What is the function of a fire valve? The role of fire dampers, what is fire dampers

Fire dampers. It is a form of valve that memorizes the temperature control of molten alloy and closes by the action of gravity and the action of the spring mechanism. Memory alloys are also used in new products.

Produces deformation to close the valve. Its function is: when the flue gas temperature reaches 280, the person has basically been evacuated, the smoke exhaust has no practical significance, and the smoke has been on fire at this time, the valve is automatically closed to avoid the spread of fire.

The valve of fire fighting is mainly to control the action of fire water. When there is a fire, we open the fire door. At this time, there will be water in the fire pipe, and the fire can be extinguished quickly.

When there is a fire, the temperature of the air duct rises due to the influence of the surrounding temperature, and when the fire makes the air duct reach a certain temperature, the fusible sheet is blown off, and the valve plate originally connected by the fusible sheet is immediately disconnected from the fusible sheet and closed to prevent the air flow from passing through. In order to stop the continuous air supply to the system, the fire damper is equipped with an electrical signal and an interlocking device, which can cause the valve plate to send a signal when it is closed, so that the fan can stop running.

Here are some of the well-known brands recognized in the valve industry, which are widely recognized and have a high 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.

The role of fire safety valves.

The special safety valve for fire protection is a kind of safety protection valve, its opening and closing parts are in a normally closed state under the action of external force, when the medium pressure in the equipment or pipeline rises, it will be automatically opened when it exceeds the specified value, and the medium pressure in the pipeline or equipment is prevented from exceeding the specified value by discharging the medium outside the system, so what is the function of the safety valve? The safety valve is a kind of safety and protective valve, mainly used in pipelines and various pressure-bearing equipment, when the working pressure of the medium exceeds the allowable pressure value, the safety valve automatically opens to discharge the medium outward, and with the reduction of the medium pressure, the safety valve will be closed again, so as to prevent the danger of overpressure in the pipeline and equipment.

Fire damper is used in the isolation position of the fire protection zone of the building to cut off the pipes (mostly air ducts) passing through different fire zones, so as to prevent the fire hazards in one zone from spreading to other fire zones through the pipes. The principle is that the valve is equipped with a temperature sensing piece (fusible sheet), when the temperature is reached, the fusible sheet melts, and the valve mechanical device drives the valve blade to close.

There are three types of fire dampers.

One is a 70° fire damper.

One is a 280° fire damper.

There is also a less commonly used 150° fire damper.

No matter how many degrees of fire damper, its working state is to be installed on the ventilation duct or fire pipe; Usually in the normally open state, when the temperature is reached, the controller fuses, automatically closes, blocking the flame or heat wave; Prevent the spread of flames along ventilation ducts;

70° fire damper is, when the temperature reaches 70 °, it will automatically close when the temperature reaches 280 °, 280 ° fire damper will automatically close when the temperature reaches 280 °, and it will automatically close when the temperature reaches 150 °, not that it can only block the temperature of 70 °;

The fire general valve department does not need the CCCF of compulsory fire certification, but only needs the certificate and inspection report, because it does not belong to the special fire protection, only the fire protection special needs CCCF certification, that is, the fire certification.

Signal butterfly valves, gate valves, globe valves (check valves), ball valves, pressure reducing valves, wet alarm valves, solenoid valves, float valves, etc.

Butterfly valve gate valve.

There are about ten kinds of fire valves, including fire gate valves, butterfly valves, automatic exhaust valves, automatic pressure relief valves, alarm valve groups, safety valves, etc., fire valves are used in industrial and building pipelines as an accessory, mainly composed of valve body, opening and closing mechanism, valve cover, with simple structure, good sealing characteristics.

1. Main varieties

There are more than 10 kinds of fire valves, namely butterfly valves, automatic pressure relief valves, safety valves, fire gate valves, automatic exhaust valves, alarm valve groups, signal butterfly valves, silencing check valves, automatic liquid level control valves, globe valves, hydraulic control waterproof hammers, etc.

2. Product introduction

The fire valve is an important accessory used in the industrial and building pipelines, which is generally composed of three parts, namely the valve body, the opening and closing mechanism, and the valve cover, and the structure of the fire valve is simple, easy to use and has good sealing, which is suitable for use in the fire pipeline.

3. Precautions

The service life of the fire valve is long, and it can generally be used for a long time, but in the process of use, the situation of the valve should be often observed, and after the valve is rusty, it should be coated with lubricating oil and other items to reduce the friction of the valve and avoid affecting the normal use.

Fire gate valves, butterfly valves, automatic exhaust valves, automatic pressure relief valves, alarm valve groups, pressure reducing valves, safety valves, signal butterfly valves, globe valves, gate valves, silic check valves, hydraulic control waterproof hammer valves, automatic liquid level control valves, etc. Fire valve is an important attachment for industrial and building pipeline control, this handout focuses on the practical application of fire valve, the detailed principle and structural section view refer to the relevant information books, fire valve is composed of three parts: valve body, opening and closing mechanism, and valve cover. <

Fire gate valves, butterfly valves, automatic exhaust valves, automatic pressure relief valves, alarm valve groups, pressure reducing valves, safety valves, signal butterfly valves, globe valves, gate valves, silic check valves, hydraulic control waterproof hammer valves, automatic liquid level control valves, etc. Fire valve is an important attachment for industrial and building pipeline control, this handout focuses on the practical application of fire valve, the detailed principle and structural section view refer to the relevant information books, fire valve is composed of three parts: valve body, opening and closing mechanism, and valve cover.

The fireproof valve is a form of valve that is closed by the temperature control of fusible alloy, the action of gravity and the action of the spring mechanism.

The fire valve is a normally closed valve, which is opened by the control center through 24V DC or manually, and automatically closes at 280, and the reset must be manual. The smoke exhaust air outlet of the system can also be used with a normally closed fire and smoke exhaust outlet to cancel the smoke exhaust fire damper on the branch pipe. In case of fire, the tuyere is turned on by the control center through 24V DC power or manually opened, and automatically closed when the smoke temperature reaches 280, and the reset must also be manual.

The entrance of the smoke exhaust fan room should also be installed with a smoke exhaust fire damper to spread to the floor where the fan room is located with fire prevention potential.

The role of the fire valve is:

The fireproof valve is a form of valve that is closed by the temperature control of the easy-to-melt starvation gold, the effect of gravity and the action of the spring mechanism, and the new products also use the memory alloy to produce deformation to close the valve.

The fire valve is a normally closed valve, which is opened by the control center through 24V DC or manually, and automatically closes at 280, and the reset must be manual. The smoke exhaust air outlet of the system can also use a normally closed fire and smoke exhaust port to cancel the smoke exhaust and anti-teasing limb fire arrest valve on the branch pipe. In case of fire, the tuyere is opened by the control center through 24V DC or manually, and automatically closes when the smoke temperature reaches 280, and the reset must also be manual.

The entrance of the smoke exhaust fan room should also be installed with a smoke exhaust fire damper to spread to the Shanhu layer where the fan room is located with fire prevention potential.

The role of the fire valve is: