PURAIN Pre-Filters

If you want to ensure the maximum rainwater capture in a self-cleaning prefilter, this is the filter for you.  With sizes from 4″ inlets for residential scale projects to 16″ inlets for commercial scale capture for up to 100,000 square feet of rooftop, Intewa’s PURAIN has you covered.  You will also notice that our pricing is very competitive with all other self-cleaning filters on the US market today.  For more details on these superior products, click here for the Intewa USA website.


DN100 Thumb

4″ Residential


DN150 to DN400 Thumb

6″ to 16″ In Tank or External


HD Thumb

6″ to 16″ Below Ground