обратный клапан-бабочка

A butterfly check valve produced by china check valve factory is a type of check valve that uses a disc-shaped element to control the flow of fluid in a piping system. The disc is mounted on a shaft that pivots on a hinge, and when fluid flows through the wafer check valve dimensions in the desired direction, the disc is moved out of the way to allow the fluid to pass through. When the fluid flow is reversed, the disc is moved back into position by the fluid pressure, предотвращение обратного потока.