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NAS VALUE / ISO CODE PATCH COMPARISON CHART 

 

 

ISO 4406 CONTAMINATION CHART

 

The cleanliness of your Hydraulic Fluid is very crucial to the trouble free and cost effective operation of your hydraulic system.  Hydraulic components are very expensive and need special consideration when selecting and filtering this fluid.

 

ISO 4406 code is a standard that is recognized in the industry.  Certain recommended fluid cleanliness quantities are necessary to realize the best performance and cost saving operation of your Hydraulic System

 

Determine the required standard of filtration you require from the chart below

 

Pumps

Less Than 2000 PSI

2000 to 3000 PSI

3000 + PSI

Fixed Vane

18/15

17/14

16/13

Fixed Piston

17/15

16/14

15/13

Variable Piston

16/14

15/13

14/12

Valves

2000 PSI

3000 + PSI

Directional (solenoid)

18/15

17/14

Pressure Control (modulating)

17/14

17/14

Flow Control (standard)

17/14

17/14

Proportional Flow Controls

15/13

15/13

Servo Valves

14/11

13/10

 

Cylinders / Motors

1000 PSI

2000 PSI

3000 + PSI

Actuating Cylinders

18/15

18/15

18/15

Axial Piston Motors

17/14

16/13

15/12

Radial Piston Motors

18/14

17/13

16/13

 

Suggested guidelines only! Precise sampling practices must be followed to insure accurate tests.

More Than

Up to and Including

Number Scale

5000

10000

20

2500

5000

19

1300

2500

18

640

1300

17

320

640

16

160

320

15

80

160

14

40

80

13

20

40

12

10

20

11

5

10

10

2.5

5

9

   

 More than 70% of Hydraulic Failures are caused by contaminants in the oil.

 Heavily contaminated oil can reduce power by as much as 15-20%, slowing machine response and taking longer to perform an operation.

By following a few basic tips, the life of piston rods, seals, valves and pumps can be more than doubled.

By maintaining the hydraulic fluid in "as-new" condition, the life of the same components can be increased tenfold.

                                             

An abrasive particle passing through the system scrapes off further particles. Larger ones join the original to create a mass of wear catalysts, smaller ones become silt which builds up on metal surfaces to clog oil flow and cause sticking valve components. In-line filters do not remove silt, (particles below 15 micron) and do not remove water.

The benefits are:

A dramatic reduction in component wear(seals, piston rods, pumps,etc)

A reduction in the incidence of sticking and worn valve components.

Extended life of in-line oil filters.

An end to the need to change hydraulic fluids.

 

filtration

                USE A KLEENOIL MICRON FILTRATION UNIT 

                 TO TRANSFER NEW OIL TO A SYSTEM  

 

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