Vent cowls include an insect proof stainless steel screen of 0.955mm aperture and can be fitted to the top of rainwater tanks to help vent them properly . They are an ideal method for providing air circulation through tanks where rainwater is piped directly into the top or side of the tank, rather than passing through a tank screen.
50mm Vent Cowl (pictured on the right) fitted on top of a concrete tank to ensure air can enter the tank and allow the water to breathe
Vent cowls can be fitted to the top of rainwater tanks to help vent them properly
The vent cowls from Rain Harvesting are also designed to fit to the top of toilet vent pipes and REDUCE THE POSSIBILITY OF PAN SYPHONING where two toilets are connected to the one line. They feature an open space area of the screen is at least 1.5 times larger than the open area of the pipe which guarantees a full flow of air when the downstream toilet is flushed eliminating vacuum within the line. They fit 50 & 100mm PVC & Copper (with the use of a standard 3mm nitrile “O” ring).
50mm and 100mm Vent cowls
Compliance
The Vent Cowl complies with Australian Standards:
AS/NZS 4020:2005 Testing of product for use in contact with drinking water
