Parker Hydraulic Group
PC25/PC55 Series Load-Sense Control Valve

Key Features

  • Flow Sharing principle responds to pump over demand, by reducing flow to the selected functions - while maintaining the speed relationship between those functions.
  • Its patented dual-check system ensures that a clean, crisp load-sense signal is sent to the pump. This makes for a very responsive machine, even in cold weather.
  • Compensator efficiency is excellent. This means that the selected flow does not, generally, vary with changes in load.
  • The compensator can efficiently process flows at least equal to the maximum rated flow of the valve.
  • Can accommodate induced loads.
  • Symmetrical work-section housing enables the spool to be inserted into either end of the spool bore.
  • Uses the same port accessories and spool positioners as their open-center counterparts.

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  • Nominal Flow Ratings: PC25 - 45 gpm (170 lpm) PC55 – 70 gpm (265 lpm)
  • Operating Pressure - 4000 psi (275 bar)
  • Exhaust Pressure - 300 psi (21 bar)
  • Margin Pressure - 250 psi (17bar) - recommended
  • Filtration Required (nominal) - ISO 18/14
  • Fluid - Mineral Based Hydraulic Oil
  • Fluid Temperature and Viscosity Range - 20 to 200 F (-29 C to 150 C)
  • Number ofWork-Sections -10