Solenoid valve is an electromechanically operated valve used to control the flow of liquids or gases in a system. It uses an electrical current to generate a magnetic field, which actuates the valve by moving a plunger inside the coil to open or close the flow path.
Key Components:
Solenoid Coil: An electromagnetic coil that generates a magnetic field when electrical current flows through it.
Plunger (Armature): A movable ferromagnetic rod inside the coil that responds to the magnetic field.
Valve Body: The housing that contains the flow path and connections (inlet and outlet).
Orifice: The opening through which fluid flows when the valve is open.
Spring: Helps return the plunger to its default position (typically closed) when the power is off.
Types of Solenoid Valves
Normally Closed (NC): Closed when de-energized.
Normally Open (NO): Open when de-energized.
Two-way: One inlet, one outlet.
Three-way / Four-way: Used for directional control in pneumatic/hydraulic systems