Flap Valves

Make sure that your rainwater tank can handle high water flows and stays oxygenated.

Effectively secure your rainwater system by managing overflowing water and improving ventilation through our range of tank overflows, pipe screens and vent cowls.

All our overflows can also be paired with mosquito proof screens or flap valves, and some can be used to increase your tank’s rainwater storage capacity.

Mozzie Stoppa Pipe Screens

Effectively secure your rainwater system by managing overflowing water and improving ventilation through our range of tank overflows, pipe screens and vent cowls.

All our overflows can also be paired with mosquito proof screens or flap valves, and some can be used to increase your tank’s rainwater storage capacity.

Tank Overflow Kits

Effectively secure your rainwater system by managing overflowing water and improving ventilation through our range of tank overflows, pipe screens and vent cowls.

All our overflows can also be paired with mosquito proof screens or flap valves, and some can be used to increase your tank’s rainwater storage capacity.

Flap Valves

Effectively secure your rainwater system by managing overflowing water and improving ventilation through our range of tank overflows, pipe screens and vent cowls.

All our overflows can also be paired with mosquito proof screens or flap valves, and some can be used to increase your tank’s rainwater storage capacity.

Tank Overflows

Effectively secure your rainwater system by managing overflowing water and improving ventilation through our range of tank overflows, pipe screens and vent cowls.

All our overflows can also be paired with mosquito proof screens or flap valves, and some can be used to increase your tank’s rainwater storage capacity.

Vent Cowls

Effectively secure your rainwater system by managing overflowing water and improving ventilation through our range of tank overflows, pipe screens and vent cowls.

All our overflows can also be paired with mosquito proof screens or flap valves, and some can be used to increase your tank’s rainwater storage capacity.

Pipe Screens, Tank Overflows and Vent Cowl Accessories

Effectively secure your rainwater system by managing overflowing water and improving ventilation through our range of tank overflows, pipe screens and vent cowls.

All our overflows can also be paired with mosquito proof screens or flap valves, and some can be used to increase your tank’s rainwater storage capacity.

Air Gaps

Effectively secure your rainwater system by managing overflowing water and improving ventilation through our range of tank overflows, pipe screens and vent cowls.

All our overflows can also be paired with mosquito proof screens or flap valves, and some can be used to increase your tank’s rainwater storage capacity.

Looking for something else?

View the full product range from our home base in Australia.

Free Handbooks by Rain Harvesting

Rain Harvesting Handbook

A guide that will provide you with help and inspiration to start your rainwater harvesting journey today.

A sketch of mechanics about rain harvesting

Design Service

Improve your existing Rain Harvesting system or design a new one with the help of our experts and our free system design service.