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双联定量齿轮泵
HGP-22A
HGP-22A-F22R
HGP-22A-F33R
HGP-22A-F44R
HGP-22A-F55R
HGP-22A-F66R
HGP-22A-F88R
HGP-22A-F99R
HGP-22A-F1111R
HGP-22A-F1212R
HGP-22A-F22L
HGP-22A-F33L
HGP-22A-F44L
HGP-22A-F55L
HGP-22A-F66L
HGP-22A-F88L
HGP-22A-F99L
HGP-22A-F1111L
HGP-22A-F1212L
HGP-22A-L22R
HGP-22A-L33R
HGP-22A-L44R
HGP-22A-L55R
HGP-22A-L66R
HGP-22A-L88R
HGP-22A-L99R
HGP-22A-L1111R
HGP-22A-L1212R
HGP-22A-L22L
HGP-22A-L33L
HGP-22A-L44L
HGP-22A-L55L
HGP-22A-L66L
HGP-22A-L88L
HGP-22A-L99L
HGP-22A-L1111L
HGP-22A-L1212L
HGP-33A
HGP-33A-F44R
HGP-33A-F66R
HGP-33A-F88R
HGP-33A-F282
HGP-33A-F1111R
HGP-33A-F1313R
HGP-33A-F1414R
HGP-33A-F1717R
HGP-33A-F1919R
HGP-33A-F2323R
HGP-33A-F2525R
HGP-33A-F2828R
HGP-33A-F3030R
主要用作低温致冷剂，与F22组成的制冷系统用于-8～-12℃的低温制冷装置。也用作泡沫塑料的发泡剂,作制冷剂替代R12。名称：R57A，HFC-57中文名称：R57制冷剂分子量:99标准沸点：-46.8℃临界温度:71℃临界压力：3.7MPa（绝压）临界密度：.488g/cm3CAS编号：354-33-6/42-46-2破坏臭氧潜能值（ODP）:变暖系数值（GWP）:3985R717制冷剂R717（氨）制冷剂，氨是中温制冷剂，化学分子式为NH3，沸点温度-33.4℃，凝固点为-77.7℃，临界温度133℃，临界压力11.417MPa。
