A42Y-160/320适用于工作温度≤200℃空气、氮氢混合气等介质的设备或管路上。A42Y-160P/320P、A42Y-160R/320R适用于工作温度≤200℃有腐蚀性介质的设备或管路上，作为超压保护装置。

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