Butterfly butterfly plate installed on the pipe diameter direction. Butterfly simple structure, small size and light weight. Only by a few parts. And just rotate 90 ° to quickly open and close, easy to operate, while the fluid control valve has good features. Butterfly valve in the fully open position Guangdong valve disc thickness is only resistance medium flows through the valve when the pressure generated by the valve drop is small, it has a better flow control characteristics. Test proved positive Chi flow state (medium flow direction and the disc rotates in the same direction), the pressure of the sealing surface of torque and media pressure acting valve actuator plate to produce. Positive medium pressure valve plate oblique cone surface and seat sealing surface squeezed more tightly Shenzhen valve, sealing the better. When countercurrent state seal between the valve plate and seat by the torque drive the valve plate is pressed against the valve seat. With the increase between Foshan valves, valve plate and seat unit reverse media pressure when positive pressure is less than medium pressure, deformation energy compensation valve spring plate adjustment ring after being saved by the carrier and seat sealing surface tight pressure to play the role of automatic compensation. Therefore, this utility model, unlike existing technologies, as install software and hardware multi-ring in the valve plate, but directly mounted on the body, in the middle seat plate and an additional adjustment ring is a very good two-way sealed hard way . It can replace the valve, the valve and ball valve. Guangzhou valves, valve out of Hong Kong (certified), the valve is provided by Valve Co., Ltd., Dongguan Ming Hong Kong. Port Valve Co., Ltd., Dongguan Ming (www.gdmgfm.com) is Dongguan, butterfly leaders, over the years, the company implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. In the next port of the valve leading the staff warmly welcome all inquiries negotiations to create the next port of the valve a better future.