In recent years, China has become a global leader in manufacturing solenoid valves, with a growing number of companies specializing in normally closed solenoid valves. These valves play a critical role in numerous industries, including automation, fluid control, and HVAC systems, where they control the flow of fluids by opening or closing the valve in response to an electrical signal. China, with its strong industrial base, skilled labor, and cost-effective production methods, has established itself as a key hub for producing high-quality solenoid valves, particularly the normally closed variants.
Understanding Normally Closed Solenoid Valves Before diving into the role of Chinese manufacturers, it’s important to understand what normally closed solenoid valves are. A normally closed solenoid valve is a type of electromechanical valve that, in its default state, remains closed. When an electric current is passed through the solenoid coil, it generates a magnetic field, which moves the plunger or armature to open the valve, allowing fluid or gas to pass. Once the power is turned off, the valve automatically returns to its closed position. This type of solenoid valve is widely used in applications where the default action is to block the flow of fluid until an external electrical signal is received, such as in water treatment plants, pneumatic systems, fuel delivery systems, and industrial machinery.