Solenoid valve

A solenoid valve is an electromechanically operated valve used in heating systems, fuel pipelines, and industrial automation to regulate the flow of liquids or gases. It works by passing electric current through a coil of wire, which creates a magnetic field. The magnetic field attracts a plunger, which operates the valve mechanism, to open or close fluid passages.

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Source: Wikipedia · Image: Wikimedia Commons · CC BY-SA 3.0

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