Technical Tools
Size the bed before you ask for a price
Three calculators built from the way our technical team actually specifies. Every figure is derived from your inputs and shows the assumption behind it.
- Media Selection Guide
Four questions to a recommended bed
Answer these the way you would describe the duty to an engineer. The recommendation comes back with the reasoning, not just a parts list.
Open the tool - Bed Calculator
Vessel dimensions to tonnage and bag count
Enter the vessel diameter and your layer schedule. You get volume, mass, bag counts and — if you supply the design flow — the resulting filtration rate.
Open the tool - Gradation Comparison
Every grade we make, on one scale
Particle size ranges across the full catalogue, plotted logarithmically so silica flour and support gravel fit on the same axis.
Open the tool
These are sizing aids for enquiry and budgeting, not a filter design. Final layer depths, freeboard and backwash rates follow from the underdrain type, design filtration rate and target effluent quality.
Want the design reviewed rather than estimated?
Send the vessel drawing, the design flow and the target effluent quality. Our technical team will return a bed schedule you can put in a submittal.