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Valve flow characteristic curve and classification
The flow characteristic of the valve is the relationship between the relative flow of the medium flowing through the regulating valve and its opening under the condition that the pressure difference between the two ends of the valve remains constant. Flow characteristic is an important technical index and parameter of regulating valve. It is very […]
installation principle and setting of the bypass valve
Whether the valve needs to be installed with the principle and setting of the bypass valve. We occasionally see relatively large valves in some pipelines and always install bypass valves. Why is this? What is its main function? Under what circumstances does it need to be installed? And what is the size of the bypass […]
The difference of cryogenic valve and ordinary temperature valve
Cryogenic valves, as the name implies, are valves that can work in cryogenic and cryogenic conditions. The operating temperature is demarcated. Valves with operating temperatures below -40°C are usually called cryogenic valves, which are mainly used for gas liquefaction, For separation, transportation and storage equipment, the operating temperature can reach below -270℃. Currently, there are […]
Valve installation instructions and process precautions
Valve is a kind of mechanical product that is widely used in the construction of national economy. In the current market, the more commonly used valve types are butterfly valves, check valves, ball valves, globe valves, gate valves and regulating valves. For the correct installation method of the valve, the user should understand the following […]
Commonly used valve body material code description
Valve body material code description: The material of the valve body should first consider the physical properties (temperature, pressure) and chemical properties (corrosiveness) of the working medium. At the same time, you should also understand the cleanliness of the medium (with or without solid particles). In addition, it is necessary to refer to the relevant […]
Code of valve sealing or lining material
The sealing surface of the valve mainly refers to the contact surface of the valve disc and the valve seat. The sealing element plays the role of cutting off and connecting, adjusting and distributing, separating and mixing the medium on the valve passage, and improving the quality and service life of the valve sealing surface. […]
Types and selection of electric valves
Types of electric valves: Electric valves are valves driven by electric energy, mainly composed of electric actuators and various types of valves. Because the electric valve is easy to use and can be operated when the power is turned on, it is the longest-used type of automatic control valve. There are many types of electric […]
Lining material and its application scope of fluorine lined valve
Description of lining material of fluorine-lined valve With the maturity of the fluorine lining process, the varieties of fluorine lining valves are becoming more and more abundant, including fluorine diaphragm valves, fluorine butterfly valves, fluorine ball valves, fluorine check valves, fluorine globe valves, and fluorine filters. The biggest advantage of fluorine-lined valves is to control […]
Classification and selection of fluorine-lined valves
Fluorine-lined valves, anti-corrosion valves, corrosion-resistant special valves Introduction to fluorine-lined valves and corrosion-resistant valves: Fluorine-lined valve, also known as fluorine-lined plastic corrosion-resistant valve, is a method of molding (or inlaying) polytetrafluoroethylene resin and placing it on the inner wall of the valve pressure part or the outer surface of the valve inner part. (The same […]
The difference and selection of electric valve and pneumatic valve
With the progress and continuous reform of the times, my country’s valve products have also been innovated with the change of the times. At present, in the valve market where environmental protection and safety are increasingly demanded, the use of automatic control devices such as electric valves and pneumatic valves is gradually becoming impossible Optional. […]