Can I use Blue Mountain Co vent cowls on my toilet or portaloo?
For detailed installation instructions, visit the Support page for your chosen product.
Vent cowls are optional for rainwater tanks with and without Maelstrom filters. However, the benefit of a vent cowl is that it will ensure the unrestricted flow of fresh air within your tank.
Both standard and weatherproof vent cowls allow fresh air to circulate within your rainwater tank. Weatherproof vent cowls incorporate a cap that shields the stainless steel screen from light (UV) and the weather. They can be used to provide a light (UV) and weather-proof vent on the top surface of your rainwater tank.
Fine particles can accumulate on your tank screen’s mosquito-proof mesh. This may block the water flow. To prevent this problem, regularly maintain your tank screen or replace it with a Maelstrom filter.
Your tank outlet may be blocked by a blocked Mozzie Stoppa or another obstruction. Alternately, the bottom of your tank overflow may sit above the base of your tank inlet screen and/or tank inlet.
Check your overflow outlet for the presence of a Mozzie Stoppa or other obstruction. If a Mozzie Stoppa is installed, remove and inspect it and clean if necessary before reinstalling it at the outlet or replacing with a Mozzie Stoppa Easy-Clean. Remove any other obstructions from your tank overflow outlet.
If a blocked Mozzie Stoppa or other obstruction is not the cause of your inlet overflow problem or if your inlet overflow problem persists, check to ensure that you have an appropriate height tank overflow for your tank. The bottom of your overflow should sit below the level of your tank inlet screen. If you have an overflow that sits above the base of your tank inlet, you will need to replace it with a lower tank overflow.
For detailed maintenance instructions, visit the Support page for your chosen product.
It is common to have two 90mm (3″) pipes feeding a single tank screen. If additional pipes are plumbed, it is important to consider the capacity of your tank overflow outlets. Your outlets should balance your inlet pipe volume so that the combined cross-sectional area of the inlet pipes does not exceed the cross-sectional area of the outlet. You may need to install an additional tank overflow outlet or enlarge your existing one to accommodate the volume of water from additional inlet pipes.