JoJo Tank First Flush Rainwater Diverter - Contaminant Flusher, Water Quality Enhancer, Automatic Sealing System

JoJo Tank First Flush Rainwater Diverter - Contaminant Flusher, Water Quality Enhancer, Automatic Sealing System

R 559.00

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13 Sep 2026
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Description

Clean Start for Your Tank: The JoJo First Flush Diverter

 

Protect the quality of your stored rainwater and the longevity of your pump with the essential JoJo First Flush Rainwater Diverter. During the first few minutes of rain, the roof and gutters are flushed of contaminants like dust, bird droppings, leaves, and sediments. This diverter intercepts and collects this initial, highly polluted "first flush" of water into a separate chamber.

Once the chamber is full, a clever floating ball mechanism rises to seal off the chamber, automatically diverting the subsequent, cleaner flow of water to your tank. This process drastically improves the water quality inside your tank. The kit includes a slow release valve in the base cap, which ensures the chamber empties itself gradually after the rain stops, resetting the system for the next rainfall with zero manual effort.

   Key Benefits
  • Improved Water Quality: Flushes away the initial, most contaminated roof runoff, significantly improving the quality of stored water.

  • Automatic System: The ball mechanism seals the chamber when full, and the slow-release valve empties and resets it automatically.

  • Protects Pumps: Reduces sediment and debris entering the tank, protecting pumps and internal appliances from damage.

  • Versatile Installation: Can be installed both horizontally and vertically.

  • Customisable Volume: Allows you to add the appropriate length of 110 mm pipe to tailor the volume of water you wish to divert.

   Key Technical Information
  • Brand: JoJo 

  • Product Name: First Flush Rainwater Diverter

  • Primary Function: Captures and diverts the initial contaminated flow of water.

  • Mechanism: Floating ball seal with a slow-release control valve.

  • Diverter Pipe Size: Requires the addition of 110 mm plumbing pipe (sold separately) for the diverter chamber.

  • Maintenance: Minimal maintenance required.

  Technical Specifications 
  • Brand: JoJo Tanks

  • EAN: 6009701825787

  • Product Type: Rainwater Harvesting Diverter Kit

  • Diverter Pipe Diameter (Required): 110 mm (4 inches)

  • Operation: Automatic (Ball Seal)

  • Installation: Horizontal or Vertical

  • Weight (Approx.): 1 kg

  Ideal For
  • Improving Drinking Water Quality: Essential if harvested water will be filtered for potable use.

  • Protecting Water Appliances: Reducing fine sediment that can damage internal pump components and filters.

  • All Rainwater Systems: Recommended for use with every downpipe feeding a water storage tank.

   What's in the Box
  • 1 x T-Junction/Main Body (110 mm for downpipe/tank connection).

  • 1 x Floating Ball (to seal the chamber).

  • 1 x Flow Control Cap (base cap with slow release valve).

  • 1 x Sealing Valve/Cone (internal seating part).

  • (Note: The 110 mm PVC pipe for the diverter chamber must be purchased separately).

  Top 3 Frequently Asked Questions (FAQs)
  1. Do I need to install a Rainhead with this Diverter?

    • It is highly advised. The Rainhead (or leaf eater) removes large leaves and debris before the water reaches the First Flush Diverter, which prevents blockages and allows the diverter to focus only on fine sediments and contaminants.

  2. What length of pipe should I use for the diverter chamber?

    • The pipe length determines the volume of water diverted. Longer is generally better for improved water quality, but the length should also allow for enough clearance for the base cap's drainage.

  3. How does the diverter empty and reset?

    • A small slow-release control valve in the base cap allows the collected contaminated water to gradually drain out over several hours or days, automatically resetting the chamber for the next rain event.

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