Spring, One Piece used on 255 Logix 700 series Valves, and all 255 made after 2011
, instead of individual springs used in older models.
This is the newer Logix version, and works with the 700 series of Autotrol 255 valve ( 268 performa uses a LONGER version, pn 1235339 ).
For help with installing, reference this 255 "tear down" Video,
here is where installing spring is shown: = https://youtu.be/GT0TD7NFrek?t=390
Does not work to replace individual springs
used on previous version of the Autotrol Valves.
Does work with new 255 - 400 Series top plates ( for 440, and 460 timers ), made after 2011.