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.
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 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 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.
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