高温安全阀的阐述和管道布置设计的要点

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七、当安全阀进出口管道上设有切断阀时，应选用单闸板闸阀，并铅封开，阀杆应水平安装，以免阀杆和阀板连接的销钉腐蚀或松动时，阀板下滑。当安全阀设有旁路阀时，该阀应铅封关。