RWH filters can be used where rainwater from the roof is channelled through a horizontal underground pipe. The unit filters and diverts rainwater to a storage tank or cistern. Leaves, moss and ot
her debris are washed through to drain or soakaway.

Rainwater enters the inlet connection in the side of the RWH unit. The inlet is designed to swirl the water around the surface of the stainless steel filter below. The rainwater is drawn through the vertical mesh walls of the fine filter by adhesion, then collected and fed through the outlet to the storage tank. Debris and particles too large for the filter are flushed through to the drain outlet by the action of water flowing down the surface of the filter. More than 95% of the rainwater entering the WFF is filtered and collected by this principle, .

Pitched roofs of slate, clay or concrete are the most suitable for collecting rainwater. Flat roofs can also be utilised but the volume of water collected is reduced. Planted roof areas or thatch are less suitable due to the low collection efficiency and discolouration of the collected water.

• Suitable for roof areas up to 500m²
• Connects to standard storm water pipes below ground
• Virtually all debris, moss, leaves, insects, etc. is washed through the uniquely constructed vertical filter by self-cleaning action
• Unique oxygen-enriching function
• No restriction or obstruction of water flow through the appliance (conforms to DIN1986)
• More than 95% efficient
• Minimum maintenance
• Tough polyethylene housing
• High quality stainless steel filter mesh
• 50cm extension tube can be trimmed to length to suit invert level
• Can also be wall-mounted
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