Used on new-style Water Soft Isobar 1 softener valve.  Also Compatible with newer Cygna mechanical softener valves.  Complete assembly includes all parts shown in fig. 25, excluding #19.  Assembly comes standard with white injector and 2.0 gpm DLFC button. Please note that the male drain line flow control housing shown in #18 has been replaced with a female threaded version. 

All parts can also be purchased individually by selecting that item number in the drop-down menu.