If the throttle valve in a significant reduction in the state, the valve plate on the back prone to cavitation, there is the possibility of damage to the valve gate valve, generally used in the 15 ° outside. When the valve is in the opening, the opening shape of the front end of the body and disc formed in the valve shaft as the center, forming a complete worm gear on both sides of a different state butterfly, the butterfly plate along the flow direction of the front side of the wings, the other side of the counter-current water direction and move, and therefore the electric stainless steel flange valve, forming one side of the body and the valve plate-like shape of the nozzle opening, similar to the other side of the orifice-shaped openings, fast nozzle orifice side than the side of the flow rate, and the throttle valve side the following will produce negative pressure, often have rubber seals off. Valve operating torque, vary the opening of the valve opening and closing direction and its value varies, horizontal flange steel electric butterfly valve, especially large-diameter valve, torque due to water depth, valve shaft, the water head difference can not be generated ignored. Also stainless steel flange valve, the valve inlet side of device elbow, forming bias, torque will be increased. When the valve opening in the middle, because the water flow torque to work, organizations need to operate self-locking. 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, the 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. Electric flange steel gate valve | Ming Port Valve | Leizhou gate valve provided by the Hong Kong Science and Technology Co., Ltd., Dongguan Ming. 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.