Working principle of forged steel check valves
The forged check valve refers to a forged valve that automatically opens and closes the valve flap by means of the flow of the medium itself, and is used to prevent the back flow of the medium, which is also called a one way valve, a non-return valve, a reflux valve, and a back pressure valve. The check valve is an automatic valve whose main function is to prevent back flow of the medium, prevent the pump and drive motor from reversing, and the discharge of the container medium. The check valve can also be used on supply pipelines for an auxiliary system in which the pressure may rise and exceed the system pressure. The check valve can be mainly divided into a swing type check valve (rotating according to the center of gravity) and a lift check valve (moving along the axis).
Check valves are also known as one way valves, non-return valves, reflux valves, and back pressure valves. This type of valve is automatically opened and closed by the force generated by the flow of the medium itself in the pipeline, and is an automatic valve. The check valve is used in the piping system and its main function is to prevent back flow of the medium, prevent the pump and its drive motor from reversing, and avoid the discharge of the medium in the container. The check valve can also be used on pipelines which supply to an auxiliary system where the pressure may rise above the main system pressure. The check valve can be applied to the piping of various media depending on the variety of material. The check valve is installed on the pipeline, which becomes one of the fluid components of the complete pipeline. The valve flap opening and closing process is affected by the transient flow state of the system in which it is located. In turn, the closing characteristics of the valve flap exert an effect on the fluid flow state. The working characteristic of the check valve is that the load changes greatly, the opening and closing frequency is small, and once it is closed or opened, the applicable period is long and the moving parts are not required to move. However, once there is a "switching" requirement, it must be flexible. This requirement is more demanding than that of common mechanical movements. Since the check valve is qualitatively determined for quick closing in most practical applications, the medium is directional in the moment the check valve is closed, and the media rapidly drops from the maximum reverse speed to zero as the valve flap closed. And the pressure rises rapidly, generating a "water hammer" phenomenon that may have a destructive effect on the piping system. For high pressure piping systems in which multiple pumps are used in parallel, the water hammer problem of the check valve is more prominent. A water hammer is a pressure wave in a transient flow in a pressure pipe. It is a hydraulic shock phenomenon in which the pressure rises or falls due to a change in the fluid flow rate in the pressure pipe. The physical causes is the combined effect of fluid incompressibility, fluid motion inertia and pipe elasticity. In order to prevent the water hammer in the pipeline, people have adopted some new structures and new materials in the design of the check valve for many years. While ensuring the applicable performance of the check valve, we have made gratifying progress in minimizing the impact of the water hammer.
Check valves are also known as one way valves, non-return valves, reflux valves, and back pressure valves. This type of valve is automatically opened and closed by the force generated by the flow of the medium itself in the pipeline, and is an automatic valve. The check valve is used in the piping system and its main function is to prevent back flow of the medium, prevent the pump and its drive motor from reversing, and avoid the discharge of the medium in the container. The check valve can also be used on pipelines which supply to an auxiliary system where the pressure may rise above the main system pressure. The check valve can be applied to the piping of various media depending on the variety of material. The check valve is installed on the pipeline, which becomes one of the fluid components of the complete pipeline. The valve flap opening and closing process is affected by the transient flow state of the system in which it is located. In turn, the closing characteristics of the valve flap exert an effect on the fluid flow state. The working characteristic of the check valve is that the load changes greatly, the opening and closing frequency is small, and once it is closed or opened, the applicable period is long and the moving parts are not required to move. However, once there is a "switching" requirement, it must be flexible. This requirement is more demanding than that of common mechanical movements. Since the check valve is qualitatively determined for quick closing in most practical applications, the medium is directional in the moment the check valve is closed, and the media rapidly drops from the maximum reverse speed to zero as the valve flap closed. And the pressure rises rapidly, generating a "water hammer" phenomenon that may have a destructive effect on the piping system. For high pressure piping systems in which multiple pumps are used in parallel, the water hammer problem of the check valve is more prominent. A water hammer is a pressure wave in a transient flow in a pressure pipe. It is a hydraulic shock phenomenon in which the pressure rises or falls due to a change in the fluid flow rate in the pressure pipe. The physical causes is the combined effect of fluid incompressibility, fluid motion inertia and pipe elasticity. In order to prevent the water hammer in the pipeline, people have adopted some new structures and new materials in the design of the check valve for many years. While ensuring the applicable performance of the check valve, we have made gratifying progress in minimizing the impact of the water hammer.
