A solenoid and a valve are two different components, but they often work together in many automation systems. A solenoid is an electromagnetic device that converts electrical energy into motion. When current flows through its coil, it creates a magnetic field that moves a plunger or core. This motion can then be used to push or pull another part. By itself, a solenoid only provides movement — it doesn’t control the flow of any liquid or gas.
A valve, on the other hand, is a mechanical device that regulates the flow of a fluid by opening, closing, or restricting a passage. When a solenoid is attached to a valve, it becomes a solenoid valve. In this setup, the solenoid acts as the actuator, and the valve body controls the actual fluid movement. So, the solenoid is responsible for the action, while the valve is responsible for the function. Together, they enable fast and automatic control of fluid systems used in industries, irrigation, and home appliances.