Variable displacement

RV1D - Variable displacement vane pumps with direct pressure adjuster

  • The RV1D pumps are variable displacement vane pumps with mechanical pressure compensator.
  • The pressure compensator keeps the cam ring of the pumping group in the eccentric position with 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 wear of the components.
  • In zero flow demand conditions, the pump delivers fluid only to compensate any possible leaks and pilot lines, keeping constant the circuit pressure.
  • The compensator response times are very low such as to make unnecessary the pressure relief valve.
[WPSM_AC id=29]

PVE - Variable displacement vane pumps with direct pressure regulator

New vane pumps PVE series 30. They are variable displacement vane pumps with direct pressure regulator.

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).

The PVE pumps are variable displacement vane pumps with direct pressure regulator.
  • The pump group is complete with hydrostatic axial compensation distribution plates that improve the volumetric efficiency and reduce wear of the components.
  • The pressure regulator adjustable load spring keeps the pump group cam ring in 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 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).
[WPSM_AC id=29]

RV1P - Variable displacement vane pumps

  • RV1P are variable displacement vane pumps with 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  pumping  group  is  provided  with  double  hydrosta ic  axial compensation, that improves the volumetric efficiency and reduces wear of the components. Both internal paths for inlet and outlet are double.
  • The pressure compensator operates keeping the cam ring of the pumping group in the eccentric position by a piston hydraulically controlled 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 such as to allow the removal of the pressure relief valve.
[WPSM_AC id=29]