介质为燃气、液态燃气或液体，最高工作压力大于或等于介质的标准沸点。
The medium is gas, liquid gas or liquid which maximum operation temperature is more than or equal to standard boiling point.
波纹管随阀杆的升降而伸缩，其最高工作压力取决于波纹管的耐压强度和疲劳强度。
The corrugated pipe expands and contracts along with valve lever's fluctuation, its highest working pressure is decided by corrugated pipe's pressure resistance intensity and the fatigue strength.
波纹管随阀杆的升降而伸缩，其最高工作压力取决于波纹管的耐压强度和疲劳强度。
The corrugated pipe expands and contracts along with valve lever's fluctuation, its highest working pressure is decided by corrugated pipe's pressure resistance intensity and the fatigue strength.
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