Check Valve Principle Check Valve Installation Notes

The check valve is mainly used to prevent the back flow of media in the pipeline. Bottom VALVES and duckbill valves also belong to the category of check valves. It is a valve that automatically stops fluid backflow. The flap of the check valve opens under fluid pressure and fluid flows from the inlet side to the outlet side. When the inlet side pressure is lower than the outlet side, the valve flap automatically closes under the influence of fluid pressure difference, its own gravity and other factors to prevent the fluid from flowing back. So, what is the principle of the check valve ? Let's take a look at it right away.

[Check valve works]

Check valve open refers to rely on the positive flow of the media to open the valve flap, the same way media backflow valve flap and close, the check valve is also known as check valve, check valve, check valve, and back pressure valve. Mostly automatic valves, the main function is to prevent the reverse flow of the media, to prevent the pump and the drive motor reversal and the use of the container media discharge. It is also used as a safety protection in auxiliary systems where the pressure may rise above the system pressure.

[Check Valve Category]

Check valve can be divided into lift type, swing type, butterfly type three. Lifting can be divided into vertical and horizontal two, lifting structure is moving along the axis. Swing type can also be divided into single-valve type, double-valve type and multi-valve type. Swing-type structure is based on the center of gravity rotation. The butterfly structure is a straight flow path. The opening and closing of the check valve is based on the medium flow force to open and close on its own. The check valve is an automatic valve product. The check valve is only allowed to use the medium flowing in one direction to prevent the medium from flowing back. It has a wide range of applications and can be used in large and small sizes, various media, and high-voltage systems in power plants.

The check valve can be divided into different types according to its structure: swing check valve, lift check valve, butterfly check valve, empty check valve, diaphragm check valve, no wear ball check valve , Piping check valves, slow-closing check valves, float-type fluoroplastic check valves, floating ball fluoroplastic Y check valves, high-efficiency silent check valves, flow buffer check valves, and pneumatics Swing check valve for equipment, Swing check valve with pneumatic closing device, Electric slow closing butterfly check valve, Double butterfly plate buffer check valve, Dual plate check valve for gas, Counter clamp Shaped check valve, counter-block type muffler check valve, swing check valve with minimum flow nozzle, internal pressure self-sealing bonnet DC swing check valve.

[Check valve installation should pay attention to the following things top]
1. Do not subject the check valve to weight in the pipeline. The large check valve should be independently supported so that it will not be affected by the pressure generated by the piping system.
2. When installing, pay attention to the direction of the medium flow and the arrow direction of the valve body.
3, lifting vertical valve check valve should be installed in the vertical pipe.
4. Lifting horizontal flap check valves should be installed in horizontal pipes.
Xiao Bian concludes: The above introduced the principle of the check valve , I hope to be helpful to everyone. For more relevant knowledge, please continue to pay attention to this website information platform. Follow-up will present more exciting content for everyone.