美国UE 压力开关，UE差压开关， H100压力开关，J400压力开关，H400压力开关，J402K差压开关，J403压力开关，J402压力开关，J400K差压开关
400系列广泛应用于保护与控制，工业过程装置及泵，气轮机，压缩机，纸桨和造纸,水及污水处理等行业。
电器接口： 1个3/4"NPT，两个7/8"直径的敲出孔
压力接口： 1/4"NPTF:S126B-S164B型，
型：1/2"NPFT；型；1/8"NPT
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