an in-depth look at normally open solenoid valves： applications, features, and benefits
Release time:2025-09-21 05:07:49
A Normally Open Solenoid Valve (NOSV) is an electromechanical device used for controlling the flow of liquids, gases, or steam within a pipeline or system. As the name suggests, these valves are normally open, allowing fluid to flow freely when no electrical current is supplied to the solenoid. However, once the solenoid is energized, the valve closes, stopping the flow. This functionality makes NOSVs incredibly valuable in a range of industrial, commercial, and residential applications.
What is a Normally Open Solenoid Valve?
In its most basic form, a Normally Open Solenoid Valve is a two-port valve that uses an electromagnetic solenoid to control its operation. Unlike Normally Closed (NC) solenoid valves, which are closed by default, NOSVs are open when no current is applied. The magnetic field created by the energized solenoid pulls or pushes a plunger or armature, closing the valve and halting the fluid flow. When the power is turned off, the spring-loaded valve reopens, and the flow resumes.
Key Features of Normally Open Solenoid Valves
Default Open State： The most distinguishing feature of a NOSV is its default "open" state. This makes them ideal for situations where it is necessary for the fluid to flow until a specific event triggers the valve to close.
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