Where does this come from, and can I check it?

A hollow float rises with the water and shuts the inlet at the set level. The figure is taken from Encyclopaedia Britannica, which is linked in full on this page. Every fact on Mondo Knows names its source rather than repeating an unsourced claim.

Is this really a everyday life fact?

Yes. It sits on the Everyday Life shelf, one of 2,600 sourced facts grouped into space, animals, the human body, history, science and more. Category pages collect every fact in the same field.

What else can I read about it?

The links under the fact point to a quiz, game, puzzle or calculator on the same subject, and the shelf below shows related facts. The wording here is original, and quoted phrases are marked as quotations.

Mondo Knows Facts

A float valve refills the cistern after every flush

A hollow float rises with the water and shuts the inlet at the set level Inside the tank a float rests on the water surface and is linked to an inlet valve, historically a brass ballcock. As the cistern empties the float falls and opens the valve; as it refills the float rises and closes it. An adjustment screw sets the stopping height, which fixes the flush volume. It sits in Mondo's everyday life collection, one of 200 facts that each trace back to the reference below.

Where this comes from

Encyclopaedia Britannica

Facts that can change over time are reviewed and updated. If something here looks wrong, Mondo would rather know than be confidently incorrect.

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Tags: plumbing, toilets, valves

A float valve refills the cistern after every flush: the short answers

Where does this come from, and can I check it?: A hollow float rises with the water and shuts the inlet at the set level. The figure is taken from Encyclopaedia Britannica, which is linked in full on this page. Every fact on Mondo Knows names its source rather than repeating an unsourced claim.
Is this really a everyday life fact?: Yes. It sits on the Everyday Life shelf, one of 2,600 sourced facts grouped into space, animals, the human body, history, science and more. Category pages collect every fact in the same field.
What else can I read about it?: The links under the fact point to a quiz, game, puzzle or calculator on the same subject, and the shelf below shows related facts. The wording here is original, and quoted phrases are marked as quotations.