Check valve is a tool used to make fluid flow only in one direction or so there is no reversed flow / back flow. to flow fluid in only one direction and prevent flow in the opposite direction. don't use the handle to adjust the flow, but using the gravity and pressure of the fluid flow itself. Because of its function prevent backflow (backflow) Check Valve is often used as a safety equipment in the piping system
This type of valve application can be found at the outlet / discharge of a centrifugal pump. When the fluid flow rate matches its direction, the flow rate will open the plug or disk. If there is pressure coming from the opposite direction, the plug or disk will close.
