Air Gap Backflow Prevention

Tank Essentials

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Description Code
Air Gap
3″ TAAG99

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Backflow prevention for your rainwater tank/CISTERN overflow

The Air Gap prevents stormwater backflow from entering a rainwater tank/cistern, by creating a physical air break on the outlet of the tank overflow and before the stormwater drainage system.  The Air Gap also acts as a visual inspection point to detect trickle top-up system failure.

Features and Benefits

  • Two removable mosquito screens for easy cleaning and low maintenance
  • Each screen is made from mosquito proof stainless steel mesh with 1/32″ aperture
  • Air Gap provides a visual inspection point on overflows
  • Includes adaptors for secure connection to 3″ stormwater pipes
  • Easy to install
  • Easy to paint

Installation Instructions

The Rain Harvesting Air Gap incorporates two 3″ Female sockets (adaptors already fitted)  that glue directly to 3″ pipe.

Install the Air Gap to a vertical section of pipe after the overflow of the tank.

Install at shoulder height to provide convenient access for maintenance

Ensure the Air Gap is installed the right way up, NOTE instructions on product: ‘Install this side facing up’.

If installing the Air Gap to existing pipe work simply remove a 8″ section of pipe to allow fitment.