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You are here: Knowledge Base > Autotrol 155, 255, 268 valves
Options - Rebuilding or Replacing your Autotrol 255/440 Valve
Last Updated: 05/07/2013

The Autotrol 255 Valve Body and Timer Assembly ( 440 ) can be repaired / rebuilt / upgraded, in the following ways.
Please review the LINKS below


255 Rebuilding, Kit, and 440 Timer Repair Guide

255 Diagrams and Parts List

255 Upper Valve Body Replacement without Timer Assembly

460TC is a replacement for 440 timers, and is a little "simpler" to program.
It has improved drive motor, electronic timer, and only 3 drive gears ( old 440 had 8 and 4 that loved to break ).

The Logix 740 is a better design ( all the cycle times are controlled by the electronics ), and since it uses a rear drive motor ( with 1 gear ), it is less likely to fail mechanically.
There is a little more involved to the programming, and requires you know your resin capacity ( amount in cu.ft. ), in the long run, we believe this to be the best replacement timer option.

However, please NOTE: The 740 Logix is only available for use on the 255, 263, or 268 Valve Bodies, and if you have an older 155 or 163, 168, and just need / want to replace your 440 timer, you must use the 460TC or replace the Entire Valve Head ( with newer 255 or Performa 263 / 268 Valve ).
There is no way to use the LOGIX timers with old 155, 163, 168 models.
Review the information on the two ( we have photos, videos, copies of directions, etc ), and you can make an informed decision. Either will work.
see:
460TC timer assembly

and
255 upper valve body with 460TC timer


OR
255 Upper valve body with Logix 740 timer

740 and 760 Logix Timer Programming Instructions

AND The BEST would be the complete metered ( regenerates based on actual demand - water used ) control Logix 760 on a complete new 255 Valve,
see:
Complete Valve Head 255 with 760 Logix Controller
and
Old Valve Replacement Guide / Directions



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