Key Features

Hydratron Double Acting Air Driven Liquid HPU’s offer many desirable features:

  • Ability to stall at a predetermined pressure and hold this fixed pressure without consuming power or generating heat
  • No risk of flame or spark
  • Infinitely variable speed/output flowrate control
  • Infinitely variable output pressure control
  • Standard models are suitable for oil or water applications
  • Isolation chamber for Chemical applications
  • No limit or adverse effects in continuous stop/start applications
  • Proven reliability, easy to maintain and robust


  • Air filter, lubricator, pressure regulator, pressure gauge & speed control valve
  • 6” (150mm) diameter panel mounted outlet pressure gauge
  • Pressure release valve with return back to tank
  • Inlet fluid strainer
  • All interconnecting pipework & fittings
  • Robust Stainless Steel Frame as standard


  • Offshore specification available
  • Stroke Counter
  • Outlet Pressure Isolation
  • On board chart recorder
  • Calibration supply reservoir
  • Wheels / castors 

Performance Data

ModelMax Output Pressure
@ 100 psi (7bar) Air Drive
Max Oulet FlowDisplacement/
PsiBarCu Ins/minL/minCu Inscc's