What Are The Types of Solenoid Valves?

There are many classifications of solenoid valves, the key is to see what classification is based on, this article mainly classifies according to the use of solenoid valves, and introduces the use of specific classifications of solenoid valves.

The solenoid valve is a mechanism that switches the valve through the suction force of the coil. There are many types of solenoid valves. Different solenoid valves play a role in different positions of the control system. The gas solenoid valve is used for gas emergency cut-off, the signal feedback solenoid valve is used for signal output feedback, and the high-temperature steam solenoid valve is dedicated to high temperature. Media occasions, etc. This article is dedicated to various solenoid valves and describes their specific uses in detail.

1. Pilot solenoid valve

When energized, the valve stem is lifted by the electromagnetic force, and the pilot valve port is opened. At this time, the upper cavity of the solenoid valve releases pressure through the pilot hole, and a pressure difference between the upper and lower sides is formed around the main valve core. Under the action of the pressure difference, the fluid pressure pushes The main valve core moves upward to open the main valve port. When the power is off, under the action of the spring force and the gravity of the main valve core, the valve stem resets, the pressure in the upper chamber of the solenoid valve rises, and the fluid pressure pushes the main valve core to move downward, the main valve port is closed. It is used in working conditions where there is a pressure difference between the front and back of the valve and the pipeline system with a large diameter.

2. Direct-acting solenoid valve

The electromagnetic coil generates electromagnetic force to lift the closing member from the valve seat, and the valve opens. When the power is turned off, the electromagnetic force disappears, the spring presses the closing member on the valve seat, and the valve closes.

3. Diesel engine stop solenoid

Diesel engine stop solenoid refers to the solenoid valve used in petroleum gas, gas, gas, gas, or natural gas pipeline systems. The solenoid valve is usually open. In an emergency, it can be closed quickly to cut off the gas and other media to avoid accidents.

Application range: gas automatic control, gas automatic control, gas automatic control, petroleum liquefied petroleum gas automatic control, biogas automatic control, gas equipment, gas alarm and gas equipment, etc.

4. Water solenoid valve,

It is suitable for water or liquid as the working medium, and can automatically control or remotely control the on-off of water, oil, liquid, and other working medium pipelines. Because the valve is sealed with rubber, the cleanliness of the working medium is greatly reduced, and it has the characteristics of fast opening and closing and high reliability.

5. Gas solenoid valve

Gas solenoid valve, the main application is as follows: it is connected to the combustible gas leakage monitoring instrument. When the instrument detects the leakage of combustible gas, it will automatically and quickly close the main gas supply valve, cut off the gas supply, and prevent the occurrence of vicious accidents in time.

6. Oil solenoid valve

It refers to the solenoid valve used to control the opening and closing of oil media such as oil, petroleum, crude oil, diesel oil, hydraulic oil, heat transfer oil, lubricating oil, etc., generally made of brass or stainless steel, explosion-proof, high-pressure resistant, resistant High temperature, corrosion resistance.