---
product_id: 172595471
title: "First Flush with Catch-All Tee - First Flush Diverter Kit, Suits 4\" Round Pipes"
brand: "rain harvesting"
price: "€ 219.99"
currency: EUR
in_stock: true
reviews_count: 8
category: "Rain Harvesting"
url: https://www.desertcart.be/products/172595471-first-flush-with-catch-all-tee-first-flush-diverter-kit
store_origin: BE
region: Belgium
---

# Slow-release auto drain valve Catch-All Tee prevents water skipping Easy install, just add 4" pipe First Flush with Catch-All Tee - First Flush Diverter Kit, Suits 4" Round Pipes

**Brand:** rain harvesting
**Price:** € 219.99
**Availability:** ✅ In Stock

## Summary

> 💧 Elevate your rainwater game—capture only the best, effortlessly!

## Quick Answers

- **What is this?** First Flush with Catch-All Tee - First Flush Diverter Kit, Suits 4" Round Pipes by rain harvesting
- **How much does it cost?** € 219.99 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.be](https://www.desertcart.be/products/172595471-first-flush-with-catch-all-tee-first-flush-diverter-kit)

## 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

- • **Plug & Play Setup:** Comes complete—just add your 4" pipe and start harvesting
- • **Ready When It Rains:** Slow-release valve automatically resets the diverter for every storm
- • **Maintenance-Free Flow:** Auto-draining valve with funnel design minimizes clog risks and upkeep
- • **Purest Rainwater Capture:** Catch-All Tee ensures only the cleanest water reaches your tank
- • **Sustainable Water Quality:** Protects your system from contaminants for healthier, eco-friendly use

## Overview

The Rain Harvesting First Flush with Catch-All Tee is a smart diverter kit designed for 4" round pipes that automatically diverts and drains initial runoff, ensuring only the highest quality rainwater enters your storage tank. Featuring a unique Catch-All Tee to prevent water skipping and a slow-release valve with a clog-resistant funnel design, it offers low maintenance and easy installation—just add your pipe and start harvesting cleaner, contaminant-free rainwater.

## Description

Discover the next generation of rainwater collection with the Rain Harvesting First Flush with Catch-All Tee! The Catch-All Tee prevents water skipping across the tee until the first flush of water is complete so you only capture the best quality water. The funnel design of the release valve helps water to drain at the rate it's supposed to, and reduces the risk of the diverter becoming clogged. The diverter has a slow-release valve that drains the chamber as it operates, meaning it will always be ready for the next rainfall without your intervention. Boasting an efficient design and forward-thinking customization capabilities, 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.

Review: Easy to install, works well. - Awesome! It works well in my rain water catching system.
Review: Very Necessary for Rain Harvesting - Installed on a customer's rain harvesting system... works great!

## Features

- FIRST FLUSH: Protect the integrity of your rainwater by diverting initial runoff through the first flush diverter, equipped with the Catch-All Tee to ensure only the highest quality water is captured.
- CATCH-ALL TEE: This first flush diverter has a Catch-All Tee that prevents water skipping across the tee until the flush is complete, allowing only the highest quality water to flow through to your tank.
- AUTO DRAINING: This first flush diverter features a slow release valve which will automatically drain the chamber while in use, keeping it ready for the next rainfall.
- LOW MAINTENANCE: The release valve includes a unique funnel design, ensuring that water can drain smoothly, reducing the risk of clogging.
- JUST ADD PIPE: The First Flush with Catch All Tee includes everything you need to install - just add 4" pipe for the chamber.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Best Sellers Rank | #174,008 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #153 in Rain Barrels |
| Brand | Rain Harvesting |
| Color | Transparent |
| Customer Reviews | 4.1 out of 5 stars 69 Reviews |
| Global Trade Identification Number | 09317118999203 |
| Item Weight | 1.59 Kilograms |
| Material | Plastic |
| Shape | Cylindrical |

## Product Details

- **Brand:** Rain Harvesting
- **Color:** Transparent
- **Item Weight:** 1.59 Kilograms
- **Material:** Plastic
- **Shape:** Cylindrical

## Images

![First Flush with Catch-All Tee - First Flush Diverter Kit, Suits 4" Round Pipes - Image 1](https://m.media-amazon.com/images/I/51x4QHrXi8L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Easy to install, works well.
*by S***P on July 9, 2025*

Awesome! It works well in my rain water catching system.

### ⭐⭐⭐⭐⭐ Very Necessary for Rain Harvesting
*by S***S on July 15, 2025*

Installed on a customer's rain harvesting system... works great!

### ⭐⭐⭐⭐ Solid system but missing parts
*by B***N on January 13, 2024*

I received this item very quickly however it is missing one somewhat vital part. When I unboxed the item and started accounting for all the parts I found that the flow control valves were not in the box and I was planning on installing this the next day. Fortunately this is a piece I think I can make in my garage.

## Frequently Bought Together

- Rain Harvesting First Flush Plus Downpipe 4" WDDP111
- Leaf Eater Advanced Rain Harvesting RHAD100 Both 3" and 4" Compatible
- IBC Tote Lid Cap with Filter IBC Ton Barrel Caps Water Tank Lids with Pipe

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.be/products/172595471-first-flush-with-catch-all-tee-first-flush-diverter-kit](https://www.desertcart.be/products/172595471-first-flush-with-catch-all-tee-first-flush-diverter-kit)

---

*Product available on Desertcart Belgium*
*Store origin: BE*
*Last updated: 2026-04-26*