How Do Gas Pumps Automatically Stop & Why Pumps Shut Off Prematurely?

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How do gas pumps work? Do gas nozzles use a touch or light sensor? How do gas pumps know when to shut off? Well, gas pumps actually use the venturi effect to create a vacuum inside the gas pump reducing the pressure inside. When the pressure inside the gas nozzle drops below a threshold, gas stops flowing. This video describes what the venturi effect is and how it works and a couple of reasons why gas pumps may keep shutting off.

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Music: Ansia Orchestra – Mercury

Disclaimer:
This video is not a solicitation or personal financial advice. All investing involves risk. Please do your own research.

[samueljohnston]

Thank you so much, I’ve been unhealthily stressed about this issue every time I go to a gas pump, now I understand much better

[manghariz]

Damn Its quite a time
A good video to start off the decade

[TheBrewjo]

You lost it a little at the end. Fuel tanks aren't meant to be filled to the last cubic cm.

The tank needs some space to cope with the fact it's holding a liquid that wants to boil at room temperatures, filtration systems built into the tank aren't designed to be soaking in liquid fuel and the need to deform safely in a collision event without bursting.

[josephsiu]

nice video! may i know where is the next video explaining why not to top up the gas ?

[ThatMontmorency]

Explanations like this are useless. People don't want to hear that bla-bla-bla about "venturi effect" in general. (If you are here, you know about it already.) People want to know how an extremely _small_ force, produced by "venturi effect, translates into an extremely _large_ force ostensibly needed to disengage the latching lever and the main valve. This is the clever part. This is the primary "how" in "how it works". And this video does not make an effort to cover the matter.

[TheSocialGamer]

Where's your beautiful face. 😅👌 It doesn't seem the same... Happy new year!