As a kind of automatic valve, are opened and closed automatically by the flow force of media in pipelines. Their main function is to prevent the medium from running back, the pump and its driving motor from reversing, as well as the medium in the container from releasing. The working characteristic of check valves is that the load changes greatly, with the frequency of opening and closing being small. Once they're closed and opened, the service cycle will be very long.
Check valves should be installed on equipment, fittings and pipelines to stop media from being in a direction contrary to the current. Check valves are generally suitable for clean media instead of applying to media containing solid particles and great viscosity. And they are also widely used in petroleum, chemical, liquefied gas, boiler steam system, minerals, food, pharmaceutical, power generation, urban construction, municipal, and other fields, greatly improving the comprehensive use of energy efficiency.
There are many types of check valves designed and manufactured by MED, such as lift check valves, swing check valves, wafer check valves, tilting disc check valves, etc.
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