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What are the main factors affecting the sealing performance of butterfly valves?
Sealing is to prevent leakage, and the principle of valve sealing is also studied from leakage prevention. There are many factors that affect the sealing performance of butterfly valves, mainly including the following: 1. Sealing structure Under the change of temperature or sealing force, the str...Read more -
History of the Development of China’s Valve Industry (2)
The initial stage of the valve industry (1949-1959) 01Organize to serve the recovery of the national economy The period from 1949 to 1952 was the period of my country’s national economic recovery. Due to the needs of economic construction, the country urgently needs a large number of valves...Read more -
History of the Development of China’s Valve Industry (1)
Overview Valve is an important product in general machinery. It is installed on various pipes or devices to control the flow of medium by changing the channel area in the valve. Its functions are: connect or cut off the medium, prevent the medium from flowing back, adjust the parameters such as m...Read more -
Why do stainless steel valves also rust?
People usually think that the valve of stainless steel and will not rust. If it does, it may be a problem with the steel. This is a one-sided misconception about the lack of understanding of stainless steel, which can also rust under certain conditions. Stainless steel has the ability to resist a...Read more -
Application of butterfly valve and gate valve under different working conditions
Gate valve and butterfly valve both play the role of switching and regulating flow in pipeline use. Of course, there is still a method in the selection process of butterfly valve and gate valve. In order to reduce the depth of soil covering of the pipeline in the water supply network, generally l...Read more -
What are the differences and functions of single eccentric, double eccentric and triple eccentric butterfly valve
Single eccentric butterfly valve In order to solve the extrusion problem between the disc and the valve seat of the concentric butterfly valve, the single eccentric butterfly valve is produced. Disperse and reduce the excessive extrusion of the upper and lower ends of the butterfly plate and the ...Read more -
Market size and pattern analysis of China’s control valve industry in 2021
Overview The control valve is a control component in the fluid conveying system, which has the functions of cut-off, regulation, diversion, prevention of backflow, voltage stabilization, diversion or overflow and pressure relief. Industrial control valves are mainly used in process control in ind...Read more -
Check valve working principle, classification and installation precautions
How check valve works The check valve is used in the pipeline system, and its main function is to prevent the backflow of the medium, the reverse rotation of the pump and its driving motor, and the discharge of the medium in the container. Check valves may also be used on lines supplying auxiliar...Read more -
Y-strainer installation method and instruction manual
1.The filter principle Y-strainer is an indispensable filter device in the pipeline system for conveying fluid medium. Y-strainers are usually installed at the inlet of pressure reducing valve, pressure relief valve, stop valve (such as the water inlet end of indoor heating pipeline) or other equ...Read more -
Common fault analysis and structural improvement of Dual plate wafer check valve
1. In practical engineering applications, the damage of Dual plate wafer check valves is caused by many reasons. (1) Under the impact force of the medium, the contact area between the connecting part and the positioning rod is too small, resulting in stress concentration per unit area, and the Du...Read more -
The development status of China’s valve industry
Recently, the Organisation for Economic Co-operation and Development (OECD) released its latest mid-term economic outlook report. The report expects global GDP growth to be 5.8% in 2021, compared with an earlier forecast of 5.6%. The report also predicts that among G20 member economies, ChinaR...Read more -
The basis for choosing the butterfly valve electric actuator
A. Operating torque The operating torque is the most important parameter for selecting the butterfly valve electric actuator. The output torque of the electric actuator should be 1.2~1.5 times the maximum operating torque of the butterfly valve. B. Operating thrust There are two main struc...Read more
