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Published on 06 Jan 2014 | over 3 years ago

When you fill fuel in your car and when it reached the full level, there is a mechanism which opens a return-valve at the top of the pump station to allow excess petrol to flow back into the pump, but as the fuel has already passed through the meter you will have to pay for it and the fuel will return to the fuel bunk storage tanker.
Watch the animation to see how it happens.

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