WISY Rainwater Harvesting Filters

Rainwater Filtration - separating solids from water

Over the past 30 years patented rainwater filters from WISY have been installed in thousands of applications throughout the world.

WISY VORTEX Fine Filters for horizontal pipes or WISY Filter Collectors for vertical downpipes.


WISY rainwater filters for mechanical filtration of water and water based liquids incorporate the following:

  • nearly self-cleaning due to vertical filter mesh
  • automatic onward transport of solids beyond the filter
  • stable and lasting design in polyethylene (PE) and stainless-steel
  • large inspection cover for easy maintenance
  • ideal for industrial and commercial facilities
  • high filter efficiency
  • low maintenance
  • no energy consumption; works with gravity


Complete Drainage Safety - DIN EN 12056 / EN 752, DIN 1989

WISY filter systems in vertical downpipes or connected to underground pipes do not obstruct the water flow, guaranteeing required drainage-safety at all times.
This is of significance during heavy precipitation events to allow the full cross-section of the pipes to be used.

At the same time, the drainage pipes and the filter systems have to be sized according to the water flow of the connected roof areas.
For orientation, WISY indicates approximate guidelines of the roof area which can be connected to the different filters available.

Maximum rainwater flow rate of WISY rainwater filters

Below flow rates of WISY filters apply for a maximum pipe slope of 1% and maximum pipe filling-level of 0.7 or 70%:
(DN100 = 4" / DN150 = 6" / DN300 = 12")

  • LineAR 100 Inline Filter (4") = 4,2 l/s
  • Filter Collector FS (4") = 4,2 l/s
  • Standpipe Filter Collector STFS (4") = 4,2 l/s
  • Vortex Fine Filter WFF 100 (4")= 4,2 l/s
  • Vortex fine filter WFF 150 (6") = 12,8 l/s
  • Vortex fine filter WFF 300 (12") = 80,6 l/s


WISY Filter Efficiency Diagram.pdf

Rainwater Filtration - separating solids from water Over the past 30 years patented rainwater filters from WISY have been installed in thousands of applications throughout the world.... read more »
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WISY Rainwater Harvesting Filters

Rainwater Filtration - separating solids from water

Over the past 30 years patented rainwater filters from WISY have been installed in thousands of applications throughout the world.

WISY VORTEX Fine Filters for horizontal pipes or WISY Filter Collectors for vertical downpipes.


WISY rainwater filters for mechanical filtration of water and water based liquids incorporate the following:

  • nearly self-cleaning due to vertical filter mesh
  • automatic onward transport of solids beyond the filter
  • stable and lasting design in polyethylene (PE) and stainless-steel
  • large inspection cover for easy maintenance
  • ideal for industrial and commercial facilities
  • high filter efficiency
  • low maintenance
  • no energy consumption; works with gravity


Complete Drainage Safety - DIN EN 12056 / EN 752, DIN 1989

WISY filter systems in vertical downpipes or connected to underground pipes do not obstruct the water flow, guaranteeing required drainage-safety at all times.
This is of significance during heavy precipitation events to allow the full cross-section of the pipes to be used.

At the same time, the drainage pipes and the filter systems have to be sized according to the water flow of the connected roof areas.
For orientation, WISY indicates approximate guidelines of the roof area which can be connected to the different filters available.

Maximum rainwater flow rate of WISY rainwater filters

Below flow rates of WISY filters apply for a maximum pipe slope of 1% and maximum pipe filling-level of 0.7 or 70%:
(DN100 = 4" / DN150 = 6" / DN300 = 12")

  • LineAR 100 Inline Filter (4") = 4,2 l/s
  • Filter Collector FS (4") = 4,2 l/s
  • Standpipe Filter Collector STFS (4") = 4,2 l/s
  • Vortex Fine Filter WFF 100 (4")= 4,2 l/s
  • Vortex fine filter WFF 150 (6") = 12,8 l/s
  • Vortex fine filter WFF 300 (12") = 80,6 l/s


WISY Filter Efficiency Diagram.pdf

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WISY WFF 100 Vortex Filter WISY Vortex Fine Filter - WFF 100 - w/o...
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WISY LineAr Filter 100 PE WISY LineAr 100 - PE Rainwater Filter
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WISY WFF 100 Vortex Filter
WISY Vortex Fine Filter - WFF 100 - w/o...
The WISY Vortex Fine Filter WFF 100 is a largely self-cleaning rainwater harvesting filter for roof areas of up to 200m². The WFF 100 has a high filter efficiency at 95% & is fully drainage-safe with a maximum flow-rate of 4.2 litres per...
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excl. VAT: €311.00 VAT: €71.53 *
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WISY WFF 100 Vortex Filter including 50cm extension
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WISY rainwater harvesting filter WFF 100 including extension tube for roof areas of 200 m². For underground installation directly into subsoil material. Sturdy construction, no additional filter housing chamber in concrete required.
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excl. VAT: €328.90 VAT: €75.65 *
WISY WFF 150 Vortex Filter
WISY Vortex Fine Filter - WFF 150 - w/o...
The WISY Vortex Fine Filter WFF 150 is a largely self-cleaning rainwater harvesting filter for roof areas of up to 500m². The WFF 150 has a high filter efficiency at 95% & is fully drainage-safe with a maximum flow-rate of 12.8 litres...
€502.09 *
excl. VAT: €408.20 VAT: €93.89 *
Hint!
WISY WFF 150 Vortex Filter including 50cm extension
WISY Vortex Fine Filter - WFF 150
WISY rainwater harvesting filter WFF 150 including extension tube for roof areas of 500 m². For underground installation directly into subsoil material. Sturdy construction, no additional filter housing chamber in concrete required.
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excl. VAT: €426.00 VAT: €97.98 *
Extension Riser for WISY WFF 100 & WFF 150
Extension Tube 50 cm (WFF100/150)
The 50cm extension tube is suitable for the WISY WFF 100 & WFF 150 Vortex Fine Filters. The extension riser can be shortened to suit site conditions. Up to 2x extensions can be combinded!
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excl. VAT: €46.30 VAT: €10.65 *
Wall-Mounting Bracket for WISY WFF 100 & WFF 150
Stainless Steel Wall-Bracket - WFF 100 & WFF 150
The stainless-steel wall mounting bracket for WISY WFF 100/150 vortex fine filters is required to mount the rainwater filters above ground to a vertical straight wall.
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WISY LineAr Filter 100 PE
WISY LineAr 100 - PE Rainwater Filter
The WISY LineAr 100 PE inline rainwater filter is located directly inside the rainwater tank. With a minimal height difference of only 52mm between the pipe inlet and outlet connection the filter is ideally suited for integration in...
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WISY LineAR 100 - V2A Rainwater Filter
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The WISY LineAr 100 - V2A inline rainwater filter in stainless-steel is located directly inside the rainwater tank. With a minimal height difference of only 52mm between the pipe inlet and outlet connection the filter is ideally suited...
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WISY Anti-Flooding Flap Valve
Anti-Flooding Flap Valve - DN 110
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WISY Downpipe Filter FS 68 VA with extension
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WISY Downpipe Filter FS 76 VA for size (DN) 76
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WISY Downpipe Filter FS 110 VA for size (DN) 100
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The WISY Filter Collector FS 110 VA is a rainwater filter in stainless-steel for vertical plastic downpipes in 100mm/4". The vertical stainless-steel filter mesh with 280 micron is largely sealf-cleaning for low filter maintenance.
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excl. VAT: €204.50 VAT: €47.04 *
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