Introduction to the types of valves Can you see the difference between them?

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.

Butterfly valves, gate valves, check valves, ball valves, globe valves.

The valve is a pipeline accessory, which is used to open and close the pipeline and control the flow of fluid medium in the pipeline. The functions of the valve in the pipeline include shut-off, regulation, diversion, backflow prevention, pressure stabilization, diversion or overflow pressure relief, etc. There are many types of valves, as the control components of fluid control systems, from the simplest butterfly valves, gate valves and other commonly used valves to the most complex automatic control system used in various valves, varieties and specifications are very large.

Butterfly valve, also known as flap valve, is a simple structure, easy to use of the control valve, the butterfly plate in the valve body of the butterfly valve is the closing part of the valve, in the shape of a disc, the working principle is that the butterfly plate rotates around the valve shaft to realize the opening and closing of the valve, under normal circumstances, the butterfly plate is driven by the valve stem, rotates 90 °, can complete a opening and closing, to achieve the purpose of interception. If the deflection angle of the butterfly plate is changed, it can also be used as a flow control. Normally, butterfly valves are often used for on/off control of low-pressure pipeline media.

<> are classified by use and role.

Cut-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.

Classified by main parameters.

a) Classification by pressure Vacuum valve Valves whose working pressure is lower than the standard atmospheric pressure. Low pressure valve A valve whose nominal pressure pn is less than. Medium Pressure Valve A valve with a nominal pressure of pn.

High Pressure Valve A valve with nominal pressure. Ultra-high pressure valve A valve with a nominal pressure pn greater than 100MPa. (2) Classification according to the temperature of the medium High temperature valve T valve greater than 450C.

Medium temperature valves 120 C less than t less than 450 C valves. Normal temperature valves -40 C less than t less than 120 C valves. Cryogenic valves -100 C less than t less than -40 C valves.

Cryogenic valves T Valves less than -100 C. (3) Classification of valves made of non-metallic materials according to the material of the valve body: such as ceramic valves, FRP valves, and plastic valves.

Metal material valves: such as copper alloy valves, aluminum alloy peib valves, lead alloy valves, titanium alloy valves, Monel alloy valves, cast iron valves, carbon steel valves, cast steel valves, low alloy steel valves, high alloy steel valves. Metal Body Lined Valves:

Such as lead-lined valves, plastic-lined valves, and enamel-lined valves.

Common Taxonomy.

This classification method is divided according to principle, function and structure, and is the most commonly used classification method at home and abroad. Generally, it is divided into passenger gate valves, globe valves, throttle valves, instrument valves, plunger valves, diaphragm valves, plug valves, ball valves, butterfly valves, check valves, pressure reducing valves, safety valves, trap valves, regulating valves, foot valves, filters, ballast spike sewage valves, etc.