How it Works
Dry weather flow pass through the Hydro-Jet Screen chamber (red arrow) via the dry weather channel and continues to a downstream treatment plant (brown arrow).

During wet weather events, the flow increases as runoff drains into the combined sewer system. The water level in the dry weather flow channel rises as the Reg-U-Flo® Vortex Valve limits the flow passed through the continuation flow outlet.

Water in the dry weather flow channel rises until it spills over the weir wall and flows down through the angled self-cleansing screen.

As the water level under the screen rises to the crest of the siphon, the pocket of air trapped between the water surface and the screen creates a backwash mechanism. Debris is lifted off the screen and carried down the screenings channel, which is returned to the continuation flow (green arrow).

The siphon breaks, discharging the screened effluent (blue arrow) to the receiving water body while drawing the water level in the overflow spillway down.