Top-notch constant pressure pumps

PZ-series: top-notch constant pressure pumps

Wimmer constant pressure pumps are first choice for high pressure systems. Our PZ series are no exception. They are robust and up for every challenge. With an operating pressure up to 700 bar they are perfectly fit for the job. Drive through shafts allow a combination with gear pumps or multiple piston pumps as well.


  • 500 Bar / 700 Bar
  • 0,28 to 10,05 cm³/rev
  • High volumetric efficiency (up to 98%)
  • Wide speed range (100 > 3 000 rev/min)
  • Combination with gear pump possible
  • 1 to 5 Pressure outputs possible (depending on n° pistons)
  • Low pulsation, low noise level
  • Self-priming and venting
  • Offshore versions available (Marine version)


  • Size 2
  • Light weight compact version
  • High-strength aluminum body and piston-cover
  • Modular concept (easy to replace piston assembly)
  • Customized assembly possible
  • Marine version = FPM seals + special coated external parts


  • Clamping device
  • Remote handling tools (rescue, cutting, punching,…)
  • Accumulator charging units
  • Lifting systems
  • Compact presses
Technical data
Hydraulic fluid Mineral or synthetic oil according DIN 51524 (BIO, other on demand)
Viscosity range 10 to 220 mm²/s
Recommended oil ISO VG 10 to 68 cSt (conf. DIN 51 519)
Filtration According ISO/DIN 4406 17/15/12 (NAS 1638 class 6)
Fluid temperature range -30 to +80°C (attention to the viscosity range)
Ambient temperature range -40 to +60°C
Speed range 100 to 3 000 rev/min
Direction of rotation Bi-directional
Suction height max 500mm
Operation pressure on suction port -0,2 Bar to 0,5 Bar
Max pressure on output port 250, 500 Bar or 700 Bar (depending on piston size and version)
Axial force on driving shaft Not allowed
Radial force on driving shaft on request
Port connections Via fittings ISO 228/1 (BSP), other on demand)

Download our catalogue

Don't hesitate to download our newest catalogue. In this catalogue we have listed our different pumps with an overview of all specifications and datasheets.

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