Recommended Cleanliness Levels

  • ISO Codes for Fluid Power Components
  • Gear Pump – 19/17/14
  • Piston Pump/Motor – 18/16/13
  • Vane Pump – 19/17/14
  • Directional Control Valve – 19/17/14
  • Proportional control Valve – 18/16/13
  • Servo Valve – 16/14/11

Cleanliness Guidelines Based on Pressure

  • Low Pressure – Manual Control – 20/18/15 or better
  • Low to Medium Pressure – Electro-hydraulic Controls – 19/17/14 or better
  • High Pressure – Servo Controlled – 16/14/11 or better