What is the function of the dripping ball valve of the fire rainwater valve group?

The main function of the drip valve of the alarm valve group is to discharge the water of the valve group before starting the diaphragm or inflating, which usually drips during flushing and starting the conversion. The ball valve is connected with the atmospheric sealed deluge valve disk, which is used to drain the micro-seepage in the rain system. Play a role in preventing misoperation or false alarm. It is equivalent to the function of retarder in wet alarm valve. It is normally open and will automatically close in case of fire to prevent the fire water from being discharged.

Working principle of rain alarm valve:

When there is a fire in the control area of the rain alarm valve, the fire center will send back a fire signal to the controller of the rain alarm valve. At this time, the electromagnetic valve in the rain alarm valve is opened, and the atmospheric pressure is connected, and the suction air releases the pressure in the diaphragm cavity. At this time, the pipeline water in the inlet direction of the valve will generate pressure to open the flap of the valve, and the water will supply water for the fire fighting equipment of downstream users through the valve. In addition, there is an anti-cash reset device in the valve body of the rain alarm valve, which can keep the valve open for a long time. When the fire is put out, the rain alarm valve is closed to stop the water flow in the pipeline and return to normal state.

Advantages of rain alarm valve:

1. The valve body is made of ductile iron, and the valve tube is made of high-grade copper. The whole valve is beautiful in appearance and the valve body is solid and practical.

2, the valve operation is simple, easy to learn and use.

3. In case of fire hazard, if the circuit is damaged and power is cut off, the anti-reset device in the rain alarm valve can ensure that the valve of the rain alarm valve is always open and ensure the continuous supply of fire water.

Warm reminder and rain alarm valves and corresponding fire valves are all wet alarm valves. The two alarm valves are basically the same in structure. The difference between the two is that the water storage conditions of the rain alarm valve are different under the normal state that the pipeline at the valve outlet is not on fire. In this state, the rainwater alarm valve has no water storage in the pipeline at the outlet of the valve, while the wet alarm valve stores water in the oil pipeline for a long time.