WFF100 WISY Vortex Rainwater Filter

Built for Efficient Collection

• Filters over 1 gallon of stormwater per second
• Covers up to 2,100 sq ft roof area per unit
• Full pipe cross-section maintained with no internal bottlenecks
• Multiple units can be combined for larger roofs

Self-Cleaning Vortex Technology

• Spinning water action sweeps debris off filter mesh automatically
• Leaves, moss, and sediment routed to stormwater system
• Oxygen mixed into filtered water for improved storage quality
• Built-in first flush diverts dirtiest initial runoff while filter saturates (up to 2 minutes)
• Meets ARCSA/ASPE/ANSI Standard 63 for Rainwater Catchment Systems

Durable Construction

• Stainless steel filter insert resists corrosion and debris adhesion
• Polypropylene housing withstands soil, moisture, and ground chemicals
• Vehicle rated to 30 metric tons over compacted subsoil or concrete slab
• Stainless steel filter insert and lifting handle included

Low Maintenance

• Inspection recommended only twice per year
• Filter insert is dishwasher-safe
• Can be pressure washed at 20″ nozzle distance
• Smooth mesh surface reduces buildup

Flexible Installation

• All three pipe connections rotate 360° independently
• Below-grade or indoor mounting options
• Optional wall brackets for indoor/shaft installation ((WH 0303) flat wall / (WH 0400) curved tank wall)
• Extension tube included; trims to height using built-in saw grooves
• Up to two extension tubes for deeper installations
• End ring allows flush finish with surrounding pavement

Filtration Options

• 280 micron mesh (standard) for fine filtration
• 440 micron mesh (WE 0301) for coarser applications
• Blind insert (BE 0301) available for tank maintenance bypass

Performance

• Maximum flow rate: 66 GPM
• Maximum connectable roof area: 2,100 sq ft
• Filter mesh options: 280 micron (fine) or 440 micron (coarse)
• Vehicle load rating: up to 30 metric tons (requires compacted subsoil or concrete slab)

Connections

• Rainwater inlet: 4″ with socket and gasket, 360° rotatable
• Drain/debris outlet: 4″, 360° rotatable
• Filtered water outlet to storage tank: 4″, 360° rotatable
• Minimum settling length before rainwater inlet: 19.6″
• Drain tube diameter must be equal to or larger than the inlet tube diameter

Elevation Requirements

• Rainwater inlet to drain connection (vertical distance): 10.6″
• Rainwater inlet to filtered water outlet (vertical distance): 8.3″

Dimensions (housing only, without extension tube)

• Housing diameter: 12.4″
• Overall height: 19″

Extension Tube

• Bridges filter housing to ground-level cover for easy access
• Adds 22″ of height, trimmable to fit installation depth using built-in saw grooves
• Up to two tubes can be stacked for deeper installations
• Secured with included stainless steel screws

Materials

• Filter insert: stainless steel
• Housing, cover, and extension tube: polypropylene
• Lifting handle: stainless steel (11.8″ standard length included; 24″ and 39″ lengths available)
• Connection hardware: stainless steel screws (included)

Operating Conditions

• Suitable for outdoor below-grade or indoor installation
• Not a sealed/closed system; must not remain flooded for extended periods
• Indoor installation requires a floor drain in the installation room
• Indoor max inflow must not exceed 66 GPM
• In loamy soil, provide drainage beneath the filter or seal housing joints externally before installation
• For installations too deep or under excessive load, a concrete shaft is required

Compatible Roof Surfaces

• Slate, clay tile, concrete tile, sheet metal, foil/membrane roofing
• Asphalt shingles: suitable for non-potable (flushing, laundry); generally not recommended for potable, testing untreated runoff is essential if pursuing
• Green roofs: not recommended (retention and discoloration concerns)
• Bitumen roofs: not recommended (possible discoloration from tar and carbon leaching)
• Asbestos-cement roofs: not compatible (must be renovated before connection)

Replacement Filter Inserts:

• 280 Micron Stainless Steel Filter Insert (WE 0305)
• 440 Micron Stainless Steel Filter Insert (WE 0306)

Replacement Parts: Call to Order

• Housing Cover Lid (WN 1002)
• Final Ring to support cover (ZW 1000)
• Lifting Handle 11.8″ standard (WA 0301)

Installation Accessories:

• Extension Tube, 20″ increments (WV 1010)
• Lifting Handle 24″ (WA 0302)
• Lifting Handle 39″ (WA 0303)
• Stainless Steel Wall-Mount Bracket for flat walls (WH 0303)
• Stainless Steel Wall-Mount Bracket for curved tank walls (WH 0400)

Optional Add-Ons:

• Blind Insert for tank maintenance bypass (BE 0305)
• Soak-Away Strainer for infiltration systems (VS 0304)

Product and Installation Guide

Take a look at how the WISY Vortex Filters maintain a high efficiency while eliminating most debris that would otherwise go to the tank.