direct acting solenoid valve： principles, applications, and benefits
Release time:2025-11-13 07:56:12
A Direct Acting Solenoid Valve is a type of electromechanical valve used to control the flow of fluids or gases in a system. Unlike other types of solenoid valves, which rely on external pressure to assist in opening or closing the valve, direct acting solenoid valves use the electromagnetic force to directly move the valve’s internal components. This allows them to be particularly effective in situations where fast response times and precise flow control are required. This article explores the working principles, applications, advantages, and limitations of direct acting solenoid valves, shedding light on why they are a popular choice in many industrial and commercial applications.
Working Principle of Direct Acting Solenoid Valve
A direct acting solenoid valve consists of several key components： a coil (solenoid), a plunger (armature), a spring, and a valve body with an orifice. When an electric current flows through the solenoid coil, a magnetic field is created, which pulls the plunger or armature towards the coil. This action directly opens or closes the valve, allowing or blocking the flow of fluid.
The key feature that differentiates direct acting solenoid valves from pilot-operated solenoid valves is the lack of dependence on external system pressure. In pilot-operated valves, pressure is needed to assist the operation of the valve. However, in direct acting solenoid valves, the electromagnetic force generated by the solenoid itself is sufficient to operate the valve regardless of the system’s pressure. This makes them particularly useful in low-pressure applications where external pressure assistance is not available or needed.
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