Air Gap Backflow Prevention
BACKFLOW PREVENTION FOR YOUR RAINWATER TANK OVERFLOW
The Air Gap prevents stormwater backflow from entering a rainwater tank,
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 0.955mm aperture
- Air Gap provides a visual inspection point on overflows
- Easy to install
- Easy to paint
- HB 230 Requirement
The Rain Harvesting Air Gap incorporates two 90mm Female sockets that glue directly to DN90mm pipe.
Install the Air Gap to a vertical section of pipe after the overflow of the tank.
To maximise performance, install the Air Gap a minimum of 300mm below the overflow outlet.
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 142mm section of pipe to allow fitment.