Clean Rainwater Starts with I-RAIN® First-Flush
Automated first-stage roof runoff isolation that diverts initial silt, dust, and debris before clean rainwater enters storage tanks or secondary filters.
Essential First-Stage Protection for Clean Rainwater Recycling
Roof catchments accumulate heavy atmospheric dust, silt, and bird droppings between rainfalls. The I-RAIN® Automatic First-Flush Diverter automatically captures and isolates this dirty initial roof wash before clean rainwater reaches your storage tanks.
✓ Preserves Stored Water Purity – Isolates bird droppings, heavy silt, and airborne particles.
✓ Extends System Lifespan – Prevents sediment buildup in pumps and storage infrastructure.
✓ Zero Power & Self-Draining – Operates automatically and resets after every rain event.
Select Your I-RAIN® First-Flush System
Engineered first-stage diversion solutions built for commercial, industrial, and residential projects.
FFPE650 Series First-Flush Device
✓ High Durable Composite Polyethylene Material
✓ Standard Table E Flange Connection for uPVC RWDP Pipe Size Connection
✓ Large Flushing Capacities Configuration Up to 750 Litres
✓ SS304 Stainless Steel Mounting for Horizontal Installation
✓ Custom Color Options Available (Subject to Minimum Order Quantity)
FFT Series First-Flush Device
✓ Durable SS304 Stainless Steel
✓ Large flushing capacities configuration
✓ Strong, seamless and leakproof construction
✓ High flushing volume
FFH / FFV Series First-Flush Device
✓ Durable unplasticized polyvinyl chloride (uPVC)
✓ ⌀110mm / ⌀160mm Inlet with Easy Maintenance Flush Valve
✓ Variable flushing capacity depending on catchment requirement
✓ Suitable for surface, hidden or underground installation
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