A Normally Open Solenoid Valve (NO solenoid valve) is an essential component widely used in fluid and gas control systems. Its primary function is to allow or block the flow of a medium based on whether or not electrical power is supplied to the solenoid coil. Understanding how NO solenoid valves work and their numerous applications can provide insight into their crucial role in industrial and commercial systems.
What is a Normally Open Solenoid Valve? A Normally Open Solenoid Valve is a type of valve that, in its default state, remains open, allowing the free flow of liquids or gases through the valve. The “normally open” designation refers to the valve’s resting position when no power is applied to the solenoid coil. When the solenoid is energized, the valve closes, halting the flow of the medium. The valve operates by using an electromagnetic solenoid to control a plunger or diaphragm. In a de-energized state, the spring-loaded mechanism or the weight of the plunger keeps the valve open. However, once electrical current flows through the solenoid, it creates a magnetic field that moves the plunger or diaphragm, shutting off the flow.