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Our stores in Greater Auckland are now open under Level 2 restrictions. All other stores in New Zealand are open under Level 1 restrictions. All of our stores continue to have a comprehensive range of measures in place to keep team members and customers safe.

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  • Isolates the first flush of contaminant-laden water from your roof, by keeping organic and inorganic fine particles out of the rainwater you harvest
  • High Volume Chamber uses multiple 100mm pipes for simple installation and high volume diversion
  • Transparent, Rapid Release Exit Funnel allows for easy visual inspection and draws sediment into the exit flow for reduced buildup and blockages
  • Advanced Release Valve allows you to program how frequently the first flush chamber empties

The Delta Commercial is available to suit 150mm downpipes, allowing you to enjoy the easy install benefits of using 100mm pipes for the first flush chamber.

This first flush diverter kit excludes tee and reducer.

We will gladly assist with returns and exchanges of this product in accordance with our returns and exchanges policy

Returns policy