Support Gravel



Support  gravel is used in the treatment of potable water, sewage and industrial  effluents. It is installed as a support layer beneath the filtration  media (pumice, sand, garnet or anthracite) in various filtration  systems. The support gravel aids in the distribution of air during the  backwash phase and allows the filter to remain free draining under heavy  loadings.

Technical Data Sheet

1. Product Name / Reference

Support Gravel

2. Main Intended Use

Support layer for water filtration media

3. Chemical Description

Compound Element Chemical Formula Typical Content
Silicon Dioxide SiO2 97.00%
Ferric Oxide Fe2O3 1.73%
Aluminium Oxide Al2O3 0.32%
Potassium Oxide K2O 0.05%

4. Physical Properties

a. Bulk Density 1.56 – 1.60 g/cm3
b. Specific Gravity 2.65 g/cm3
c. Solubility in HCL 2% maximum
d. Loss on Ignition 1% maximum
e. Hardness 6 – 7 Mohs

5. Sizes Available

Grade Size
BS 5/8 2.00 – 3.35 mm
BS 4/10 1.70 – 4.00 mm
BS 2/6 3.00 – 6.00 mm

6. Packaging

Packed in 25kg sacks and 1000kg, 1250kg and 1500kg IBC big bags.

Water Filtration Yes
Odour Control Yes
Green Roof Systems No
Cosmetics Scrubs Yes
Dental Treatments Yes
PCB Scrubbing No
Glass Treatments Yes
Metal Finishing Yes
Lightweight Precast Concrete No
Odour Treatment No
Seawater Reverse Osmosis Yes
Automotive Polish No
Effluent Treatment Yes
Horticulture Yes
Construction No
Hand Cleaner Yes
Paints & Coatings Yes
Lightweight Plasters Yes
Salt Saturator Yes

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