Locking Bar For Autotrol 155 & 255
Old PN 34F1 and newer PN 1031402To remove:
While pushing down on the upper valve body, you need to "force" the red locking bar to "slide out".
You can use a screw driver as a "lever", and pry one side, a little, and then the other side.
Slowly working the bar outward, one side at a time, to prevent breaking the bar "legs".
It helps to be pushing down on the Upper Valve Body from the top
and to wiggle it a bit to get it back into the holes of the valve and low adapter.