What is a Flow switch?

A flow switch is a device that detects the fluid flow in a pipe or duct and outputs a contact output. It means a switch that detects flow. A signal is sent when the flow rate is above or below a certain value. They are often used in combination with control devices such as pumps and valves. It is an important device from the viewpoint of pump failure prevention and equipment safety, and is used as an alarm and safety device when the fluid is interrupted.

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