Butterfly valve operation is similar to that of a ball valve, which allows for quick shut off. Butterfly valves are popular because they cost less than other valve designs, and are lighter weight so they need less support. The disc is positioned in the center of the pipe. A rod passes through the disc to an actuator on the outside of the valve. Rotating the actuator turns the disc either parallel or perpendicular to the flow.
Unlike a ball valve, butterfly valve's closing mechanism is a disk that rotates.The disc is always present within the flow, therefore it induces a pressure drop, even when open.
Pneumatic high performance double eccentric butterfly valve is further improved on the basis of single eccentric butterfly valve. Pneumatic high performance double eccentric butterfly valve structural feature is that the axis of the valve stem deviates from both the center of the disc and the center of the body.
Pneumatic soft seal centerline butterfly valve has the characteristics of strong function, small size, reliable performance, simple matching and large flow capacity.
The pneumatic hygienic butterfly valve uses standard electronic polishing, and the smooth surface ensures cleanliness, no medium accumulation area, and no potential pollution. Pneumatic hygienic butterfly valves are widely used in process control applications such as food, pharmaceuticals, cosmetics, clean steam, alcohol, beverages, and biochemical industries.
Pneumatic high performance triple eccentric wafer butterfly valve is mainly composed of two parts: triple eccentric wafer butterfly valve body and pneumatic actuator. Pneumatic high performance triple eccentric wafer butterfly valve has a compact structure, small size, reliable operation, good sealing, easy maintenance, convenient installation, strong adaptability, etc. advantage.