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Duplomatic PVA – Variable Displacement Vane Pumps with Pilot Adjuster (Sizes 22 – 56)

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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 22 28 35 45 56
Displacement 16 cm³/rev 20cm³/rev  25 cm³/rev 31,5 cm³/rev  40 cm³/rev
Nominal Flow Rate (at 1450 rpm)  23,2 l/min   29 l/min 36,2 l/min 45,6 l/min 58 l/min
Maximum Operating Range 160 bar 160 bar 160 bar 160 bar 160 bar
Pressure Adjustment Range 30 ÷ 160 bar 30 ÷ 160 bar 30 ÷ 160 bar 30 ÷ 160 bar  30 ÷ 160 bar
Maximum Pressure on Drain Port 1 bar  1 bar  1 bar  1 bar 1 bar
Rotation Speed Range 800 ÷ 1800 rpm 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) 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  Loads radial and Axial not Allowed
Maximum Applicable Shaft Torque  197 Nm 197 Nm 197 Nm 400 Nm  400 Nm
Ambient Temperature Range -20 / +50°C -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 -10 / +70°C
Recommended Viscosity  25 ÷ 50 cSt  25 ÷ 50 cSt  25 ÷ 50 cSt  25 ÷ 50 cSt  25 ÷ 50 cSt
Mass 13 kg 13 kg 13 kg 33 kg 33 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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