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Valves’ sealing requirements and daily maintenance
The sealing performance of the valve refers to the ability of each sealing part of the valve to prevent the leakage of the medium. It is the most important technical performance index of the valve. There are three sealing parts of the valve: the contact between the opening and closing parts and the two sealing […]
Stainless steel valve material parameters and specific applications
The following are several stainless steel valve material parameters and specific applications: (1) Angle stroke includes ball valve, butterfly valve, plug valve, etc. (2) Straight stroke includes gate valve, globe valve, angle seat valve, etc. This classification method is divided according to the principle, function and structure. It is the most commonly used international and […]
Classification of valves
Valve classification by function and purpose: (1) Cut-off type: such as gate valve, globe valve, plug valve, ball valve, butterfly valve, needle valve, diaphragm valve, etc. The cut-off valve is also called a closed-circuit valve or a cut-off valve, whose function is to connect or cut off the medium in the pipeline. Check valve, also […]
Installation attentions for valves
Precautions for valve installation: Globe valves, throttle valves, pressure reducing valves, check valves and other valves are all directional. If the throttle valve is installed upside down, it will affect the use effect and life. If the pressure reducing valve does not work at all, if it is stopped The return valve can even cause […]
Current status and development of Chinese valves
Domestic status: In terms of technical support for valve production and R&D, domestic valves are not lagging behind foreign valves. On the contrary, many products are comparable to international companies in terms of technology and innovation. The development of the domestic valve industry should move towards high-end modernization. Driven by the four major forces of […]
Valve cleaning steps and assembly requirements
Valve cleaning steps: The valve parts must go through the following processes before assembly: According to the processing requirements, some parts need to be polished, and the surface must not have processing burrs, etc.; All parts are degreased; After degreasing is completed, pickling passivation is carried out, and the cleaning agent does not contain phosphorus; […]
Basic knowledge of valve
A valve is a device used to control the direction, pressure and flow of fluid in a fluid system. A valve is a device that allows the medium (liquid, gas, powder) in the piping and equipment to flow or stop and can control its flow. The valve is a control component in the pipeline fluid […]
What are the accessories for pneumatic valves?
Pneumatic valves have the advantages of fast switching and low price. Correct selection of pneumatic valves requires the use and characteristics of related accessories to achieve stable performance and long service life. In addition to improving the quality of the valve, it is also The matching of accessories is also very important. Here, I will […]
Fasteners, fillers and gasket materials of valves
There are many other valves parts and 1. Fastener material of valves: Fasteners mainly include bolts, studs and nuts. The fastener directly bears the pressure on the valve, which plays an important role in preventing the outflow of the medium. Therefore, the selected material must ensure sufficient strength and impact toughness at the operating temperature. […]
What is the material of Bolts and nuts of Valve Stem?
Bolts and nuts material of valve stem: The stem nut directly bears the axial force of the stem during the opening and closing of the valve, so it must have a certain strength. At the same time, it and the valve stem are threaded transmission, which requires a small friction coefficient, no rust and avoid […]