First Flush Delta In-Ground | WDIG10

First Flush Delta In-Ground Diverter: Maximize Rainwater Quality with Smart Contaminant Removal

Product Overview

The First Flush Delta In-Ground Diverter is an essential component of any rainwater harvesting system, designed to improve water quality by removing contaminants from the first flush of rainfall. This innovative system diverts the initial runoff, which often carries dirt, debris, and organic matter, preventing them from entering your storage tanks. With an underground installation, it remains discreet while optimizing the efficiency of your rainwater collection system.

How It Works

When it rains, the first runoff from rooftops collects dust, leaves, bird droppings, and pollutants. Instead of allowing this contaminated water into your rainwater storage tank, the First Flush Delta Diverter captures and temporarily holds this initial flow. Once full, the diverter automatically releases the collected water through a slow-drain valve, resetting itself for the next rain event. This process ensures that only cleaner rainwater flows into your tank, improving water quality for irrigation, household use, and industrial applications.

Key Benefits

✅ Improves Water Quality – Prevents contaminants from entering your rainwater storage system, reducing sediment buildup.
✅ Automatic Reset Function – No manual maintenance required; slow-release valve drains first flush water automatically.
✅ Prevents Anaerobic Fermentation – Reduces odor and improves stored water freshness by draining stagnant water in wet systems.
✅ High-Capacity Design – Uses 100mm (4-inch) pipes, making it easy to scale for large rainwater catchment areas.
✅ Reduces Filter Clogging – Protects pumps, filters, and irrigation systems from excessive sediment and debris.
✅ Underground Installation – Space-saving design keeps landscape aesthetics intact, making it ideal for residential and commercial rainwater harvesting.
✅ Durable Construction – Built from high-quality materials for long-lasting performance in outdoor conditions.

Common Applications

The First Flush Delta In-Ground Diverter is ideal for a variety of rainwater harvesting setups, including:

✔ Residential Rainwater Harvesting – Improve the quality of collected rainwater for gardening, outdoor washing, and household use.
✔ Commercial & Industrial Sites – Ensure cleaner water supply for cooling systems, manufacturing processes, and landscaping.
✔ Agricultural Irrigation – Reduce sediment and organic buildup in water used for crops and livestock.
✔ Municipal & Community Projects – Enhance stormwater management by filtering urban runoff before storage.

Installation & Setup

The First Flush Delta In-Ground Diverter is designed for easy installation using readily available 100mm (4-inch) pipes.

Installation Steps:
1️⃣ Select a Suitable Location – Install underground, near the downpipe, and connect to your rainwater collection system.
2️⃣ Attach the Diverter to a 100mm Pipe – Customize the length based on the required diversion capacity.
3️⃣ Secure the Slow-Release Valve – Ensures automatic draining of first-flush water.
4️⃣ Connect to Storage Tank – Once the first flush is diverted, cleaner rainwater flows into your tank.

💡 Tip: Position the diverter at a low point in your system to allow gravity-assisted drainage.