原装海尔统帅热水器零冷水回水器4分双内牙弹簧单向阀加厚止回阀，其他品牌设备通用。

适合海尔机器型号：JSQ31-16M7X(12T)金U1,JSQ32-16V(12T)主机,JSQ32-16CV(12T),JSQ25-13LR3BWU1,JSQ31-16M7X(12T)金U1(JC),JSQ25-13R5BW(12T),JSQ30-16T11(12T)U1,JSQ25-13JR1(12T)U1,JSQ38-20CR7NPU1,JSQ32-M2(12T),JSQ31-16WJS2(12T),JSQ25-13R3BWU1,JSQ46-24CRT11NKU1,JSQ25-13WJS2(12T),JSQ31-16CR6SPU1,JSQ30-16TR1(12T)U1,JSQ31-16CR5SWU1,JSQ26-M2(12T),JSQ30-16LX5(12T)U1,JSQ26-M1(12T),JSQ31-16TR6BDGU1,JSQ25-13CR5SWU1,JSQ31-16R5BW,JSQ30-16RM1BWU1,JSQ38-20CRT8NPVU1,JSQ31-16M6S(12T),JSQ25-13TR1(12T)U1,JSQ38-20CRT11NKU1,JSQ30-16LR3BWU1,JSQ32-M2(12T),JSQ32-16CVSUP,JSQ31-16CRT8NPGU1,JSQ31-16WN3S(12T),JSQ31-16LR5SWU1,JSQ31-16CR7NPU1,JSQ25-13WN3S(12T),JSQ30-16R1BWU1,JSQ32-M1(12T),JSQ31-16CR5SWU1(LP),JSQ30-16JR1(12T)U1,JSQ31-16M7X(12T)银U1,JSQ38-20M7X(12T)棕U1,JSQ31-16WRS(12T)U1,JSQ30-16R3BWU1