--- product_id: 312592733 title: "Rain Harvesting Downspout First Flush Diverter Kit, 3\"" brand: "rain harvesting" price: "FREE" currency: AED in_stock: false url: https://www.desertcart.ae/products/312592733-rain-harvesting-downspout-first-flush-diverter-kit-3 store_origin: AE region: United Arab Emirates --- # slow-release valve for auto drainage 3" pipe compatible NSF 61 certified contaminant barrier Rain Harvesting Downspout First Flush Diverter Kit, 3" **Brand:** rain harvesting **Price:** FREE **Availability:** ❌ Out of Stock ## Summary > πŸ’§ Capture the cleanest rainβ€”because your water deserves a first-class flush! ## Quick Answers - **What is this?** Rain Harvesting Downspout First Flush Diverter Kit, 3" by rain harvesting - **How much does it cost?** FREE with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.ae](https://www.desertcart.ae/products/312592733-rain-harvesting-downspout-first-flush-diverter-kit-3) ## Best For - rain harvesting enthusiasts ## Why This Product - Trusted rain harvesting brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Durable PVC Build:** Robust, weather-resistant material ensures long-lasting performance - β€’ **Certified Clean Water:** Meets National Sanitation Foundation 61 standards for safe rainwater harvesting - β€’ **Effortless Water Purity:** Automatically diverts first flush contaminants before water hits your tank - β€’ **Seamless 3" Integration:** Designed to fit standard 3-inch downspouts for easy installation - β€’ **Smart Slow-Release Valve:** Drains chamber gradually, always ready for the next rain event ## Overview The Rain Harvesting Downspout First Flush Diverter Kit (3") is a PVC cylindrical system that automatically diverts and drains the initial contaminated rainwater from your downspout before it reaches your storage tank. Featuring a slow-release valve and NSF 61 certification, it ensures high-quality rainwater collection by preventing organic and inorganic debris from entering your tank. Compatible with standard 3" pipes, this kit offers an easy installation solution for cleaner, safer rainwater harvesting. ## Description Keep contaminants out of your rainwater supply with the Rain Harvesting First Flush Downspout. Equipped with a slow-release valve, this system automatically drains the chamber over time, keeping it ready for the next rainfall. The First Flush Basic comes with everything you need for installation, requiring only the addition of a 3" pipe for the chamber. Boasting an efficient design, this first flush will prevent both organic and inorganic contaminants getting into your water tank, and ensure a high standard of quality in the final collection tank. ## Features - Kit does NOT include the middle shaft - Divert the first flush of rain water before it goes to your tank - International products have separate terms, are sold from abroad and may differ from local products, including fit, age ratings, and language of product, labeling or instructions. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B001OWG6BU | | Best Sellers Rank | #189,542 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #59 in Roofing Gutters | | Brand Name | Rain Harvesting | | Color | White | | Customer Reviews | 4.4 4.4 out of 5 stars (250) | | Item Dimensions L x W x H | 10.2L x 15.2W x 20.3H centimeters | | Manufacturer | Rainharvesting | | Manufacturer Part Number | WDDS99 | | Material Type | Polyvinyl Chloride (PVC) | | Model Number | WDDS99 | | Number of Items | 1 | | Shape | Cylindrical | | Specification Met | National Sanitation Foundation 61 | | Unit Count | 1 Count | ## Product Details - **Brand:** Rain Harvesting - **Colour:** White - **Material:** Polyvinyl Chloride (PVC) - **Product dimensions:** 10.2L x 15.2W x 20.3H centimeters - **Specification met:** National Sanitation Foundation 61 ## Images ![Rain Harvesting Downspout First Flush Diverter Kit, 3" - Image 1](https://m.media-amazon.com/images/I/41g8s76RJuL.jpg) ## Questions & Answers **Q: How does this system work with standard 2x3 aluminum downspouts? I currently have Oatey diverter installed but wanted to add a first flush system** A: It will certainly work but you need other parts...like this...http://www.amazon.com/InvisaFlow-4400-Grate-Downspout-Filter/dp/B0061Q5DW2/ref=pd_sim_lg_8?ie=UTF8&refRID=12SVWE9CH475G0A0P16W You definitely want a filter above the unit. Here is another one http://www.amazon.com/Rain-Harvesting-Pty-Ltd-Advanced/dp/B004VMG05C/ref=sr_1_4?ie=UTF8&qid=1430844792&sr=8-4&keywords=First+Flush **Q: Can the ball get lodged in the tube by debris?** A: If debris is large it is possible. The 3" first flush is a bit tighter than the 4". Do know this, smaller debris will clog the screen at the bottom before the ball will get lodged, this will make prevent/slow the initial bad water from draining properly. Also consider the amount of water you need to flush based on roof surface area flowing to the flush. Reduce debris that could clog the system with gutter guards not expensive and just put them on the gutters feeding the capture system. This will also help with the routine maintenance, you need to clean it out the sediment/small debris to keep it working at it's best. If you were wondering why you see fine screens offered with the system. Fine screen keeps small debris out of the drain screen allowing better draining and longer intervals between cleaning. Picking little twigs, pine needles and stems of leaves out of the drain screen supplied with the system is no fun. The fine mesh over this is a plus in so many ways. Hope this helps and good luck. **Q: Do you have any drawings or illustrations available on how this is installed and how it works?** A: Yes, we do, but you will need to email us through Amazon support so that we can email you the attachments that you need. As there is no way to provide an attachment here. **Q: Where can I buy extra filter to fit in 3inch pvc pipe?** A: You would need to reach out the manufacturer for help with this, they are good at taking care of these requests, we do not carry extra parts. ## Frequently Bought Together - Downspout First Flush Diverter Kit, 3" - Leaf Eater Advanced Rain Harvesting RHAD100 Both 3" and 4" Compatible - Rain Harvesting Tank Gauge, Tank-Top Water Level Monitoring Device for Rain Water Catching Systems --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.ae/products/312592733-rain-harvesting-downspout-first-flush-diverter-kit-3](https://www.desertcart.ae/products/312592733-rain-harvesting-downspout-first-flush-diverter-kit-3) --- *Product available on Desertcart United Arab Emirates* *Store origin: AE* *Last updated: 2026-08-29*