrostatic axial compensation distribution plates that improve the volumetric efficiency and reduce the wear of the components.

The pressure regulator adjustable load spring keeps the pump group cam ring in an eccentric position. When the delivery pressure equals the pressure corresponding to the spring setting, the cam ring is moved so to reduce the displacement, adjusting the flow rate to the values required by the plant. In zero flow demand conditions, the pump delivers oil only to compensate for any possible bleedings, keeping the circuit pressure constant.

The PVE pumps are available in four dimensions with maximum displacement from 6,6 to 22,2 cm3/rev and with pressure regulator max setting values up to 35 bar and 70 bar (standard).

 

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RV1P are variable displacement vane pumps with a hydraulic operated pressure compensator that permit instantaneous adjustment of the flow rate according to the circuit requirements. Energy consumption is reduced and adequate in every cycle phase.

The pump is provided with double hydrostatic axial compensation, which improves the volumetric efficiency, and reduces the wear of the components. Both internal paths for inlet and outlet are double.

The pressure compensator keeps the pump's cam ring in the eccentric position with a hydraulically controlled piston in the 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 to compensate for any possible bleedings and pilotings, keeping the circuit's pressure constant.

The compensator's response times are very restrained, such as to allow the removal of the pressure relief valve.

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Variable displacement vane pumps (old series).

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Variable displacement vane pumps with direct pressure adjuster (old series).

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