Premium
Silex Filter Media

High-density support media engineered for water treatment filter beds and industrial gravel-pack systems.

Technical Matrix
Filter Bed Support

The Foundation of
Multi-Media Filtration

Silex Filter Media is a naturally occurring, high-silica gravel prized for its exceptional hardness and chemical stability. Unlike standard pea gravel, silex is carefully hydro-fractionated to ensure specific grain sizes required for industrial filter bed support.

As direct manufacturers and exporters, we provide silex media that is free from organic matter and low in iron. It acts as the critical bottom layer in sand and anthracite filters, supporting the finer media while ensuring uniform water distribution during service and backwash cycles.

Structural Support

Prevents media migration

98% SiO₂ Purity

Chemically inert substrate

Silex Filter Media
Mohs 7

Extreme Hardness

Technical Matrix

Silex Media
Performance Data

Smart Well Fluid silex is hydro-fractionated to meet AWWA B100 requirement for filter support media.

Custom Fractions Available

2-4mm, 3-6mm, 6-12mm, 12-25mm and larger boulders.

Property Name High-Spec Silex Standard Utility Grade
SiO₂ Content 98.5% – 99.2% 97% Min
Hardness (Mohs Scale) 7.0 Typical 7.0 Typical
Specific Gravity 2.6 – 2.65 g/cc 2.6 g/cc Min
Bulk Density 1600 kg/m³ Typical 1500 kg/m³ Min
Acid Solubility ≤ 2.0% Max ≤ 4.0% Max
Uniformity Coefficient ≤ 1.6 Max ≤ 2.0 Max
Engineering Factors

Designed for
Structural Bed Integrity

High Void Space

The sub-angular shape of Silex ensures optimal void volume, facilitating better hydraulic distribution without excessive head-loss.

Zero Leaching

Processed to remove soluble minerals, ensuring zero impact on the chemical composition of the treated water.

Uniform Stratification

Precision sizing prevents intermixing of filter layers, preserving the operational longevity of your treatment facility.

Foundational Bulk Supply

Supplying massive volumes for municipal water intake and industrial ETP systems worldwide.

Sector Deployment

High-Capacity Use Cases

Water Purification

Bottom support layer for rapid sand and gravity filters.

SWRO Intake

Pre-filtration boulders for seawater reverse osmosis plants.

Borewell Pack

Gravel-pack substrate for industrial and municipal borewells.

ETP/STP Plants

Mechanical support for wastewater treatment media beds.

Technical FAQ

Silex Media
Expert Guidance

Need advice on the correct gravel sizing for your specific underdrain system? Connect with our material engineers directly.

Technical Factory Line

Direct Factory Support

Standard pea gravel often contains high levels of clay, organic impurities, and carbonate minerals that can leach into and contaminate your process water. Silex is a high-silica crystalline gravel (98%+ SiO₂) that is chemically inert and far harder, ensuring multi-year stability.

Silex acts as the mechanical foundation. It sits at the very bottom of the filter vessel, protecting the underdrain nozzles from being clogged by finer sand while ensuring the water spreads evenly across the entire filter bed during the filtration and backwash cycles.

Yes. As a direct manufacturer, we hydro-fractionate our silex into precise ranges like 2-4mm, 4-8mm, and 8-16mm. This precision allows engineers to design layers that perfectly prevent "fines" from migrating into the underdrain.

India’s Strategic Source for Premium Silex Filter Support Media

Silex filter media remains the foundational component of global water treatment infrastructure. Its role in supporting multi-layer filter beds—specifically when using anthracite and silica sand—is essential for preventing media migration and ensuring hydraulic efficiency. The high density and chemical resistance of silex make it the ideal substrate for massive municipal water intakes and power-plant desalination pretreatment systems.

Smart Well Fluid stands as a direct manufacturer in India, utilizing dedicated hydro-classification and washing plants to deliver silex that exceeds AWWA and ISO standards. Our commitment to 98%+ SiO₂ purity ensures that our clients in the refinery, construction, and municipal sectors receive a foundational media that does not degrade, leach, or settle unexpectedly. With bulk logistical capacity from primary Indian ports, we are your long-term supply partner for industrial-scale silex media.