Support Gravel Media
Support gravel, the lower strata of a filter bed, acts to support the filter medium. The maximum efficiency, the support gravel must possess the necessary attributes of hardness and be rounded or non-angular. Correct gradation and sizing must be calculated to properly support the filter media.
The chemical content is less than 0.0001% of the following: arsenic, cadmium, chlomium, cyanide, copper, nickel, lead, zinc and mercury.
AWWA Standard B100-01 and NSF Standard 61 approved.
Chemical Breakdown
- Acid Solubility: 1.7%
- Porosity: 38.35
- Loss on ignition: 0.69%
- 24-hour absorption: 0.48%
Physical Characteristics
- Color: multi-color
- Bulk Density: 100 lbs./cu. ft.
- Specific Gravity: 2.65+
- Mesh Size: 2.5 in. x 3 mm
- Hardness: 7.0 (Mohs scale)
Product Size | 2½ x 1½ | 1½ x 3/4 | 3/4 x 1/2 | 5/8 x 3/8 | ½ x ¼ | 3/8 x 3/16 | 1/4 x 1/8 | 3/16 x 3/32 | 1/8 x 1/16 | |
---|---|---|---|---|---|---|---|---|---|---|
US MESH | INCH | |||||||||
2 1/2" | 2.500 | 98 | ||||||||
2.0" | 2.000 | 65 | ||||||||
1 1/2" | 1.500 | 6 | 98 | |||||||
1.0" | 1.000 | 1 | 44 | |||||||
7/8" | 0.875 | 24 | ||||||||
3/4" | 0.750 | 5 | 97 | |||||||
5/8" | 0.625 | 1 | 51 | 98 | ||||||
1/2" | 0.500 | 4 | 66 | 98 | ||||||
3/8" | 0.375 | 1 | 4 | 68 | 98 | |||||
1/4" | 0.25 | 1 | 6 | 18 | ||||||
4 | 0.19 | 1 | 4 | 67 | 99 | |||||
5 | 0.16 | 35 | 90 | |||||||
6 | 0.13 | 8 | 64 | 98 | ||||||
1/8" | 0.13 | 6 | 18 | 96 | ||||||
7 | 0.11 | 2 | 10 | 75 | ||||||
8 | 0.09 | 6 | 48 | |||||||
10 | 0.08 | 2 | 18 | |||||||
12 | 0.07 | 3 | ||||||||
14 | 0.06 | 1 |
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