The fire prevention valve is a valve that is installed at the end of the central air -conditioning wind. The fire valve is widely used. There are many types of fire valves. There are many types of firewood valves. The following editors will take you to understand the following fire valves.
1. Frequently open 3C smoke fire prevention valve
1. 3C to smoke fire prevention valve is generally opened. When the fire occurs, after the control center outputs the DC24V power supply, the valve will be closed automatically.
2. When the pipeline temperature reaches 280 ° C, it is easy to melt the metastic section, and the valve is automatically closed.
3. The output valve closed the signal, and the smoke exhaust fan also stopped working.
4. Turn off manually, you need to open manually.
Second, the normal closed smoke exhaust fire prevention valve, also known as the secondary action smoke fire fire prevention valve
1. Under normal circumstances, when the fire occurs, the DC24V power supply is entered by the control center, and the valve is opened.
2. The output valve opens the signal, and the fire smoke exhaust fan is also started.
3. Open manually, you need to manually reset and close.
4. When the pipeline temperature reaches 280 ° C, the fuse is fused, and the valve is closed in order under the action of gravity.
3. Remote control -type smoke and fire prevention valve (steel rope control type)
1. All functions with normal closed fire valves
2. Can be opened manually and closes manually.
3. Steel rope control distance standard is 6M
Fourth, automatic reset smoking fire prevention valve
1. Under normal circumstances, when the fire occurs, the DC24V power supply is entered by the control center, and the valve is opened.
2. When the pipeline temperature reaches 280 ° C, the fuse is fused, and the valve is closed under the action of gravity.
3. You can open it manually.
4. After the valve is opened, it does not need to be manually reset. You only need to enter the DC24V power supply, and the valve can be reset to the original closed state.
5. The output valve opens the signal and controls the changes in the smoke exhaust fan to start and stop working with the signal.
The above is the introduction of the fire prevention valve