Solenoid Valve Working and Types
Solenoid Valve Working and Types
A Solenoid valve opens and closes by an electromagnetic force so it is also called an Electromagnetically operated valve. If initially, the valve is in close condition then after application of electromagnetic force it will lift the plunger and the valve opens. It is an automatic valve. Different types of solenoid valves are available in the market based on application.
It is a very simple invention of physics. It is nothing but the hollow cylinder of thin wire. When the current is passed through the wire that system will act as a magnet. This magnetic field will be used to do many tasks. The higher the current passes higher will be the magnetic effect. Nowadays it is used in almost every electronic appliance.
As it is an automatic valve first we need to understand when we need to open and close the valve. When the sensor senses that we need fluid on the outlet side the current will flow in the solenoid and due to which the plunger will act against spring and lift from the orifice. This will allow the fluid to flow. After the sensor senses that enough quantity of fluid is taken then it will stop the current and due to which the plunger will again chock the orifice and closes the valve.
In the case where we need more flow of fluid then the sensor will send the message to the power system and it will pass more current. Due to an increase in current, the magnetic field will increase and the plunger will lift more than the previous lift which will allow more fluid to flow through the orifice. So, based on the requirement sensor passes the current and according to that plunger will lift.
It is the simplest type of solenoid valve. It does not require any external force to open and close the valve. It is very fast-acting than other types. It is usually of two types one is NC (normally close) and the other is NO (normally open). In NO valve plunger is in an open condition in the absence of current flow as the current flows it will chock the orifice by the plunger and stops the flow of fluid. The exactly opposite process happens in the NC valve.
It is a more complex type of solenoid valve. Here we are introducing a diaphragm inside the valve. In this valve, we are separating the inlet port and outlet port by the diaphragm. Above the diaphragm, there is one chamber that is always pressurized by inlet fluid and keeps the diaphragm in close condition. As the solenoid is energized it will lift the plunger due to that the pressure inside the chamber above the diaphragm will reduce. After that due to pressure reduction in the chamber diaphragm will open and the flow of fluid will start. Refer to the video below to understand the working of the valve. It requires less power than a direct-operated solenoid valve.
It contains two openings for the flow of fluid. It is in normally close condition as the current flows plunger will lift and fluid will pass.
It contains three openings and two orifices inside the valve. Orifice opens and closes alternatively. Two different designs are available 1) Two inlet opening ports and one outlet port 2) Two outlet ports and one inlet port. The first one is used when we need to mix two liquids and the second is used when we need to separate one stream into two.
It contains two pressurized inlet ports and two exhaustive outlet ports.
Reference:- doityourself, startersolenoid, brighthubengineering, omega
With high quality products and considerate service, we will work together with you to enhance your business and improve the efficiency. Please don't hesitate to contact us to get more details of Electromagnetic Directional Valve DSG-02, Electromagnetic Directional Valve 4WE10, Electromagnetic Directional Valve 4WE6.