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调压阀是将减压阀输出的中压空气再次减压后输给面罩,此压力稍高于标准大气压,使面罩内始终保持轻微的正压; 瞬时大供气量达500L/MIN; 调压阀体积小,结构简单,操作方便,的操作

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选配新鲜空气阀,用于长时间测量,含所有传感器5倍量程扩展功能。

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