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Selected Sand and Gravel


What is the application of selected sand in water treatment?

Selected sand is used to filter the suspended solids that are in your feed water. Mainly the selected sand is used as a pre-treatment to your water treatment system. By removing the suspended solids, the fouling in other systems are reduced.

Benefits of selected sand

• High uniformity coefficient, Low pressure drop within the column
• Great for pre-treatment, reduce particle size down to 50 micron

Quality of our selected sand

Our selected sand is uniform in size. The uniformity of our sand reduces the pressure drop in the system. The water flows better in the pressure column. Our sand comes from the chaophraya river, the highest grade quality of sand.

Specification for Selected Sand

Type Size (mm.)
Selected Sand No. 1 0.5 – 0.8
Selected Sand No. 2 1.0 – 2.0
Selected Gravel No. 3 3.0 – 5.0
Selected Gravel No. 4 10.0 – 15.0
Selected Gravel No. 5 20.0 – 25.0
Selected Gravel No. 6 25.0 – 38.0


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