Installation of a Flanged Ball Valve Preparation Before Ball Valve Installation The upstream and downstream pipelines should be coaxial, and the sealing surfaces of the two flanges should be parallel. The pipeline should be able to withstand the weight of the ball valve; otherwise, appropriate supports must be provided on the pipeline. Clean the pipelines […]

Gate Valve Definition and Terminology Gate Valve Definition: A gate valve is a valve that opens and closes by moving its gate perpendicular to the direction of media flow (channel axis). Among various types of valves, the gate valve is the most widely used. Gate valves are mainly used in pipelines to cut off the […]

The sealing performance of a valve directly affects the control effect of the fluid medium and the safe operation of the system. Grinding the valve sealing surface is one of the important means to ensure its sealing performance. Its main purpose is to eliminate unevenness, defects, and particles on the sealing surface, improve the surface […]

Faced with numerous valve classifications and complex operating conditions, selecting the most suitable valves for pipeline systems requires, first, understanding valve characteristics; second, mastering the steps and criteria for valve selection; and third, adhering to the principles for selecting valves used in the petroleum and chemical industry. The principles for selecting valves in the petroleum […]

Valves are control components in fluid transport systems. They can be used in fluid control systems to control the flow of various types of fluids, including air, water, steam, various corrosive media, mud, oil, liquid metals, and radioactive media. Standards for Determining Internal Leakage in Valves The method for determining internal leakage in valves is […]

Check valve refers to a valve whose opening and closing part is a round disc and acts by its own weight and medium pressure to block the backflow of the medium, which belongs to the automatic valve.The motion mode of the valve disc is divided into lifting type and swinging type.Lift Check Valve is similar with […]