公称压力 PN/MPa Nominal pressure |
试验压力/MPa Seal test | ||
壳体强度试验 Shellslrenght test |
上密封试验 Back Seal test |
密封试验 Seat test | |
2.5 | 3.8 | 2.8 | 2.8 |
4.O | 6.0 | 4.4 | 4.4 |
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