Product Description

The range Gravel and Support Pebble that we offer, is spherical in shape and allows even distribution in support beds and good flow. It is quite similar to Filter Sand in properties, but the only difference is its shape. These are free from calcium and are very effective in the case of softeners, as this helps in maintaining the quality. Support gravel acts as a support for the filter media and forms the lower levels of the filter bed. Further, for supporting the media, the size needs to be calculated and the correct gradation is required. Water Filter Gravel or the Support Pebble is ideal for filtration as it provides high purity and consistent quality. These are double washed to remove all clay, shale and inorganic impurities and thus, ensure a clean and quality output.

Comparison of the Physical Properties:

 Washed & Graded Water Filter
Gravel/Support Pebble
Gravel (General Grade)
  • Yellow/brown
  • Grey/Off White
  • Spherical
  • Sub-Angular
  • 7-8 on MOH scale
  • 6 – 7 on MOH scale
Bulk Density:
  • 1680 kgs per cubic meters
  • 1590 kg per cubic meters
Specific Gravity:
  • 2.65
  • 2.

Following are the key specifications:


Contents {e1ca05648954c827bd0659ec4a466f6940210b90519c3b0ee2d424b3f4a5f43c}Filter SandFilter Gravel/Support PebbleSilica Sand
Silica (SiO2)96.0792.8794/99
Iron Oxide (Fe23)1.573.420.05
Loss on Ignition (L.O.I.)0.891.150.18
Aluminum Oxide (Al23)0.71.450.12
Magnesium Oxide (MgO)0.340.6Traces
Calcium Oxide (CaO)0.230.24Nil
Titanium Dioxide (TiO2)0.060.04
Sodium Oxide (Na2)0.050.05
Potassium Oxide (K2)0.040.06
Sulfur Trioxide (SO3)0.040.04
Barium Oxide (BaO)0.010.01