Posted 4th January 2019
Double skin, bunded oil tanks are the safest way to store heating oil. So to clarify, the secondary containment preventing spills and leaks affecting the environment. But the pipework is still at risk of leakage, what can be done?
A bottom outlet kit uses gravity to allow the oil to flow through the supply pipe to the appliance. That’s great until you have a leak or weep in the outlet valve or any of the pipework. Unfortunately, they can go undetected for years especially if underground. On an Oil Storage Tank with a top outlet, oil is drawn out of the top of the tank and along the pipe to the appliance, so there is no need to have a hole in the bottom of the tank.
By using an oil tank with a top outlet and an anti-siphon valve. When the boiler demands oil the anti-siphon valve will open and allow the oil to flow. In the event of a damaged or leaking pipe or joint—No oil will flow from the tank saving oil loss to the environment.
Top outlet tank fitting kits will only work with boilers that have pumps. AGAs and vaporising burners used in some range cookers would need an oil lift pump installing to work correctly, for instance. 95% of pressure jet boilers will work with a top outlet tank but we can advise you on that.
To operate efficiently, an oil de-aerator, such as a ‘Tiger Loop’ or ‘GOK’ will be required. As the oil supply will be under slight negative pressure, small bubbles of air can form in the pipework (similar to opening a bottle of fizzy drink). In short, the deaerator will allow this air to bleed away and the boiler to run efficiently. Letting you carry on with peace of mind!
If you would like more information on top outlet tanks for domestic heating oil. Please feel free to call on 01722 714514
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