What is the use of the flange connection valve structure length basic series

The basic series of flange connection valve structure length is the general series, and all national standard valve products can be found in it.

However, each valve variety has one to three designated series, such as the gate valve uses the first series, the plug valve and ball valve use the first series, and so on.

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 length of the valve structure is the distance between the two end faces!

The length between the horizontal lines on both sides of the valve.

A straight-through valve is the distance between the inlet and the outlet.

The valve is a pipeline accessory that controls the flow or stop, flow direction and flow speed of the medium in the pipeline;

A flange is an interconnected part between shafts and can be used for connections between pipes and accessories.

Flanges can be used as a connection between the valve and the pipe.

The difference between valve and flange can be explained in detail below:

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Valves are pipeline accessories used to open and close pipelines, control flow direction, regulate and control the parameters (temperature, pressure and flow) of the conveyed medium. According to its function, it can be divided into shut-off valves, check valves, regulating valves, etc.

Valves are control components in fluid transportation systems, which have the functions of shut-off, regulation, diversion, prevention of backflow, pressure stabilization, diversion or overflow pressure relief. Valves for fluid control systems range from the simplest shut-off valves to the most complex valves used in automated control systems.

Valves can be used to control the flow of various types of fluids such as air, water, steam, various corrosive media, slurries, oils, liquid metals and radioactive media. Valves are also divided into cast iron valves, cast steel valves, stainless steel valves, etc.), chrome-molybdenum steel valves, chrome-molybdenum vanadium steel valves, duplex steel valves, plastic valves, non-standard customized valves, etc.

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Flange (tool part).

Flange, also known as flange disc or flange. A flange is a part that is connected to each other between shafts 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".

The difference between a valve and a flange is:

Valve: can stop the flow of liquids at will. Flange: It is a pipe connection part.