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Flow Switch

Flow Switch

A water flow switch or water flow switch in an automatic fire sprinkler system or less often a fire hydrant system is an electro-mechanical alarm initiating device that has been designed to detect the flow of water through a pipe.

A water flow switch is typically installed in the water supply (above an alarm valve) or in a branch of an automatic fire sprinkler system or fire hydrant system and is used to detect the flow of water indicating an alarm condition.


In preparing this definition, we have drawn from various sources including Legislation, Codes, Standards and industry information, research and knowledge.  Like the english language, these definitions may subtly change from time to time. As such these definitions are provided solely on the basis that users will be responsible for making their own assessment of the definition and and are advised to verify all relevant representations, statements and information.