Working Principle and Installing Considerations of Butterfly Check Valve

Working Principle and Installing Considerations of Butterfly Check Valve


Butterfly check valve is a kind of automatic valves for water supply and drainage. On the basis of the real-time flow of fluid change in pipe, the valve can open and close disc accordingly, to avoid occurring adverse current. At the same time, the butterfly check valve can also be chosen to the supply pipeline, which is effective and stable. 

Principle: 
According to the different ways of disc movement, butterfly check valve can be classified into swing check valve and lift check valve. Butterfly check valve can only let fluid flows toward single direction and the disc also can only be opened from a direction. When the medium is still, not producing flowing, the disc will bear combined action of spring extrusion and its own gravity and be in a closed state; When the medium of pipeline flows in the right direction, flow medium will generate thrust and open the valve, making the medium flows through the butterfly check valve; When the medium in pipeline occurs reflux phenomenon, the backflow medium will have a reverse thrust on the disc, working with its own weight, at this moment, the disc will tightly fit together with sealing surface , to avoid backflow phenomenon. 

Installation considerations: 
1. When installing the butterfly check valve, people should pay attention to whether the reverse of check valve is in accordance with the flow direction of pipeline. 
2. It is necessary to support and reinforce the butterfly check valve when installation, for butterfly check valve cannot bear its own weight. 
3. Pay attention to the horizontal and vertical installation. 
 
Butterfly check valve manufacturer recommendations´╝Ü 
Dervos valve is a valve company with advanced technology, rich experience in producing the top level of butterfly check valve, which is well-known valve supplier. It is a good choice to select Dervos valve.

Working Principle and Installing Considerations of Butterfly Check Valve