Characteristics And Performance Advantages Of Metal Hard Seal Ball Valve

Lined Ball Valve is a metal sealing structure, and the sealing form is metal to metal sealing. Metal hard seal ball valve can be applied to most harsh working conditions. Metal hard seal ball valve has the characteristics of wear resistance, high temperature resistance, good sealing performance, light switch, etc. In order to ensure the reliable sealing of the valve under various temperatures and pressures, according to the different working conditions and requirements of users, a variety of advanced ball and valve seat hardening technologies can be used, including supersonic spraying, nickel-based spray welding, special surface hardening, carbide spray welding, and high-strength and high-hardness ceramic materials. The sealing surface material also has good wear resistance and impact resistance. Prevent the valve from swelling at high temperature: Under high temperature conditions, thermal expansion can easily cause the ball and valve seat to swell, resulting in the valve being unable to open. The metal hard-sealed ball valve adopts a sealing structure loaded by a disc spring or a spring. The thermal expansion of the parts at high temperatures can be absorbed by the disc spring or the spring, so it can ensure that the valve will not be swollen at high temperatures and can be opened and closed flexibly at high temperatures. Since the bottom of the sealing ring of the hard-sealed ball valve uses a spring to hold the sealing ring and the valve core tightly together, the switch is very light when the external force exceeds the preload of the spring. Excellent sealing performance: Since the seal of the hard-sealed ball valve is manually ground, it can only be used until the valve core and the sealing ring are completely matched. Therefore, its sealing performance is reliable. The unique ball grinding process is adopted. Through the rotation of the ball and the grinding device in different directions in space, the surface of the ball reaches a very high roundness and smoothness. The sealing performance of the valve fully meets or exceeds the standard requirements.