Solenoid actuated valves, also known simply as solenoid valves, are control valves that use solenoid actuators to control the flow of fluids (liquids or gases) in a system. Solenoid valves are electromechanically operated valves that open or close in response to an electrical signal. They are widely used in a variety of applications across industries due to their reliability, quick response times, and ease of automation. Here's an overview of solenoid actuated valves and how they work:

1. Solenoid Actuator:

   • The solenoid actuator is the key component of a solenoid valve. It consists of a coil of wire (solenoid) wound around a movable plunger or armature. When an electric current is applied to the coil, it creates a magnetic field that attracts or repels the armature, causing it to move.
   • Solenoid actuators are available in various configurations, including direct-acting and pilot-operated designs, to accommodate different flow rates, pressure ranges, and application requirements.

2. Valve Body:

   • The valve body houses the internal components of the solenoid valve, including the solenoid actuator, valve seat, and fluid passages. It is typically made of materials such as brass, stainless steel, or thermoplastics, depending on the application requirements.
   • The valve body contains inlet and outlet ports that allow fluid to flow through the valve when it is open and prevent flow when it is closed.

3. Valve Seat:

   • The valve seat is a sealing surface within the valve body that forms a tight seal with the valve disc or plug when the valve is closed. It prevents fluid from leaking through the valve when it is in the closed position.
   • Valve seats are typically made of materials such as rubber, PTFE (Teflon), or metal to withstand the pressure and temperature conditions of the fluid being controlled.

4. Valve Disc or Plug:

   • The valve disc or plug is the movable component of the solenoid valve that controls the flow of fluid through the valve body. It is connected to the solenoid actuator and moves in response to the movement of the actuator.
   • When the solenoid actuator is energized, it lifts or lowers the valve disc or plug, allowing fluid to flow through the valve. When the actuator is de-energized, the valve disc or plug returns to its closed position, shutting off the flow of fluid.

5. Coil:

   • The coil is a copper wire wound around the solenoid actuator. When an electrical current is applied to the coil, it generates a magnetic field that moves the actuator, opening or closing the valve.
   • Solenoid valve coils are available in various voltages and power ratings to accommodate different electrical systems and applications.

6. Spring:

   • In some solenoid valves, a spring is used to provide mechanical force to return the valve disc or plug to its closed position when the solenoid actuator is de-energized. The spring helps ensure reliable shut-off of the valve when no electrical power is applied.

Overall, solenoid actuated valves are versatile and widely used in applications requiring rapid response times, precise control, and automation of fluid flow. They are commonly found in industries such as HVAC, water treatment, automotive, medical devices, and manufacturing processes.