3900系列是双活塞工业用控制阀，比较适合用于双罐式大型系统，配成一用一备或同时运行、交替再生。可配合直径为1600mm的软化罐，连续出水量（压降0.1Mpa）为56.81m3/h。外接管径一般为3″。3900技术特性阀体材料                                                        无铅黄铜
进/出口管径                                                    3″流量范围（0.35Mpa进水压力）                         顶装                     侧装
连续出水量（压降0.1Mpa）                              56.81m3/h          56.81m3/h
峰值出水量（压降0.175Mpa）                          73.86m3/h          73.86m3/h
阻力系数 Cv                                                   65                       65
反洗流量（压降0.175Mpa）                             100gpm              100gpm再生：
顺流/逆流                                                        任选一项
程序调节                                                         所有再生步骤时间均可调节
再生时间                                                   164分钟流量计精度 2″                                                0.68-34.09m3/h±5%
                3″