


Rain Harvesting First Flush Plus Downpipe 4" WDDP111
The WDDP111 First Flush Plus is a 4" downpipe diverter that improves rainwater quality by preventing the initial dirty runoff from entering your tank. Itβs designed for high debris loads and comes with a patented slow release valve to automatically empty after rainfall.
Product Details
π Key Specifications
Part Number: WDDP111
Inlet Size: 4"
Material: UV-stabilized PVC
Drain Valve: Slow release, automatic reset
Mounting: Vertical downpipe installation
Dimensions: 9.8" L Γ 5.9" W Γ 13.8" H
Weight: 1.5 lbs
π οΈ Standard Inclusions
First Flush chamber
Ball seat and sealing ball
Slow release drain valve
Wall brackets and hardware
πΏ Applications
Suitable for:
Residential rainwater harvesting
Gutter-connected tanks
Pre-filtration for cisterns
High-debris catchment areas
π Certifications & Compliance
Complies with rainwater harvesting best practices
BPA-free and lead-free materials
Manufactured by Rain Harvesting Pty Ltd
π Shipping & Handling Notes
Shipping Dimensions: 12" L Γ 8" W Γ 10" H
Shipping Weight: 2 lbs
Packaging: Boxed with foam support
Delivery: Ships via standard ground