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Duplomatic PVA – Variable Displacement Vane Pumps with Pilot Adjuster (Sizes 72 – 145)

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Duplomatic Oleodinamica represents the real alternative in the hydraulics market.

Duplomatic’s wide range of products and worldwide service network, grant its users a real competitive advantage.The Duplomatic 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

Product Specification

Description 72 90 115 145
Displacement  50 cm³/rev 60 cm³/rev 80 cm³/rev 100 cm³/rev
Nominal Flow Rate (at 1450 rpm) 72,5 l/min 91,3 l/min 116 l/min  145 l/min
Maximum Operating Range 160 bar 150 bar 150 bar 150 bar
Pressure Adjustment Range  30 ÷ 160 bar 30 ÷ 150 bar  30 ÷ 150 bar 30 ÷ 150 bar
Maximum Pressure on Drain Port  1 bar  1 bar  1 bar  1 bar
Rotation Speed Range  800 ÷ 1800 rpm 800 ÷ 1800 rpm 800 ÷ 1800 rpm 800 ÷ 1800 rpm
Rotation Direction Clockwise (seen from the Outlet Shaft Side) Clockwise (seen from the Outlet Shaft Side)  Clockwise (seen from the Outlet Shaft Side) Clockwise (seen from the Outlet Shaft Side)
Loads on the Shaft  Loads Radial and Axial not Allowed  Loads Radial and Axial not Allowed  Loads Radial and Axial not Allowed  Loads Radial and Axial not Allowed
Maximum Applicable Shaft Torque 400 Nm 740 Nm 740 Nm 740 Nm
Ambient Temperature Range -20 / +50 °C -20 / +50 °C  -20 / +50 °C -20 / +50 °C
Fluid Temperature Range  -10 / +70°C  -10 / +70°C  -10 / +70°C  -10 / +70°C
Recommended Viscosity 25 ÷ 50 cSt 25 ÷ 50 cSt  25 ÷ 50 cSt 25 ÷ 50 cSt
Mass 33 kg 45 kg 45 kg  45 kg

Duplomatic – PVA – Variable Displacement Vane Pumps with Pilot Adjuster – Data Sheet

Additional Information

Hydraulic Pump Units

Vane Pump

Hydraulic Vane Pumps

Variable Volume Vane Pump

Manufacturer

Duplomatic

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