好的，我为你写了一篇原创英文文章，长度约800字，并包含你要求的标题格式：

标题: Understanding the Function and Applications of Normally Open Solenoid Valve A Normally Open (NO) Solenoid Valve is a crucial component in modern fluid control systems, widely used in industrial, commercial, and residential applications. Unlike its counterpart, the Normally Closed (NC) solenoid valve, the NO solenoid valve remains open when no electrical power is applied, allowing fluid to flow freely through the system. When the valve is energized by an electric current, it closes, stopping the flow of the fluid. This distinctive feature makes it an essential device in situations where uninterrupted fluid flow is required in the absence of power or control signals.