What are the characteristics of high temperature ball valves with O-ring seals

     O-ring sealing valve seat is a commonly used valve seat sealing form for high-temperature ball valves, which is suitable for transporting media below 250°C. When a medium passes through the pipeline, a valve seat ring, an O-ring and a spiral spring are used between the valve seat and the valve body to form a metal sealed ball valve device.

     The O-ring of the high-temperature ball valve realizes the seal between the valve body and the seat sealing assembly, and the pre-tightening force of the coil spring pushes the seat ring to contact the sphere, which realizes the sealing of the seat and the sphere, and also realizes the sphere and the valve. The seal between the bodies.

    The O-ring seal seat used in the high temperature ball valve has an automatic pressure relief function, and will not cause abnormal temperature rise due to the instability of the medium in the valve body cavity due to chemical changes or phase changes. The valve has strong safety and is safe at high temperatures. When the ball valve is working, only one side of the valve seat plays a role of sealing, so the operating torque of the valve is relatively small, the design and processing are relatively simple, and the sealing effect is good.