In fire fighting, is the signal butterfly valve flanged or welded?

1. Do a good job of connecting with flanges.

2. Flange (flange), also known as flange flange disc or flange. A flange is a part that connects between pipes and pipes, and is used for the connection between pipe ends; There are also flanges used on the inlet and outlet of the equipment, which are used for the connection between two equipment, such as the reducer flange. Flange connection or flange joint refers to the detachable connection of flanges, gaskets and bolts connected to each other as a set of combined sealing structures.

Pipe flange refers to the flange used for piping in piping installation, and used in equipment refers to the inlet and outlet flange of equipment. There are holes in the flanges, and the bolts make the two flanges close together. The flanges are sealed with gaskets.

Flange sub-threaded connection (threaded connection) flange, welded flange and clip flange. The flanges are used in pairs, and the wire flange can be used for low-pressure pipes, and the welded flange is used for pressures above four kilograms. A gasket is added between the two flanges and then bolted.

The flange thickness is different for different pressures, and the bolts they use are also different. When the pump and valve are connected to the pipeline, the parts of these equipment and equipment are also made into corresponding flange shapes, also known as flange connections. All the connecting parts that are bolted around the periphery of the two planes and closed at the same time are generally called "flanges", such as the connection of ventilation ducts, this kind of parts can be called "flange parts".

However, this connection is only a part of the equipment, such as the connection between the flange and the pump, so it is not good to call the pump "flange parts". Relatively small ones, such as valves, can be called "flange parts".

3. Welding: also known as welding and grafting, is a manufacturing process and technology that joins metals or other thermoplastic materials such as plastics in a heated, high-temperature or high-pressure manner.

The fire signal butterfly valve is generally connected with a clamp type, and the butterfly valve body of the clamp type is not flanged, that is to say, the butterfly valve is clamped with two flanges on the pipeline and then clamped with screws. The second is that the butterfly valve body itself has a flange, and then it is connected with the flange on the pipeline with screws, which is the flange connection. Welding in fire fighting is relatively rare, and the pressure is not high!

Grooved flange connection, welded flange connection! Silk-spliced. Wire flange connection! Grooved signal butterfly valves are also available!

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.

Flange connection, use two flanges to clamp the signal butterfly valve in **.

Welding is generally not allowed in fire fighting, and it is all threaded (threaded) or grooved (buckle) connection.

There is a flange connection.

There are also welded flange connections.

Red to live wire, blue to neutral wire, green to ground.

When the fire signal butterfly valve is open, the measuring line is normally open between the two contacts, but after the signal valve is closed, it becomes normally closed, and the other one can be connected to the wire steel pipe.

The signal butterfly valve is generally installed in two parts: the front end of the water flow indicator of the horizontal main pipe on the floor; Trunk pipe wet alarm valve.

Front. First, when the floor spray system needs to be repaired, close the valve, open the end to discharge water, and empty the water in the sprinkler system on this floor for maintenance;

The second is that no water is allowed in the sprinkler system, and when the butterfly is closed, a signal will be transmitted to the fire alarm system.

The fire alarm system receives a monitoring signal (hence the name Signal Butterfly Valve) to alert the fire sprinkler system on this floor.

It is waterless and should be repaired quickly.

Scope of application of signal butterfly valve:

Signal butterfly valves are suitable for petroleum, chemical, food, pharmaceutical, papermaking, hydropower, shipbuilding, water supply and drainage, smelting, energy and other system pipelines. It can be used as conditioning and throttling equipment on a wide range of corrosive and non-corrosive gases, liquids, semi-fluids, and solid powder lines and vessels. It is especially widely used in high-rise buildings.

Fire protection systems and other pipeline systems that need to display the status of the hail call door opening and closing status.

Compact and lightweight, easy to disassemble and maintain, and can be installed in any position. The structure is simple and compact, and the 90° rotation opens and closes quickly. The operating torque is small, labor-saving and lightweight.

Achieve complete sealing and zero leakage in the gas test. Choose from different component materials for a wide range of media. The flow characteristics tend to be straight, and the regulation performance is good.

The number of opening and closing tests is up to 10,000 times, and the service life is long.

Signal butterfly valve is a kind of butterfly valve that can display the valve switch status, which is mainly installed on the fire protection pipeline system, and is an indispensable valve in the fire protection of high-rise buildings and other pipelines that need to display the valve switch status. It is especially widely used in high-rise building fire protection systems and other pipeline systems that need to display the valve opening and closing status.

Flange or orange spring groove. In addition to the pipeline in front of the alarm valve, other pipelines are not allowed to be welded or need to be galvanized twice after welding.

Flange connection, signal butterfly valve are all with their own flange.

Nowadays, most of the fire fighting uses grooved signal butterfly valves.

1. The signal butterfly valve is driven by the worm gear and worm transmission device to rotate the rotating shaft and butterfly plate to realize the opening and closing and control of the flow.

2. Rotate the worm gear and worm transmission device handwheel to make the butterfly plate achieve the purpose of opening and closing and adjusting the flow, and the handwheel rotates clockwise to close the valve.

3. There are two forms of micro switches set in the box of worm gear and worm transmission device:

a. There are two micro switches in the transmission box, which are open and closed, which act when the valve is fully open and closed, and turn on the "valve open" and "valve off" indicator light source in the control room, so that it can accurately display the valve switch status.

B, in the transmission device box set up a micro switch (butterfly plate full close position of 0 °), when the butterfly plate by the 0 ° 40 ° position of the micro switch support, the output valve closing signal, 40 ° 90 ° position when another pair of normally closed can output valve opening signal. The cam of the push-touch microswitch can be adjusted to show the different positions of the butterfly plate.

The signal butterfly valve should indeed be normally open, but will give an alarm signal when it is closed. You need to try that when the signal valve is closed, it is the group of wires that are connected, and the ones that are connected are connected to the fire module.

Connect to the input terminal of the input module, depending on the product, some need to add a resistor or terminator.

After the normally open point is closed, the alarm is sent through the output module.

Look at the instruction manual and pick it up! If you don't answer, just ask a sales representative to come and guide!