The metering is done in the dispenser, not the nozzle. | Hacker News

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		userbinator on Oct 11, 2020 \| parent \| context \| favorite \| on: How does a gas pump know to shut itself off? (1981... The metering is done in the dispenser, not the nozzle.

RedShift1 on Oct 11, 2020 [–]

Yes, but can having the nozzle not 100% open influence the metering?

userbinator on Oct 12, 2020 | [–]

No, because that would become widely known and people would take advantage of it. I believe they use a https://en.wikipedia.org/wiki/Positive_displacement_meter

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