Deluge Valve For Fire Fighting
Anti-reset valve in deluge valve
The anti-reset valve is opened after the pressure relief of the control chamber, the water inlet channel of the control neck will be sealed to prevent the water reduction of the rain alarm valve due to the pressurization of the control neck. When the rain alarm valve needs to be closed, the anti-reset valve will open the water inlet channel of the control chamber for pressure replenishment, so that the diaphragm is reset. This can prevent the rain alarm valve in the state, due to water pressure fluctuations and misopening caused by misspray accident.
Description
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Anti-reset valve in deluge valve
The anti-reset valve is opened after the pressure relief of the control chamber, the water inlet channel of the control neck will be sealed to prevent the water reduction of the rain alarm valve due to the pressurization of the control neck. When the rain alarm valve needs to be closed, the anti-reset valve will open the water inlet channel of the control chamber for pressure replenishment, so that the diaphragm is reset. This can prevent the rain alarm valve in the state, due to water pressure fluctuations and misopening caused by misspray accident.
How to resetting the deluge valve?
1. The main inlet valve is closed and the main outlet valve is open.
2. The small inlet valve is closed, the emergency switch valve is opened, and the straight pipe water is discharged (the pressure is not zero).
3. "valve body outside manual reset mechanism test" to open counterclockwise direction.
4. The main control room shower valve needs to be reset. Press the reset button
5. Close the emergency switch valve.
6. Open the small water inlet valve.
7. The two pressure gauges on the rain valve are similar (note that the heel valve should be opened).
When the rain valve is reset, we need to following below points
1. During the reset process, avoid misoperation to make the main valve return to the position; otherwise, the valve may not work properly.
2. After extinguishing the fire, it is necessary to cut off the transmission pipe network first, and then close the solenoid valve, manual ball valve and end ball valve, so as to successfully close the main valve.
3. The role of the anti-reset device is similar to that of the low-discharge high-seal valve, but it is achieved through the principle of the rain valve. During the reset process, the anti-reset device will open a reset valve with a similar name, and use a larger pipe diameter and a larger flow rate to water the control neck. When the dynamic pressure in the control chamber rises to a certain degree, the anti-reset device will automatically close, which means that the reset of the rain valve is completed.
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