The VortSentry HS is a compact, below grade stormwater treatment
system that uses helical flow technology to enhance gravitational
separation of floating and settling pollutants from stormwater flows.
The small footprint of the VortSentry HS makes it an effective
stormwater treatment option for projects where space is at a premium.
The VortSentry HS accepts a wide range of pipe sizes to treat and
convey a wide range of flows. The unique internal bypass weir allows
flows exceeding the treatment capacity to be diverted within the unit
eliminating the need for an external bypass structure.
How the VortSentry HS Treats Stormwater
- Untreated stormwater enters the VortSentry HS through an inlet pipe or grate inlet.
- Low, frequently occurring storm flows are directed to the
treatment chamber where a tangentially oriented downward pipe induces a
swirling motion in the treatment chamber that promotes the separation
of suspended solids. Trash and floating debris are also captured in the
- Moderate storm flows are directed into the treatment chamber
through a secondary inlet, which allows for capture of floating trash
and debris. The secondary inlet provides for treatment of higher flows
without significantly increasing the velocity or turbulence in the
- Flow exits the treatment chamber through the outlet flow
control, which manages the amount of flow that is treated and helps
maintain the helical flow patterns developed within the treatment
- Flows exceeding the system’s rated treatment flow are diverted away from the treatment chamber by the flow partition.
- Treated stormwater exits the VortSentry HS via the outlet pipe.