understanding normally open solenoid valve： function, applications, and advantages
Release time:2026-01-23 18:17:28
A Normally Open (NO) Solenoid Valve is a vital component in many fluid control systems, offering reliable performance in both industrial and commercial applications. Whether it's managing air, water, or other fluids, NO solenoid valves play an essential role in automating the flow of substances. This article will dive into the working principle, applications, and advantages of Normally Open Solenoid Valves, providing an understanding of why they are so commonly used.
What is a Normally Open Solenoid Valve?
A Normally Open Solenoid Valve is a type of electromagnetic valve that remains open when de-energized and closes when energized. In its default state, the valve allows the free flow of fluid through the system. The defining characteristic of a NO solenoid valve is that it does not require continuous power to remain open—only when electrical current is applied to the solenoid coil does the valve close, blocking the flow of fluid.
The valve consists of a coil that, when energized, creates a magnetic field. This magnetic field pulls a plunger or actuator inside the valve, which, in turn, either opens or closes the valve. When the power is turned off, a spring or other mechanical means forces the valve back to its default open state, allowing fluid to pass.
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