What does valve category mean and what category does the valve belong to

Can the valve category fill the main door and branch valve", no, too general.

The categories of valves are divided into: butterfly valves, gate valves, globe valves, ball valves, check valves, regulating valves, steam traps and power valves, etc., each type of valve has a very different variety, for example, gate valves can be divided into: self-sealing gate valves, knife gate valves, cryogenic gate valves, thermal insulation jacket gate valves, water seal gate valves, vacuum gate valves, elastic seat seal gate valves, signal gate valves, buried gate valves, forged steel gate valves, cast iron gate valves, etc.

It is not possible to fill the type of valve in this way.

1. Valves are divided into the following according to their use and function

Shut-off valves are mainly used to cut off or turn on the flow of media. Including gate valves, globe valves, diaphragm valves, ball valves, plug valves, disc valves, plunger valves, ball plug valves, needle instrument valves, etc.

Control valves are mainly used to regulate the flow and pressure of the medium. Including regulating valves, throttle valves, pressure reducing valves, etc.

Check valves are used to stop the backflow of media. Check valves of various constructions are included.

Diverter valves are used to separate, distribute, or mix media. Including distribution valves and traps of various structures. Safety valves are used for safety protection in case of overpressure of the medium. Various types of safety valves are included.

Many types of valve products are made by purpose (such as chemical, petroleum, power plants, etc.), according to the first point (such as water vapor, air valve, etc.), material (such as cast iron valve, cast steel valve, forged steel valve, etc.), sub (such as internal thread, flange, valve, etc.), connection point (such as cryogenic valve, high temperature valve, etc.), according to the temperature form.

Valve category is the meaning of classification.

Gate valves, ball race valves, butterfly valves, etc.

The valve is a control component in the fluid transportation system, which has the functions of shut-off, regulation, diversion, prevention of backflow, stabilizing the pressure of the ear, 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.

According to the material, the valve is also divided into cast iron valve, cast steel valve, stainless leather Zhenggang valve, chromium-molybdenum steel valve, chromium-molybdenum vanadium steel valve, duplex steel valve, plastic valve Burning Song door, non-standard customized and other valve materials.

The control of the valve can adopt a variety of transmission modes, such as manual, electric, hydraulic, pneumatic, turbine, electromagnetic, electro-hydraulic, electro-hydraulic, pneumatic, spur gear, bevel gear drive, etc., can be under the action of pressure, temperature or other forms of sensing signals, according to the predetermined requirements of action, or do not rely on the sensing signal and simply open or close, the valve relies on the drive or automatic mechanism to make the opening and closing parts lift, slide, swing or rotary movement, so as to change the size of its flow channel area to achieve its control function.

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 are the top ten domestic first-line valve brand manufacturers in 2022-2023, but for reference only: Suzhou Neway Valve Co., Ltd., Shanghai Guanlong Valve Machinery, Shanghai Qizhong Valve Manufacturing Co., Ltd., 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's worth noting that market and industry developments are changing 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.

Valves are classified by pressure

1.Vacuum valves—valves that are hungry for operating pressures below standard barometers.

2.Low-pressure valves—valves with nominal pressure pn less than.

3.Medium Pressure Valve – A valve with a nominal pressure of PN.

4.High-pressure valve – a valve with nominal pressure.

5.Ultra-high pressure valve - valve with nominal pressure pn greater than 100MPa.

Nominal pressure PN: A reference value related to the pressure resistance of piping system components, for ease of use, the priority number of the R10 series is usually taken. The nominal pressure refers to the working pressure of the pipe at the secondary temperature (20).

If the water temperature is between 25 and 45, the working pressure should be corrected according to different temperature drop coefficients. Mausoleum.