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