液压安全阀安装在油罐顶部，与呼吸阀并列使用，在呼吸阀失灵时起安全作用。
Hydraulic safety valve series shall be installed on the top the center of the tank, in order to withstand the damage to the tanks caused by operating failure of breather valve.
液压安全阀安装在油罐顶部，与呼吸阀并列使用，在呼吸阀失灵时起安全作用。
Hydraulic safety valve series shall be installed on the top the center of the tank, in order to withstand the damage to the tanks caused by operating failure of breather valve.
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