"Old Style" Injector Cap. Comes with new oring. Used on all Autotrol valves 155 which were made up until 1996.
And all Autotrol 163,168,and 169 which were made up until 2000.
Newest PN = 1032974

Very Old versions where white, blue, or red in color.
Used in Autotrol models 150, 1550-TC, 155, 160, 163, 168.
This cap replaces 8F-AA, 8F-BB, 8F-CC, and 8F-DD.