The ball valve of the worm gear, worm ball valve, Q341 ball valves, cast steel ball valve, ball valve (ball valve) was evolved from plug valve, its opening and closing is a sphere, the sphere rotates 90 degrees around the body centerline to achieve a valve open, closed. Ball valve in the pipe is mainly used to cut distribution and change the media flow direction. The ball valve is a new type of valve in recent years has been widely used, it has the following advantages: 
 A. Fluid resistance is small, equal to the drag coefficient with the length of the barrel. 
 Two. Simple structure, small size and light weight. 
 3. Reliable, close the valve sealing surface material widely used plastic, good sealing, has been widely used in the vacuum system. 
 4. Easy to operate, opening and closing rapidly, from fully open to fully closed as long as the rotation of 90 °, to facilitate remote control. 
 5 Easy maintenance, simple valve structure, the seals are generally activities, removal of the replacement is more convenient. 
 6. In the fully open or fully closed, the ball and seat sealing surface and the dielectric isolation, through the media, does not cause erosion of the valve sealing surface. 
 7. Wide scope of application, the path from childhood to a few millimeters to a few meters from the high vacuum to high pressure can be applied. 
 Q341F-16C worm ball valve has been widely used in various sectors of petroleum, chemical, power generation, paper, atomic energy, aviation, rockets, and people's daily lives. 
 Germany strong valve products: cast iron, cast steel, brass, bronze, stainless steel 304, 316 and other material; connection thread, flange, welding, clamps; Transmission: manual, turbo transmission, pneumatic, electric; pressure :1.0-6 .4 Mpa; Nominal by: DN 15-1200; standards: GB GB of HB, the American standard API, ANSI, Japanese JIS, German standard DIN.