保持试验压力的持续时间
|
阀门的公称通径 |
壳体试验试验压力 |
密封试验试验压力 |
上密封试验试验压力 |
|
50~100 |
2 |
2 |
2 |
|
150~250 |
5 |
5 |
5 |
|
300~450 |
15 |
||
|
≥500 |
30 |
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