以下为句子列表：
英文: The spring-loaded excess-pressure safety valve protects the pump as well as the gearbox from overload which may arise from an erroneously closed sluice valve or alternatively due to a blocked discharge pipe etc.
中文: 弹簧超压安全阀对泵及齿轮箱起着保护作用，使其避免由于出口阀门的误关或管道的堵塞而引起的超载。
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