The amount of filtration you need depends on what type of irrigation you have. For example, drip irrigation systems need a higher degree of filtration in order to protect the emitters from clogging. Amount of filtration is measured by the mesh size of the screen or maximum size in microns of an object that can pass through the filter. For drip system 100 mesh or 150 micron recommended.
Sprinkler system can handle a good size grain of sand without clogging, however removing that is still advantageous as it will eliminate the wear on the systems caused by the sand grain as it passes through. For sprinkler system 100 micron ( 150 mesh ) is recommended to remove particles.
| Micron | Mm | Mesh |
| 15 | 0.015 | 1000 |
| 25 | 0.025 | 600 |
| 30 | 0.03 | 500 |
| 40 | 0.04 | 350 |
| 50 | 0.05 | 300 |
| 80 | 0.08 | 200 |
| 100 | 0.1 | 155 |
| 100 | 0.1 | 150 |
| 130 | 0.13 | 120 |
| 150 | 0.15 | 100 |
| 180 | 0.18 | 80 |
| 200 | 0.2 | 75 |
| 250 | 0.25 | 60 |
| 300 | 0.3 | 50 |
| 500 | 0.5 | 30 |
| 800 | 0.8 | 20 |
Values in the above table are rough equivalent. Micron is a standard metric measurement, whereas mesh is rather subjective, especially for values above 300. Micron is the accurate measurement for use in determining the size of particle that can or can’t pass through the filter.
See also :
How much filtration do you need for your irrigation systems?
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