局限性

-High cost: High strength materials (such as forged steel and alloys) and precision machining (such as ball/seat grinding) result in significantly higher manufacturing costs than ordinary ball valves.

-Heavy weight: In order to withstand high pressure, the wall thickness of the valve body increases, and the overall weight is 30% to 100% heavier than that of a low-pressure ball valve of the same diameter, requiring higher support strength for the pipeline.

-Difficulty in maintenance: The precision requirements for high-pressure sealing pairs (such as metal hard seals) require professional equipment to re grind during maintenance, and the disassembly and assembly process must strictly control the protection of the sealing surface, otherwise it may lead to seal failure.

In summary, the core advantages of high-pressure ball valves are high-pressure tolerance, reliable sealing, and efficient flow. They are key equipment for cutting off and reversing in high-pressure pipeline systems and are widely used in fields such as petroleum and natural gas, coal chemical industry, power (supercritical units), hydraulic engineering, etc. When selecting, it is necessary to match the material and sealing form according to the specific pressure, temperature, and medium characteristics.