PURAIN Rainwater filter

Best water quality

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 Canadian market today.

The PURAIN Rainwater filter provides optimum water quality in your tank. The rainwater filter is designed to filter rainwater coming off roofing made from clay brick, shales, metal, glass or concrete stone.

Note: Green roofs or bitumen sealed cardboard roofs can lead to the water becoming discoloured. Samples analyzed by us confirm an excellent quality of water. The water is best suited for use in flushing toilets, in the washing machine and for garden irrigation as well as some other commercial applications.

Using soft rainwater saves on detergent costs, prevents the calcification of piping and appliances and is the most natural thing you can give your plants.

Best water quality

The break-proof stainless steel wedge wire filter

The high qual­ity, break-proof, stain­less steel wedge wire sieve, with a gap width of 0.8 mm, re­li­ably fil­ters the con­t­a­m­i­nants from the rain­wa­ter. Its trape­zoidal shape and di­ag­o­nally set pro­file pre­vents the dirt from set­tling and clog­ging it. The sturdy sieve is break-proof and is de­signed to last the life of the fil­ter.

The break-proof stainless steel wedge wire filter

The built-in overflow skimmer

The water sur­face in the tank is fur­ther cleaned by means of an over­flow skim­mer in­te­grated into the PU­RAIN Rain­wa­ter fil­ter PR-100. Small float­ing de­bris, such as flower pol­lens, are car­ried away from the water sur­face at every over­flow via the de­signed side pock­ets. From here, the de­bris is di­rectly chan­neled out to waste water drainage.  The ac­tion of the over­flow skim­mer adds a fur­ther clean­ing process to the tank water.

The built-in overflow skimmer

The built-in non-return valve and protection for small animals

The de­sign of PU­RAIN PR-100 fea­tures a non-re­turn valve of stan­dard size, as stip­u­lated by most reg­u­la­tions. This pre­vents the over­flow­ing dirty water from flow­ing back into the sys­tem and also stops small an­i­mals from en­ter­ing the tank.

The built-in non-return valve and protection for small animals

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