Butterfly Check Valve

Butterfly check valve is a circular disc shaped valve with a single petal and double petal valve disc. It is opened and closed by rotating around the valve shaft, mainly used to prevent backflow. The sealing surface can be welded with wear-resistant materials to improve the service life of the seal, or lined with rubber type soft sealing materials to enhance the sealing performance. Butterfly check valve is a valve that opens by pushing the valve disc open under the pressure of fluid passing through it, and closes and seals the valve by relying on the self weight of the valve disc, the spring on the back of the valve disc, and the pressure of the medium backflow. The micro resistance slow closing butterfly check valve produced by Shanghai Meiyanyi Pump Valve is an improved butterfly check valve design specifically designed to reduce water hammer phenomenon. Through the combination of hydraulic cylinder and spring, its speed can be slowed down when the valve disc is closed, thereby reducing the impact of water hammer on pipelines and equipment.