GF 546 Manuel D'utilisation page 26

Mounting the Multifunctional Module in the Ball Valve
8
A Stem position for closed ball valve
B Stem position for open ball valve
Note the square (a) and round (b) contours
as well as the position of the asymmetrical
recesses (c) of the stem.
Place the MF module on the ball valve
Make sure the contours of the
multifunctional module and the ball valve
match!
Tighten the four pre-assembled screws.
The MF module is now firmly connected
with the ball valve.
Instruction manual