Multiple Inlet flow regulator

Abstract

A multiple inlet flow regulator with a restricted low-level inlet and upper-level overflow inlet is used to modify a new or existing storm water catch basin to regulate the flow of storm water from the catch basin into the sewer system. During periods of heavy rains and high flows into the catch basin, this flow regulator will allow the catch basin to serve as a temporary storage tank for storm water. The construction of these flow regulators can be accomplished using a variety of off-the-shelf components or custom fabrication, to achieve the desired effect of restricting the discharge from each catch basin in a combined sewer or storm water system as much as practicable without resulting in overflows onto the roadways. Key components include: restricted low level inlet that can be adapted in size to meet specific low flow conditions, upper level inlet sized to allow for the maximum discharge from the catch basin to prevent overflows onto the roadway, connections to the existing catch basin structure and covers to prevent floatable debris from discharging from the catch basin into the sewer system.

1 . A multiple inlet flow regulator adapted for use in a storm water catch basin having a low level inlet with an orifice sized to the individual catch basins requirements in a given storm water or combined sewer system with said orifice designed to regulate the discharge of storm water out of the catch basin as to extend the time required for the storm water entering the basin to discharge from the basin into the storm water or combined sewer system, thereby allowing the catch basin to act as a temporary retaining structure. The result of the flow regulation is a reduction in the peak discharge from both individual catch basins and systems of catch basins as shown in  FIG. 12 . 
     
     
         2 . A multiple inlet flow regulator adapted for use in a storm water catch basin as described in  claim 1  with an upper level inlet to limit the level of storm water retained in the basin to prevent the basin from overtopping and flooding the surface above the catch basin structure. 
     
     
         3 . A multiple inlet flow regulator adapted for use in a storm water catch basin as described in  claim 1  with a low level inlet screen to prevent clogging and floatables in the catch basin structure from discharging into the storm water or combined sewer system. 
     
     
         4 . A multiple inlet flow regulator adapted for use in a storm water catch basin as described in  claim 1  with a upper level inlet screen to prevent clogging and floatables in the catch basin structure from discharging into the storm water or combined sewer system.