How to select ball valves, operating conditions for hard seals, selection of materials for soft seals at different temperatures and pressures
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How to select ball valves, operating conditions for hard seals, selection of materials for soft seals at different temperatures and pressures – experts, please help answer these questions. Reference materials on this topic would be great, thank you
Rigid seals are mainly designed for wear resistance, while soft seals offer better sealing performance and are relatively cheaper
What is the maximum operating temperature for soft-seal valves, and what material is used? What is the maximum operating temperature for PPL valve seats? I’ve looked up a lot of information, but the figures vary; thank you
It mainly depends on the medium, the presence of impurities, the leakage level, and the frequency of operation. . . . . If you make your requirements known to large valve manufacturers, they will naturally select the appropriate models for you, and the specifications for these selections are clearly listed in the selection documents.
Hard-sealed high-temperature ball valves are most prone to the problem of the valve core getting stuck. If the temperature remains below 300 degrees for an extended period, it is recommended to use ball valves with soft-sealing materials
The maximum operating temperature for PPL is 220 degrees; depending on the medium pressure, operating temperature, and type of medium, refer to the valve selection manual for guidance