Solenoid-operated inline air control valves function by using an electromagnetic solenoid to control the flow of air through a valve. When electrical current passes through the solenoid coil, it generates a magnetic field that moves a plunger or armature within the coil. This movement opens or closes the valve, allowing or stopping the flow of air.
The valve typically consists of a solenoid coil, a plunger, a spring, and a valve body with ports for air entry and exit. In a normally closed valve, the spring holds the plunger against the valve seat, preventing air flow. When the solenoid is energized, the magnetic field pulls the plunger away from the seat, opening the valve and allowing air to pass through. Conversely, in a normally open valve, the plunger is held away from the seat by the spring, and energizing the solenoid moves the plunger to close the valve.
These valves can be direct-acting or pilot-operated. Direct-acting valves use the solenoid to directly move the plunger, suitable for low-flow applications. Pilot-operated valves use the solenoid to control a smaller pilot valve, which in turn controls a larger main valve, suitable for higher flow rates.
Solenoid-operated inline air control valves are used in various applications, including pneumatic systems, automation, and process control, due to their fast response time, reliability, and ease of integration with electronic control systems. They offer precise control over air flow, pressure, and direction, making them essential components in many industrial and commercial systems.