What is the automatic drip valve in the rain alarm valve group for?

This ball valve is connected to the valve disc of the atmospheric sealed deluge valve to discharge the water that is slightly permeable from the deluge system. It plays a role in preventing malfunction or false alarm. Equivalent to the role of a retarder in a wet alarm valve.

Deluge Valve Encyclopedia:

Deluge valve automatic water supply control valve, with the help of operation auxiliary mechanism to supply water to the deluge system of open piping system or pre-action system of closed piping system of an automatic water supply control valve, its disc can be opened by electric, mechanical or other means.

Characteristic role. The characteristics of the pre-action system are that it can take into account both dry and wet systems, usually there is no water in the pipeline, and the alarm system is linked, once the alarm can be pre-filled with water, the sprinkler head is closed, and the system uses a rain shower valve. This kind of system has high requirements, and the advantage is that there is no water in the pipe at ordinary times, which can prevent accidental spraying or freezing cracking.

The biggest difference between the deluge system and the pre-action system is that the parts used are different, and the design flow rate and water required are different. As for the other differences in how it works, it's not that big.

Here are some of the well-known brands recognized in the deluge valve industry, which are widely recognized and have a great reputation. While rankings may vary depending on time and market conditions, the following brands are generally considered to be among the top brands in the valve industry:

The following influential first-line brands of water system valves and industrial valves can be used as a reference, but for reference only: Suzhou Neway Valve, Shanghai Guanlong Valve, Shanghai Qizhong Valve, Sanhua, Su Yan, Shentong, Su Valve, Nanfang, Jiang.

First, the word Yao. The above manufacturers are only estimates and references, and the specific situation may vary or fluctuate at any time due to changes in a series of factors such as changes in the market, the size of the competition pattern, and the stability of product quality. As an indispensable key device in industrial production and civil facilities, the quality and reputation of the valve brand directly affect the satisfaction and trust of users.

These brands are known in the valve industry for their innovative technology, high-quality products and reliability. It is important to note that the market and industry are evolving rapidly, and different rankings may vary depending on time and region. For the most up-to-date ranking information, it is recommended to refer to industry reports, professional organizations or market research data for more detailed and accurate information.

Answer]: Analysis of the causes of failure: 1. There are quality problems in the product 2. After installation and commissioning or regular testing and fire extinguishing, the remaining water in the system side pipe is not exhausted 3

1. Replace the problematic product or component 2. Open the water discharge control valve to remove the residual water in the pipeline on the side of the system 3. Start the rain alarm valve and use clean water to flush the impurities left on the sealing surface.

Answers]: a, d, e

The leakage of the automatic drip valve in the rain alarm valve group may be due to the following reasons: (1) There is a quality problem in the product. (2) After installation and commissioning, or regular testing and fire extinguishing, the residual water in the side pipe of the system is not drained.

3) The spherical sealing surface of the slag inspection line in the spherical surface of the diaphragm of the rain alarm valve cannot be completely sealed due to the debris left over from the construction and the impurities in the unclean fire water.

Summary. How to alarm and control the deluge alarm valve area, hello dear<> after the deluge valve is opened, the high-pressure fire water enters the system, and the pressure switch is touched, and the alarm indicates that the deluge valve has been opened. At the same time, the high-pressure fire water makes the alarm bell rotate by impacting the water wheel, and the alarm sound is issued.

When there is a fire, the atmospheric pressure is connected through the outlet of the control chamber, the pressure in the control chamber drops sharply due to the effect of the pressure reducing device at the inlet of the control chamber, when the pressure in the control chamber is lower than the water supply pressure to a certain value, the force acting on the bottom of the cover upwards is greater than the force acting on the valve disc downward, the valve disc of the deluge valve is opened by the water supply pressure, then the water flows into the system side for fire extinguishing, and the pressure gauge in the control chamber is controlled by the fire detection system installed in the protection zone and the driving system of the deluge valve disc at the same time, It can be electrical, hydraulic (wet), pneumatic (dry).

How to alarm control the rain alarm valve area, hello pro-<>

After the deluge valve is opened, the high-pressure fire water enters the system and touches the pressure switch to give an alarm, indicating that the deluge valve has been opened. At the same time, the high-pressure fire water makes the alarm bell rotate by impacting the water wheel, and the alarm sound is issued. When there is a fire, the atmospheric pressure is connected through the outlet of the control cavity, as drafted due to the effect of the pressure reducing device of the inlet in the control cavity, the pressure in the control cavity drops sharply, when the pressure in the control cavity is lower than the water supply pressure to a certain value, the force acting on the bottom of the cover upwards is greater than the force acting on the valve disc downward, the valve disc of the deluge valve is opened by the water supply pressure, then the water flows into the system side for fire extinguishing, The pressure gauge in the control chamber is controlled by the fire detection system installed in the protection area and the drive system of the deluge valve disc, which can be electrical, hydraulic (wet) and pneumatic (dry).

The deluge alarm valve controls how many sprinkler heads.

Hello dear <>

The specification requires that the number of sprinklers controlled by the alarm valve group of the pre-action system shall not exceed 800, and the number of dry type shall not exceed 500.

Answer]: A rain alarm valve valve group consists of: rain alarm valve, hydraulic alarm bell, pressure switch, pressure gauge, signal butterfly valve, crack Jingzao solenoid valve, manual emergency start station draft Hu.

Does the toilet need to be moved during bathroom renovation? With these 3 methods, you won't be entangled after seeing it.

Function: It plays a role in preventing malfunction or false alarm. Equivalent to the role of a retarder in a wet alarm valve. It is usually open, and it will automatically shut off in the event of a fire to prevent the fire water from draining out.

Deluge valve automatic water supply control valve.

The biggest difference between the deluge system and the preaction system is that the former is an open sprinkler for an open system, and the latter is a closed sprinkler for a closed system. If you have to ask what is the difference between the deluge valve and the pre-action valve, it can be understood that the pre-action valve is a combination of the deluge valve and the check valve.

Atlas 04S206, page 21, etc., it can be seen that the pre-action system uses a rain shower valve!