An electromagnetic valve, also known as a solenoid valve, is one of the commonly used industrial valves in piping systems in a manufacturing plant. the upper part of the valve body. Electromagnetic valves are commonly used to control the opening and closing of flow such as hot water, cold water, LPG / CNG gas, or can be used in some locations using high temperatures such as heat.
The electromagnetic valve consists of two types:
Electromagnetic valve direct control
Electromagnetic valve indirect control
What is the structure and operating principle of the solenoid valve?
The structure of the electromagnetic valve:
The electromagnetic valve consists of two separate parts: the valve body and the coil that regulate the valve opening and closing.
Valve body:
Valve materials include the following types: copper, stainless steel, PTFE Teflon. Depending on the environment, the user can choose the right valve material and ensure the valve life. This option is very important so please note with the customer.
Coil control valve coil:
In this part, the most important is the power control you want, because usually the design of the valve manufacturer is the only type of power control 24VDC & 220VAC is the most popular today. In some highly explosive substances such as gases, the manufacturer will have models with explosion-proof certificates to ensure the safety of the system.
Principles of electromagnetic valve operation:
The electromagnetic valve consists of two types of controls: the normally closed position valve or the normally open position valve. According to the structure of the valve as shown above, when the valve is closed, the force of the spring inside the valve or resistance due to high pressure help the valve to stop interrupting the interior of the pipe through. And when the valve is electrically operated, the coil operates to generate a magnetic field that acts on the spring inside the valve to help pull or push the spring directly connected to the valve disc to close or open the valve. And when the power is off, the valve returns to its original position.
Application:
On the market, there are many types of electromagnetic valves have the same name but the function is completely different.
Depending on the location and function of each type of electromagnetic valve used by the unit can choose which valve suits the needs of different users.
Used as: Compressed air, water, gas Gas or heat, hot oil, etc.
Note when using the solenoid valve:
Electromagnetic valves are fast-acting, low cost and compact valves. Suitable for non-critical installations such as cold water, hot water, compressed air. In contrast, the electromagnetic valve used in such materials as hot oil or heat is a specialized control valve and there are attached devices which function to cool the coil of the valve, as the heat transfer Heat from the valve body on the coil without heat dissipation, it is easy to affect the coil life of control coil or may damage, explosion.
For more information about electric control valves, pneumatic control valves or industrial valves of all kinds, please contact our technical team to write more about the product.