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品牌：
型号：A21H-16C
规格：弹簧微启式
单价：
详细说明
A21H型适用于工作温度≤200oC的空气、氨、石油气……等介质的设备或管路上。
A21W型适用于温度≤200oC有腐蚀性的气体或液体的设备或管路上。作为超压保护装置。
A21H/X（F）型适用于温度≤100oC的液化石油气等.
A21H type safety valves are used for the equipment and pipelines of air and ammonia petroleum gas with working temperature lower than 200°C.
A21W type safety valves are used for the equipment and pipelines of corrosive gas and liquid medium with working temperature lower than 200°C. They have extra pressure protection devices.
A21H/X(F) safety valves are used for liquefied petroleum gas with working temperature lower than 100°C.
