Japan Platform for Redesign: Sustainable Infrastructure (JPRSI)

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Open Siphon Filter (OSF)

Technology / Service Summary

Open siphon filter (OSF) is a gravity-type open filtration equipment using the siphon mechanism.
Equipped with the original backwash storage tank and using the siphon tube, it enables to reduce power consumption and manpower, also easy operation control.


Mainly used for Water Supply Plant (Public/Private sector) and industrial water treatment plant as gravity type sand filter.


With equipped siphon tube, reduce power consumption and manpower, also make it easier to operate.



Controlled Substance

Applicable Regions / Countries

  • Japan
  • Southeast Asia
  • ASEAN countries

    Indonesia,Cambodia,Singapore,Thailand,Philippines,Brunei Darussalam,Viet Nam,Malaysia,Myanmar,Lao PDR


We have its track records in Japan and Vietnam for the capacity range approximately 10,000m3/d~300,000m3/d.

Related SDGs Goals

  • 3. Good Health and Well-being
  • 6. Clean Water and Sanitation

Open Siphon Filter (OSF)