A solenoid valve is a simple and effective device used in refrigeration systems.solenoid valve coil It controls when the liquid refrigerant is released into the atmosphere. Solenoids are also used in some food processors and in automatic soda machines. When a small solenoid is introduced into the lines, it causes the flow of the refrigerant to increase and eventually expand to a specific pressure. 

solenoid valve coil The function of a solenoid valve coil lies in its ability to convert mechanical energy to electrical power. The coil usually consists of steel wire (or sometimes aluminum) wound tightly around a steel hollow shape. When electrical current flows through the insulated coil, a strong magnetic field is produced. This is done by positioning a strong ferromagnetic core in the insulated coil. The magnetic field induces an electric field that wraps around the steel coil. This induced electric field then causes the movement of the plunger or diaphragm which results in the closing or opening of the valve. 

To start, the solenoid valve coil has an inlet port, where liquid islet is received; an outlet port, where the liquid is extracted; and a plunger, which act as a diaphragm for restricting the flow of the refrigerant gas to the output port. On one side of the valve there may be a spring-loaded seat. This seat allows the plunger to force the closed and opened of the valve by its tension or resilient force. In the other side of the valve there is a rubber or plastic diaphragm which stores the mechanical energy of the plunger until it is released. 

To close the valve, the spring-loaded seat pushes the diaphragm outward, while the rubber or plastic diaphragm is forced into a sealed or closed by a spring that is wound around the entire coil. To open the valve, the spring-loaded seat must be squeezed to allow the diaphragm to push outward or closed by its spring pressure. Then the valve can be turned on and off repeatedly. It must be noted that any solenoid valve which has not been properly set up will act up each time the valve is closed or opened. 

One method used to setup a solenoid valve coil in a closed system is by use of tape wrapped coil. The advantage of wrapping the coils using tape is that there is no need for drilling holes through the refrigeration lines. The advantage of encapsulation is that the solenoid valve coil can be positioned close to the point where the flow control is needed and yet not affect the refrigeration system's efficiency. 

Solenoid valves work by letting a current flow from an alternating current through a circuit until it encounters a load that will stop the flow. The solenoid valves work by contacting a conductive load. The current flowing through the solenoid will convert electrical energy to mechanical energy, which is then converted to heat in the interior of the tank. In the closed system, when the solenoid valve is closed, the flow of current will not affect the temperature of the water in the system.