Check valve is a valve that automatically opens and closes the valve disc depending on the flow of the medium to prevent the medium from flowing back.
It is also called a non-return valve or a one-way valve.
A check valve is an automatic valve.
Its main function is to prevent the medium from flowing back, to prevent the pump and the drive motor from reversing, and to prevent the container medium from being released.Its commonly used diameters are DN50–DN600
Main Features：
·rubber seated,100% sealing,zero leakage
·easily rubber lined for abrasion resistance
·100%testing before packing and delivery
·100%flow area,full waterway for low head loss
·suitable for Horizontal or vertical installation
·one piece disc,special precision molded EPDM
·internal steel re-enforcement disc for positive closure
·non slam,non-clogging
·do not need counterweight
·lower power consumption due to lower headless
·WRAS approved material for drinking water upon request.
Advantages：
1. Prevent back flow
One of the most significant advantages of a check valve is that it can effectively prevent liquid back flow.
In the process of water treatment, back flow may cause product contamination, equipment damage and even safety hazards.
Installing and using a check valve can prevent contaminated water from flowing back into the clean water source, thereby helping to maintain water quality and ensure the normal operation of the water treatment process.
2. Equipment protection
Check valves protect downstream equipment by preventing back flow.
In a pump system, if the pump stops running suddenly, the check valve installed downstream of the pump will prevent the fluid from flowing back, which may damage the impeller or other parts of the pump. Therefore, it can not only extend the service life of the overall equipment, but also effectively reduce the equipment maintenance cost.
3. System Reliability
The check valve helps improve the overall reliability of the fluid system. Its automatic operation and ability to prevent back flow ensure that the entire equipment system can operate as originally intended under normal and abnormal conditions.
