PISTA® VIO™ Variable Inlet / Outlet


The PISTA® VIO™ Grit Removal System provides unprecedented application flexibility and superior grit removal efficiencies with a design that allows for full variability of the inlet and outlet channels.

PISTA® VIO™ features a hydraulic vortex grit chamber design that utilizes a new baffle system.

This type of grit removal system —one of the first of its kind in the industry—provides the ability to design the inlet and outlet channels at any variable angle up to the full 360° of the chamber. Designers can flexibly arrange the system to fit existing sites, or maximize space during construction on new sites.

This new baffle system, in addition to providing application flexibility, also offers superior grit removal efficiencies. 

Capacitiesup to 100 MGD (378,500 cmd)
ArrangementVariable inlet / outlet up to 360°
Removal %95% down to 140 mesh (105 µ)
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1)  Influent Flume
Directs the flow toward the wall of the chamber to promote vortex movement and the necessary velocities.
2) Underdrive
Supports influent flow velocity, especially helpful in low flow applications.
   
3) Axial-flow Propellers
Redesigned axial-flow propellers have been improved to create better lift in the deeper chamber.
4)  Effluent Flume
Designed to minimize the harmful weir effect that can contribute to grit bypass in these types of systems.

 

• Baffle system creates the effective vortex flow pattern required to efficiently
remove grit — up to 95% of 140 mesh

• Design inlet and outlet channels at any variable angle up to the full 360° of the chamber.

• Influent flume and underdrive promote necessary velocities, aiding low flow applications.

• Effluent flume counteracts the weir effect, reducing grit bypass.
 

AttachmentSize
PDF icon 953_PISTA-VIO-e.pdf422.86 KB

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