System design
Engineering the system
around your flow.
LonGeVa systems are not chosen from a shelf — they are sized. This tool applies the Watch Water design ladder to your flow and returns the media charge, vessel, bed geometry and connection our engineers work from.
How the sizing works
Three rules decide the whole system
Everything the designer returns follows from these, applied to the flow your installation actually needs.
333 BV/h design rate
Three litres of LonGeVa media for every m³/h of design flow — the rate that gives 10.8 seconds of empty bed contact time.
Three times the bed volume
The vessel is sized at three times the media charge, leaving 67% freeboard so the bed can expand freely in upflow service.
Simplex, upflow, in/out head
No backwash, no regeneration, no control valve, no salt and no electricity. One vessel, one media charge, continuous service.
LonGeVa system designer
Size a LonGeVa Simplex Upflow system
Enter your design flow, or let the tool derive it from your building. It returns the media charge, vessel, bed geometry, contact time and connection that Watch Water engineers work from — 3.0 litres of LonGeVa media per m³/h at 333 BV/h, with 67% freeboard for upflow.
Common steps:
Design flow
2 m³/h
33 litres per minute
LonGeVa media
6 L
At 333 BV/h design rate
Vessel
07x35
Ø 178 mm · 20.4 L shell
- Simplex upflow with in/out head: no backwash, no regeneration, no control valve, no salt and no electricity.
Indicative sizing only. Final specification is confirmed by Watch Water GmbH against feed-water analysis, pressure and installation conditions. Performance depends on water quality, contact time and correct vessel selection.
Next step
Send us your water analysis
Our engineers in Mannheim will read your laboratory report and confirm the media charge, vessel and connection for your installation.