9
Installation, Operation and Maintenance Manual
MAN 607 Rev. 6
February 2022
Section 2: Installation
Installation
Figure 10
Insert bush + intermediate coupling flange
Position 2
Position 3
Position 4
Rotate insert-bush 180°
around vertical-standard
position (1)
Rotate insert-bush 180°
around axis A-A, from
position 2
Rotate insert-bush
180° around axis
A-A from position 1
Insert bush turned upside down
Table 1.
The Biffi insert bush with 2 external keys at 45° allows to position the keyway for the valve
every 90°. Consequently, actuator can be mounted in 4 positions at 90° on top of the
valve. For biggest actuator models, the bore of the yoke can be machined according to the
dimensions of valve stem.
Housing
Insert Bush
Drive Sleeve
Snap Ring
Adaptor Flange
N
.4 H
ole
s Fl
an
ge
Insert Bush
N
.8 H
ole
s Fl
an
ge
Drive Sleeve
Flow Line
Standard Position 1
Position 1
Position 3
Position 2
