Injectors For Autotrol Valves w/Orings ( 26F & 27F ) included.
White AA = 1032970 : Blue BB = 1032971 : Red CC = 1032972 : Green DD = 1030272
White - AA for 7"-8" tanks
Blue - BB for 9"-10" tanks
Red - CC for 12"-14" tanks
Green - DD for 16" softeners, or any size Iron Filters

Your OLD Injector may look more squared off than the ones in our photos. The design ( mold ) was changed several years ago, but they all work the same.

Small end goes in first.
Larger end has the "hole" in sides.
Direction of the side holes does not matter.
Push into place until you feel the small end o-ring "locking" into place.

Removal requires pulling out with needle nose pliers ( sometime requiring excessive force to remove ).