Rainwater Harvesting Filter - Intewa Purain Jump Filter

Description

The PURAIN rainwater filter, also known as the hydraulic jump filter, is an innovation for roof areas ranging from 300 to over 300 ft².
The hydraulic jump technology cleans itself automatically. The design model for PURAIN rainwater filters is provided by nature: in almost every stream, you can see how the hydraulic jump functions. The water flows over the stones, smooth and rounded by the action of the water. At the bottom of the drop, the flow changes suddenly and creates turbulence, which is known as a hydraulic jump. This resulting increase in water power transports any impurities over obstacles and away downstream.
Advantages
Minimal height offset - lowest invert of any rainwater prefilter
Self-cleaning due to the hydraulic jump effect
Minimal maintenance intervals
Debris is loosened by immersing the sieve
Integrated skimmer
Minimal blocking due to the trapezoidal gap sieve design
Optional cleaning back-wash nozzle, which sprays from under and through the sieve
Minimal blocking due to distribution over the total sieve surface
Immediate filtering = no start-up losses
The durable stainless steel screen
The high-quality, durable stainless steel sieve, with a gap width of 0.8 mm, reliably filters debris from the rainwater. Its trapezoidal shape and diagonally set profile prevents debris from settling and clogging it. The robust sieve is durable and must never be replaced.
The integrated overflow skimmer
The water surface in the tank is cleaned by an overflow skimmer integrated into the PURAIN rainwater filter PR-100 and PR-150-200. Floating debris, such as flower pollen, are skimmed away from the water surface through the side pockets. From here, the debris is directly channeled out to overflow and wastewater connection.  The overflow skimmer adds a further cleaning process to the tank water.