It describes how often the filtration surface is mechanically cleared. An internal active brush sweeps the screen continuously, so the surface is regenerated more than 35 times every second — rather than waiting for a periodic backwash or scraper cycle that fires roughly once every three to four minutes. At that frequency a fouling layer never has time to build, which is why the system doesn’t blind when the solids load spikes. The number isn’t a peak rating; it’s the normal operating state of the machine.

Conventional self-cleaning filters clean reactively: the screen fouls, flow or pressure crosses a threshold, and a backwash or scraper cycle fires to recover it. Under a TSS spike that cycle can’t keep up, the screen blinds, and the system alarms. The VelRay X cleans continuously instead of reactively. Crossflow keeps solids in suspension so they don’t settle onto the screen, tapered slot openings stop particles from wedging mid-screen, and the active brush regenerates the surface ~35 times per second. The fouling layer those other systems are designed to recover from never forms in the first place.

The slots are tapered — narrowest at the filtration face and widening behind it. A particle either passes the face and flows clear through the widening channel, or it’s rejected at the surface. The one thing it can’t do is lodge partway in and jam, which is the wedging failure that blinds straight-walled slotted and woven screens during high-solids events. The geometry is a large part of why throughput holds as TSS climbs. Nominal filtration is 20 micron, with a 1/8″ maximum solid size at the inlet.

No. Separation is entirely physical — crossflow filtration, tapered slot geometry, and active brush cleaning. That removes chemical purchase, storage, handling, OSHA compliance, and sludge disposal from the operation, and it avoids the chemistry conflicts that coagulants can create with downstream membranes in reuse and ZLD trains.

It continues uninterrupted. Because cleaning is continuous rather than a discrete backwash event, there’s no stop-flow cycle and no water dumped to drain. That’s the mechanism behind up to 99% water recovery — and unlike systems that quote recovery under ideal conditions, that figure is measured across representative operating periods with all cleaning activity included.

We start by characterizing your influent — TSS levels and variability, particle size distribution, target effluent quality, and downstream sensitivities — and model VelRay X performance against your actual conditions, including your worst-case events rather than average ones. Demo programs are available so you can confirm performance on site before capital commitment. Send your water data to our team to get started.