The solenoid valve works according to the principles of electromagnetism. It comes in different types and sizes according to process demand. Solenoid valves are basically used to control the operation of disconnection and connection.
Basic principle: – Electromagnetic induction
Electromagnetic induction: When current flows through a current-carrying coil and a piece of soft iron is placed between it, it becomes magnetic and acts like a magnet.
Coil Law: According to the law of coils, if DC current passes through a solenoid valve, the piece of iron that is placed between it acquires the property of a magnet, which can be represented by the law of right angle.
Definition: A solenoid valve is an electromechanical valve. The valve is controlled by an electric current. Although it is a solenoid valve, in the case of a two-port valve, the flow changes between “on” or “off”. But in the case of a three-way valve, the flow between the inlet and exhaust outlets changes.
Solenoid valve: A solenoid valve is a coil that is fastened in a tight coil. These terms were discovered by the French physicist ANORE-MARIE-AMPERE in (1775-1836). A solenoid valve is a coil of wire that carries a current that acts like a magnet when current passes through it. The term may refer to a variety of converters that convert energy into linear motion.
Coil with piston in SOV
Solenoid valve is used to control the element in the fields. Used to turn off, release, close, distribute or mix the fluid.
The following are used in SOV.
- Valve body
- Input port
- Output port
- Wiring connection
How the solenoid works:
The media made by the solenoid enters the valve through the inlet valve (port 2 as mentioned above). The media must flow through the closed and open pistons. The valve image above is usually a closed valve that uses a spring that presses the tip of the piston toward the orifice. The sealing material at the tip of the piston prevents media from entering the orifice until the piston is lifted by an electromagnetic field.
Solenoid offers fast and safe switching, high reliability, long life, good medium performance of materials used, low control power and compact design.
Solenoid valve 2/2:
For example, a two-way valve has two ports if the valve is open. The two ports are connected and the fluid flows through the two ports. If the valve is closed, the port is disconnected.
If the valve is open and the solenoid is not energized, this term is usually called open. When the valve is closed and the solenoid valve has no power, the term is commonly called closed.
Solenoid valve 3/2:
In a normally closed 2/3 solenoid valve, the outlet is connected between the outlet and the exhaust, but when the coil is energized, the outlet is connected to the inlet. Normally open, the output is connected between the input / output, but when the power cord is turned on, the output is connected between the output and the input.
Solenoid valve 4/2:
In a 4-way solenoid valve, normally closed, the inlet connection from output 2 and output 1 is connected to the exhaust first. When the coil is energized, I / p is connected with o / p1 and o / p2 with exhaust. Normally open, I / P connects with O / P1 and O / P2 with exhaust. When the coil is energized, I / P is connected to O / P2 and O / P1 to the exhaust.
Solenoid valve 2/5:
This solenoid valve is used in cases where a dual operation process is required. In dual type actuators, 2.5 sides are used. There are 1 I / P, 2 O / P, 2 outputs. Normally closed, I / P is connected with O / P2 and O / P1 with exhaust 1. When the coil is energized, I / P is connected to O / P1 and O / P2 to Exhaust 2. Normally open, when the coil is without power, I / P is connected to Exhaust 2 with O / P1 and O / P2. When the coil is energized, I / P is connected to Exhaust 1 with O / P2 and O / P1.
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