A solenoid valve is an essential component in modern fluid control systems, used to control the flow of liquids or gases in a variety of industries. Among the many types of solenoid valves available, the Normally Closed (NC) Solenoid Valve is one of the most commonly used designs. Understanding how this valve works, its applications, and the advantages it offers can help engineers and technicians make informed decisions when choosing the right components for their systems. In this article, we will explore the functionality, applications, and benefits of a Normally Closed Solenoid Valve.
What is a Normally Closed Solenoid Valve? A Normally Closed Solenoid Valve is a type of valve that remains closed when not energized, and opens when an electric current is applied to the solenoid coil. The valve operates based on electromagnetic principles; the solenoid coil generates a magnetic field that either pulls or pushes a plunger or diaphragm, causing the valve to open or close. In its default state (when no electrical current is applied), the valve is closed, preventing the flow of fluid or gas. When the solenoid is energized, the valve opens, allowing fluid to pass through.
The term “normally closed” refers to the valve’s default state, meaning that the flow path is blocked until the valve is activated by an electric signal. This is in contrast to Normally Open (NO) solenoid valves, which are open when not energized and close when powered.
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