stvvalves

  duplex stainless steel Ball Valve is a kind of valve that can be opened and closed by rotating the ball around the center line of the valve body. The sealing element is embedded in the valve seat. A spring is set at the end of the metal valve seat. When the sealing surface is worn or burned, the valve seat and the ball are pushed to form a metal seal under the action of the spring. It has the function of automatic pressure relief. When the medium pressure in the valve cavity exceeds the spring preload, the valve seat at the outlet end retreats away from the ball to achieve the effect of automatic pressure relief. After pressure relief, the valve seat automatically resets. It is suitable for water, solvent, acid, natural gas and other general working media, but also for media with poor working conditions, such as oxygen, hydrogen peroxide, methane and ethylene. It is widely used in various industries. Structural features of natural gas worm gear ball valve: China duplex stainless ...