保持安全工作压力。
采用双机械密封，安全无泄漏，可承受更高的工作压力。
Double mechanical seal, No leakage, Can bear higher working pressure.
安全阀的工作压力须按规定整定。
The working pressure of safety valve should be set as per the applicable Standards.
安全阀的工作压力须按规定整定。
The working pressure of safety valve should be set as per the applicable Standards.
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