* NOT for older models 155,1550-TC,163,168, as those used the smaller ( obsolete ) injector cap ( reference 8F-BB
Also, cross reference to part 25D for old 168FA Valve ( used in place of Brine Control Dial ).
Also, Fleck 5810, 5812 list this "blank cap" as a replacement part.
Includes O-ring 1010110 ( AP2F )
Replaces the "A" (1000217 ), "B" ( 1000218 ), "C" ( 1000219 ), or "D" ( 1030303 ) used on some model 255 caps between 1996 - 2006.
Also, the Refill Cap (Part number 1033441) for a Autotrol Performa FA valve ( 268, 263 ).
* The Injector CAPS are no longer marked with a "Letter".
and only had a LETTER ( A,B,C ) on them in the past Backwash Plug and Injector Cap Removal Tool
to let you know ( without removing ) what the injector installed inside was.