float switch
[/floʊt swɪtʃ/]
nounpl: float switches
chave de boia
1. An electrical switch that automatically opens or closes a circuit based on the rise or fall of liquid level in a tank or container, using a buoyant float mechanism
The float switch in the sump pump activates automatically when water reaches a certain level.
A chave de boia na bomba de drenagem ativa automaticamente quando a água atinge um nível específico.
2. A safety device commonly used in water tanks, aquariums, or industrial applications to prevent overflow or maintain liquid levels
The toilet's float switch ensures the tank refills to the proper level.
A chave de boia do banheiro garante que o reservatório se encha ao nível correto.
Float switches are widely used in Brazil in both industrial and residential plumbing systems, particularly in water storage tanks which are common due to inconsistent water supply in some regions. In the USA, they are most familiar in toilet cisterns and sump pumps. The term 'chave de boia' is well-established in Portuguese-speaking technical communities.
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