In the50GY Series hard seal trunnion ball valve, the seat surface is subjected to hardeningtreatment, the ball is coated with tungsten carbide and the sealing seat isloaded by the spring. It has excellent sealing performance under a widevarieties of pressures and temperatures, ensuring stable running under hightemperature and high pressure service conditions. The optimized stem designmakes the whole valve maintain the lowest operating torque. The 50GY Seriesvalve is mainly used in severe service conditions such as high temperature,high pressure, strong corrosion and other service conditions with mediacontaining granules .Due to its advantages, the hard seal ball valve is widelyapplied and receives more and more favor from customers.