In order to ensure reliable sealing of the valve in a variety of temperature and pressure, for different services of the user's working conditions and requirements, we can use a variety of advanced hardening technology for ball and seat, including the supersonic spray, nickel-based spray special surface hardening, carbide spray as well as high strength and high hardness ceramic materials, sealing surface material also has good abrasion resistance, impact resistance performance.
To prevent the valve get stuck at high temperatures: the high temperature conditions due to thermal expansion that caused by the ball against the get stuck, it will make the valve can not open. We use the disc spring or spring-loaded disc spring as the seal structure, the thermal expansion can be absorbed, so to ensure that the valves will not get stuck at a high temperature. It can be flexible and open and close. Due to the bottom of seal ring is contacted the ball tighly by the force of seat spring, so the hand force is very small when the operational torque exceeds the spring preload force.
Excellent sealing properties: As the seal of metal seated ball valve is to use of handmade grinding craft technology until the ball and seat exactly match. Sealing performance is reliable and uses a unique ball lapping process, through the sphere grinding apparatus rotates in different directions in space, the ball surface to achieve the high degree of roundness and finish of the valve sealing performance fully met or exceeded the standard requirements .