Q series part-turn valve actuators Q system class part of the rotary valve actuators suppliers Q system class section of the rotary valve Yangzhou-valve power based on the market, focus on the future, quality first, honesty, technology leadership, customer first. Q series part-turn valve actuators Q system class part of the rotary valve actuators suppliers Q system class part of the rotary valve intelligent part of the rotary valve actuators, high-quality speaker repair electric actuators, electric actuators quality, quality-valve electric actuator, quality electric butterfly valve, Yangzhou electric actuators, electric actuators manufacturers, explosion-proof actuators, blue valve electric actuator, specializing in the production of stainless steel electric ball valves, professional stainless steel electric ball valves, stainless steel electric ball Jiangsu, Yang Xiu supply electric actuator, the supply of electric high temperature and pressure welded valve, high-quality stainless steel electric valve, explosion-proof multi-turn valve actuators, multi-turn intelligent electric valve actuators manufacturers, electric welding high temperature and pressure valve factory prices. Electric valve types are: floating ball valve, fixed ball valve, track ball, V-ball valve, ball valve, stainless steel ball valves, forged steel ball valve, ball valve dumping ash, sulfur ball valve, ball valve, electric ball valves, electric ball valves, card sleeve valve, welded ball valve, flanged ball valves, wire port ball valve. Floating Ball: The ball valve is floating in the medium under pressure, the ball can produce a certain displacement and pressed at the outlet end of the sealing surface, ensure the outlet end seal. Simple floating ball valve structure, good sealing, but the ball all bear the load of the working medium to pass the exit seal, so to consider the ring material can withstand the work load of the media sphere, in shock when subjected to high pressure sphere may be shifted. This structure is generally used in low-pressure valve. Fixed Ball: The ball valve is fixed, no movement after compression. Are fixed with a floating ball valve seat after by media pressure, the valve seat to move, so that seals pressed onto the ball, in order to ensure sealing. Usually with the ball, the lower shaft with bearings, operating torque, suitable for high pressure and large diameter valves. In order to reduce operating torque and increased ball reliability of sealing, lubricating oil, to form a layer of film that enhances the seal, but also reduce operating torque, more suitable for large-diameter high-pressure valve. Flexible Ball: The ball valve is elastic. Ball and seat ring are made of metal materials, sealing pressure than large, rely on the media itself has reached less pressure sealing requirements must apply force. This valve is suitable for high temperature and pressure medium. Elastic sphere is the sphere in the lower end of the inner wall of the opening of a resilient groove, and access flexibility. When closing the channel, wedge-shaped head with a stem so that the ball up on and the valve seat seal. Before turning the ball first release wedge-shaped head, the ball followed by restoration of the original prototype, so there is very small gap sealing surface can reduce friction and operating torque between the ball and the valve seat.