Installation and user manual


PURAIN-HD Installation and user manual



In this filter comparison test, INTEWA requested the Research Center for Water Management and Environment (FWU) at the University of Siegen, to examine the INTEWA WSP 100 (now known as the PURAIN Filter), the 3P cartridge filter PF and the WISY fine swirl filter WFF-100 for their efficiency. Here you can read the informative findings of the report.

The possibility to save drinking water has enhanced strongly the last years.

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A rainwater filter cleaning itself by the principle of the hydraulic jump.

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The DRAINMAX tunnel infiltration system: The only plastic trench with flushable  ground.

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The optimized water pump station for rainwater and greywater utilization in every planned construction.

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