要特别注意密封材料和衬垫材料，这些材料相当程度上决定了阀门的压力-温度额定值。
Pay especially careful attention to the packing and gasket materials as this may limit the rating as is the case with PTFE used as the standard in Aloyco valves.
最大额定值环境温度范围适用，除非另有说明。
MAXIMUM RATINGS Full operating ambient temperature range applies, unless otherwise noted.
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