Rain Harvesting Advanced First Flush ELECTRONIC Release Valve
The First Flush Advanced Release Valve is ahighly recommended upgrade for existing first flush systems. If you've experienced clogged outlets or frozen, crushed black or green float balls, this upgrade is perfect for you. Developed for the most recent models of First Flush systems, the Advanced Release Valve is an all-in-one automated control device, capable of adjusting the first flush diverter chamber's release rate from a few minutes to several weeks.
Features an upgraded primary filter for these existing first flush diverters:
- 3" First Flush
- 4" First Flush
- In-ground First Flush
- Post/Wall First Flush
Features and Benefits:
- Upgrade your existing First Flush to the latest technology
- Eliminate frozen float balls and clogged disks
- Have complete control over the first flush drip rate
- O-ring and swivel design allows for front orientation, every installation
- Minimal maintenance
- A unique sleek cover and cap provides a stylish, integrated look
- New clear end cap allows for sight verification of debris
Product Details
Key Features
Model: WDRV01
Application: Compatible with all Rain Harvesting first flush diverters (residential and commercial)
Drain Type: Slow, automatic release
Material: Durable, UV-resistant PVC and silicone components
Connection: Threaded for secure, watertight fit
Included Components:
Advanced release valve body
Removable cap
Pre-installed o-ring and seal
✅ Benefits
Precise Drainage – Allows for controlled slow release of first flush water, preventing overflow or underperformance
Automatic Reset – Resets the diverter after each rain event so the system is always ready
Upgrade Compatibility – Easily retrofits to existing diverters for improved performance
Tool-Free Maintenance – Removable cap enables quick inspection or cleaning when needed
Built to Last – Made with UV-stabilized materials for extended outdoor durability
Installation Overview
Unscrew and remove your current drain valve (if present)
Thread the WDRV01 Advanced Valve onto the diverter base
Ensure watertight seal using the pre-installed o-ring
Test flow and drainage speed after installation
Shipping & Handling
Package Dimensions: 6" L × 4" W × 4" H
Shipping Weight: Approximately 0.5 lbs
Packaging: Ships individually boxed with protective padding
Delivery Method: Standard ground service