A solenoid valve is an essential component in many industrial and commercial applications, controlling the flow of liquids and gases. Among the various types of solenoid valves, the Normally Open (NO) solenoid valve stands out due to its unique function and widespread use. These valves are designed to remain open when de-energized, allowing fluid or gas to flow freely, and close when energized, making them critical in systems where the default state requires an open path. In this article, we will explore the functionality of Normally Open solenoid valves and highlight the contributions of Meishuo, a leading manufacturer in the industry, in advancing valve technology.

    A Normally Open solenoid valve (NO valve) operates based on the principle of electromagnetism. It consists of a coil, a plunger, and a spring. In its default state, the valve remains open, permitting the passage of fluids or gases. When an electrical current is applied to the coil, the plunger moves to close the valve, cutting off the flow. This makes the Normally Open solenoid valve particularly useful in applications where the natural state of the system should allow flow, and activation (or deactivation) is controlled by an electrical signal.

    Typically, Normally Open solenoid valves are employed in applications such as irrigation systems, HVAC systems, and industrial automation, where fluid flow needs to be regulated on demand. The flexibility of these valves to maintain an open state in the absence of electrical signals ensures their use in systems requiring automated control with a default "flow-on" condition.