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  Pump Action Screen  

The Pump Action Screen (PAS) is a revolutionary concept in mechanical screenings.

Pump Action Screen for CSO’s

The PAS screen is designed for screening storm water in various applications. The screen will retain all gross solids larger than 6mm in two directions, in the pass forward flow for removal downstream.



Storm Water Retention Tanks


  • 6mm screening in two directions
  • High Solids Retention Value (SRV) of 58%
  • Robust proven components
  • Minimal maintenance
  • No moving parts
  • Modular system for retrofitting through existing manholes
  • Scour system reduces screenings presented to the scree, giving improved screening efficiency
  • Servicing can be carried out without man entry into the chamber
  • Introduction of air reduces oxygen demand of the spill and pass forward flow
  • Auto operation
  • Can be installed in both deep and shallow chambers without effecting performance
  • Available in 300mm and 500mm diameter screen baskets
  • Low power requirements
  • Stainless steel construction (304 & 316)


  • Can screen flows up to 1766l/s as a single screen
  • For larger flows, multiple screens can be installed in parallel


Operation of the new El Sardinero Storm Tank Project

Case Studies

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