A Normally Open Solenoid Valve (NOSV) is a critical component in various fluid control systems, designed to control the flow of liquids and gases. These valves are widely used in automation, process control, irrigation, and HVAC systems. Unlike Normally Closed (NC) solenoid valves, which remain closed until activated, Normally Open (NO) solenoid valves remain open until an electrical signal is applied to close them. This article will explore the functioning, applications, and advantages of Normally Open Solenoid Valves.

What is a Normally Open Solenoid Valve? A Normally Open Solenoid Valve is a type of electrically controlled valve that allows fluid to flow through it when in its default state, i.e., when no electrical current is supplied to the solenoid coil. The flow of fluid is interrupted only when the solenoid is energized, activating the valve to close and stop the fluid flow. The valve typically includes a spring-loaded mechanism that holds the valve open in the absence of electrical current. This type of valve operates based on the principle of electromagnetism. When electricity is applied to the solenoid coil, it creates a magnetic field, which attracts a metal plunger or core, causing the valve to close. Once the power is turned off, the spring mechanism reopens the valve, resuming the flow of fluid.