100% Employee Owned, Founded 1954

100% Employee Owned, Founded 1954

Hydraulic Fluid Cleanliness Code Chart

Pumps

Pressure < 2000 PSI < 140 Bar < 3000 PSI 210 Bar 210 Bar
Fixed Gear

20/18/15

19/17/15

18/16/13

Fixed Vane

20/18/15

19/17/14

18/16/13

Fixed Piston

19/17/15

18/16/14

17/15/13

Variable Vane

19/17/15

18/16/14

17/15/13

Variable Piston

18/16/14

17/15/13

16/14/12

Valves

Pressure 3000 PSI 210 Bar > 3000 PSI > 210 Bar
Directional (solenoid)

20/18/15

19/17/14

Pressure (modulating)

19/17/14

19/17/14

Flow Controls (standard)

19/17/14

19/17/14

Check Valves

20/18/15

20/18/15

Cartridge Valves

20/18/15

19/17/14

Screw-in Valves

18/16/13

17/15/12

Prefill Valves

20/18/15

19/17/14

Load-sensing Directional Valves

18/16/14

17/15/13

Hydraulic Remote Controls

18/16/13

17/15/12

Proportional Directional (throttle) Valves

18/16/13

17/15/12

Proportional Pressure Controls

18/16/13

17/15/12

Proportional Cartridge Valves

18/16/13

17/15/12

Proportional Screw-in Valves

18/16/13

17/15/12

Servo Valves

16/14/11

15/13/10

Actuators

Pressure < 2000 PSI < 140 Bar 3000 PSI 210 Bar > 3000 PSI > 210 Bar
Cylinders

20/18/15

20/18/15

20/18/15

Vane Motors

20/18/15

19/17/14

18/16/13

Axial Piston Motors

19/17/14

18/16/13

17/15/12

Gear Motors

21/19/17

20/18/15

19/17/14

Radial Piston Motors

20/18/14

19/17/15

18/16/13

Swashplate Design Motors

18/16/14

17/15/13

16/14/12

Hydrostatic Transmissions

Pressure < 2000 PSI < 140 Bar 3000 PSI 210 Bar > 3000 PSI > 210 Bar
Hydrostatic Transmissions (in-loop fluid)

17/15/13

16/14/12

16/14/11

Bearings

Ball Bearing Systems

15/13/11

Roller Bearing Systems

16/14/12

Journal Bearings (high speed)

17/15/13 >400 RPM

Journal Bearings (low speed)

18/16/14 <400 RPM

General Industrial Gearboxes

17/15/13

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