Natural river pebbles sized 30-50 mm, ideal as under-bed support media in filtration systems for STPs, WTPs, and industrial use.
5 in stock
Description
Pebbles – 30–50 mm are well-graded, naturally rounded river stones used as a sub-base layer in filtration systems like STPs, WTPs, and ETPs. Positioned above the coarsest bottom layer (typically 50–70 mm pebbles), they help create a graded media structure that supports effective backwashing, prevents filter clogging, and ensures long filter life.
These pebbles are screened, washed, and free from organic impurities, making them ideal for use in pressure sand filters, multimedia filters, and other vertical filtration units.
Applications:
Intermediate support layer in media filters
Pressure Sand Filters (PSF)
WTP, STP, ETP filtration vessels
RO plant pretreatment filters
Industrial water treatment filters
Additional information
| Weight | 40 kg |
|---|
Technical Specifications
| Specification | Value |
|---|---|
| Grade | 30–50 mm |
| Material | Natural River Pebble |
| Silica Content | ~85–90% |
| Bulk Density | ~1600–1700 kg/m³ |
| Shape | Rounded, natural |
| Packing Size | 50 kg HDPE woven bags |
| Use | Intermediate support layer |
FAQs
Q1: Where is this pebble layer placed in a filter system?
A: Typically above the 50–70 mm base layer and below sand or anthracite in multi-layer filters.
Q2: Is rinsing required before use?
A: Yes, although it is pre-washed, a quick rinse is recommended to remove transport dust.
Q3: Is this media safe for all types of filters?
A: Yes, it is compatible with STPs, WTPs, ETPs, and industrial filtration vessels.
Q4: How long does this media last?
A: These pebbles are durable and typically last for 5–7 years in most installations.
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