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Use performance and working principle of vertical check valve
Use performance of vertical check valve: This valve is used as a device to prevent the backflow of the medium on industrial pipelines. Performance specifications: Test pressure: nominal pressure (MPa) 1.6 / 2.5 / 4.0; 150Lb-900Lb Shell test: 2.4/ 3.8 / 6.0; psig425-psig3250 Seal test: 1.8 /2.8/ 4.4; psig300-psig2400 Body material: WCB(C) /CF8(P) /CF 8M […]
What is vertical check valve
Vertical check valve: Due to the pressure of the medium at the inlet end of the pipeline, the valve can be opened or closed by overcoming the spring resistance. When the medium pressure at the inlet end is lower than that at the outlet end, the spring pushes the valve core to the valve seat […]
Stainless steel vertical check valve
Overview of Stainless steel vertical check valve: H42W stainless steel flanged vertical check valve is a valve whose disc slides along the center line of the valve body. Pipeline vertical check valve is a new type of valve. It has the characteristics of simple structure, few parts, light weight, and good manufacturability. It is one […]
Industry development prospects of check valve
China’s check valve industry chain is numerous, but it is not a powerful valve country. Generally speaking, my country has entered the ranks of the world’s valve powers, but in terms of product quality, there is still a long gap between my country and the valve powers. The industry’s low concentration of production, low R&D […]
Troubleshooting of check valve
Troubleshooting of check valve: 1. The disc is broken The reasons that cause the valve disc to break are: The pressure of the medium before and after the check valve is close to balance and they are “see-saw” each other. The valve disc often beats against the valve seat, and the disc made of some […]
Selection criteria for check valves
Selection criteria for check valve: The selection criteria for check valves are as follows: 1. In order to prevent the medium from flowing back, check valves should be installed on equipment, devices and pipelines; 2. Check valves are generally suitable for clean media, not for media containing solid particles and high viscosity; 3. Generally, horizontal […]
Process design of check valve
Process design of check valve: (1) The quality control of the main body blank. All parts of this valve are forgings. The forging process is carried out in strict accordance with the forging process regulations and process cards. The initial forging temperature, final forging temperature, deformation degree and deformation speed are strictly controlled, and the […]
Installation method and precautions of check valve
Check valve installation method: 1. Swing check valve: The disc of the swing check valve is disc-shaped and rotates around the shaft of the valve seat passage. Because the inner passage of the valve is streamlined, the flow resistance is smaller than that of the lift check valve. It is suitable for large-caliber occasions where […]
Classification of check valves
Classification of check valves: The check valve that opens or closes by the force of the medium flow to prevent the medium from flowing back is called a check valve. Check valves belong to the category of automatic valves, which are mainly used in pipelines where the medium flows in one direction, and only allow […]
Check valve and its working principle
What is check valve? Check valve refers to a valve whose opening and closing parts are circular discs and rely on its own weight and medium pressure to generate actions to block the back flow of the medium. It is an automatic valve, also called check valve, one-way valve, return valve or isolation valve. The […]