What is a Dry Alarm Valve? What is the name of the valves above and below the dry alarm

Here are some of the well-known brands recognized in the alarm 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.

Summary. Hello, dear, the upper and lower valves of the dry alarm are called system control valves.

Hello, dear, the upper and lower valves of the dry alarm are called system control valves.

The main valve is composed of the valve body, inner seat, outer seat, disc assembly, bonnet and other parts. The disc assembly and the inner and outer seats divide the main valve into three parts, the upper chamber, the middle chamber and the lower chamber. The upper chamber is the valve cavity of the part above the closed valve disc, which is connected to the system pipe network and is filled with pressure gas; The middle chamber is the residual skin annular space enclosed by the valve disc of the closing vertical difference and the inner and outer seat rings, because the valve disc closes the outer seat ring and the inner seat ring at the same time, so the middle cavity is neither communicated with the upper cavity nor the lower cavity, and communicates with the atmosphere through the orifice in front of the book; The lower chamber is the valve cavity of the lower part of the closed valve disc, which is connected to the pipe on the water supply side and is filled with pressurized water.

When the valve disc is closed, the action area of the lower chamber pressure water on the valve disc is smaller than the action area of the upper chamber pressure gas on the valve rock digging valve, and the ratio of the two is the differential ratio. For example, the differential ratio of the dry alarm valve produced is about 1:5.

It can be said that only the inflation pressure of water pressure 1 4 can overcome the thrust generated by water pressure and close the valve disc. According to the differential ratio, compared with different water supply pressures, the following table gives the appropriate inflation pressure of the coarse key nucleus to the bright difference.

Answer] Liquid foci: d

Dry alarm valve valve group composition: dry alarm valve, hydraulic alarm bell, pressure switch, pressure gauge, signal butterfly valve liquid burial judgment, water injection funnel.

Hello dear kiss, orange shirt kiss for you to inquire about the test of a dry alarm valve, should pay attention to ten aspects: 1First of all, check whether the appearance of the alarm valve is intact, check whether the connection of each fitting, the test piece, and the sealing round ruler cavity part are intact and corrosion-free; 2.

Check the dimensions of each interface, measure its internal temperature and pressure; 3.testing the emission stability of the emission system; 4.Check whether the alarm device works according to the requirements; 5.

Check whether the actuator is free and flexible, and whether it meets the design requirements; 6.Check whether the alarm works according to the design requirements; 7.Calibrate the accuracy of the electronic thermostat and check the sensitivity of the sensor; 8.

Check several control states of the shut-off valve; 9.Check the physical properties and sealing quality of the valve body material; 10.The calibration work is a communication system between the fixed point, the alarm point and the end point and the alarm device.

The above is my introduction to the dry alarm valve test, I hope it will be helpful to you.

Hello, the dry alarm valve is used in the fire extinguishing system, it is a special valve, and the first shed scale is used to control the spraying of dry powder or other dry fire extinguishing agent particulate matter. Installing a sprinkler on a dry alarm valve allows it to spray dry extinguishing agent to the area where the fire needs to be extinguished. The following factors should be considered when selecting a dry alarm valve nozzle:

1.Fire type: Different fire types require the use of different kinds of dry extinguishing agents.

The corresponding sprinkler head and the corresponding fire extinguishing agent should be selected according to the demand. 2.Sprinkler form:

Common forms of nozzles include direct injection, rotary spraying and atomizing nozzles, etc., and choosing the right form can better meet the needs of various scenarios. 3.Number of sprinklers and layout:

Determine the number and layout of the sprinklers according to the area and density of spraying according to the need. 4.Printhead Material:

In order to ensure the corrosion resistance and high temperature resistance of the nozzle, stainless steel or copper is usually used. To sum up, the selection of dry alarm valve sprinklers should be selected according to actual needs, and it is best to consult a professional fire engineer or manufacturer to ensure that the selected sprinkler heads are compatible with the system and meet the relevant standards.