How petrol pumps know when to turn themselves off

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Gas or petrol pump nozzles turn off automatically when your tank is full. The way it works is truly intelligent and makes use of the venturi effect.

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15 Comments:

  1. If I’ve set things up right, the title of this video should say “gas” for US people, and “petrol” for UK people! If you’re in one of those countries, can you confirm?

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  2. Ingenious design, really quote clever. No, can we get rid of gas stations all together.

  3. ialwaysprocrastinate

    Quality models made in this video

  4. Bipolar Mind Droppings

    Is this the same Venturi as in Venturi tunnels that the new F1 cars use to create downforce?

  5. Hey Steve! Interesting video! In most petrol pump handles there is a mechanism to ‘lock’ the pump on. Of course, in the UK they remove the clip required, but it loooked like your handle had one.

    I wondered if you could give a little explanation how how that clip works/gets freed, and stops the pump?

  6. I’ve wondered how these work most times I’ve used them. I’d figured out it was based on the inner tube allowing air in until it was blocked, but hadn’t figured out the detail. Much more clever and intricate than I imagined. I’ll be less annoyed next time I get one of those that keeps clicking off every few seconds!

  7. Seen a guy holding a pump sideways an spilling petrol everywhere! Hope this has answers

  8. Now the question has to be – what genius invented this, and did they come up with the whole design in one go, or has it be improved bit by bit?

  9. so simple yet so complex 🙂 Great vid, thanks!

  10. I could have sworn I’ve seen this used on something else fairly common. But for the life of me I can’t remember what.

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