INTEWA Ingenieur-Gesellschaft für Energie- und Wassertechnik mbH Verwaltung: Jülicher Straße 336 Lager: Jülicher Straße 342 D-52070 Aachen Best water quality 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. Telefon: 0049-(0)241-96 605-0 Telefax: 0049-(0)241-96 605-10 E-Mail: [email protected] Internet: www.intewa.de

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. Accessories Self-cleans with 98 % efficiency Low rainfalls Low rainfall events account for over 97 % of total annual rainfall. Therefore, it is particularly important that the filter be designed to collect this light rainfall. While many filters are not designed to collect light falls, the rainwater...

Easy to assemble, install and maintain The PURAIN Rainwater filter has a standardized DN pipe collar or spigot end ports for easy installation in the tank. (Note the height offset). This filter requires extremely low maintenance in comparison to other self-cleaning rainwater filters due to the self-cleaning by means of hydraulic jump design as well as the sturdy construction of the wedge wire sieve. The PR100 sieve should be checked about twice a year, to Cleaning with high pressure ensure that it is not heavily clogged. Should dirt or leaves be cleaner found in the tray they need not be removed...

Tank Installation instructions The filter must be installed with a slope of 2 – 5 %. At least 100 cm of pipe should be inserted on the inflow side of the filter – this will help align the sieve with the centre of the tank to facilitate clear viewing and cleaning.. For proper skimming with WSP-100, the filter must be installed without lateral tilt (filter sides must be level). A separate tank overflow is not to be installed. Accessibility to the filter is important for cleaning and maintenance of the sieve and the non-return valve. An intake settler (calming pot) on the floor of the tank, below...

PURAIN Rainwater filter PR-100 in plastic tank for single family dwelling PURAIN Rainwater filter PR-100 in concrete tank for single family dwelling

PURAIN Rainwater filter PR-150 in concrete tank for commercial and industrial buildings PURAIN Rainwater filter PR-400 in situ concrete commercial and industrial buildings

PURAIN Rainwater filter PR-300 in glass fibre reinforced plastic tank for commercial and industrial buildings Technical data L x B x H [mm]: D1 Intake: D2 Drain outlet DN100/Ø110 for (SP*) cistern: D3 Wastewater DN100/Ø110 outlet: (SP*) H1 Intake: 164 mm H2 Outlet for -Cistern: H3 114 mm Wastewateroutlet: ∆h Vertical offset between intake 50 mm and waste water drainage: a Length spigot -end: b Packing collar: -Width of wedge 0,8 mm wire filter: Efficiency: 98% 98% PP, NBR, PP, EPDM, Material: Stainless Stainless steel steel Weight: 2,4 kg 14 kg *LP=lip-seal, *SP=spigot end, M*=pipe collar PP,...

Packing dimensions PURAIN Transport volume: Carton packing (HxWxD): Carton weight: Volume per pcs.: max. pcs./EU palette: Dimension max. pcs. (HxWxD): Weight EU palette:

Area of application and sizing Sizing instructions As a general rule, the PURAIN rainwater filter is selected based on the diameter of the rainwater collecting pipe e.g. 100mm = PR100. If the diameter of the planned collecting pipe is not known, then you can refer to the following table. It gives an overview of the dimensions of these rain water connection pipes, as per DIN 1986, with measured rainfall yield indicator of r = 300 l/s ha and a slope of 1.5%. The discharge coefficient indicates by what factor the amount of rain discharged may be reduced, due to the type of roof used. Discharge coefficient...