16
Ø
d
1
max
Ø
d
4
h
2
Ø
d
2
+0.1
0
Ø
d
3
±0.2
h
1
+0.5 0
H m
ax
Ø
d
5
+0.2
+0.1
K
+0.4
0
W
D10
50
800
315
698
M36
24
10
32
430
240
56
264.8
60
840
315
698
M36
24
10
32
430
240
56
264.8
September 2020
Installation, Operation and Maintenance Manual
MAN 571_EAC Rev. 1
Installation
Section 2: Installation
Dimensions in millimeters
Actuator model
Ø d
1
Ø d
2
Ø d
3
Ø d
4
N
h
1
h
2
H max
Ø d
5
W
K
Figure 15
Drive sleeve
N. THREADED HOLES
Flange sizing according to ISO
Top view of the scotch yoke mechanism
(actuator shown in closed position)
Flow line
Table 3.
If required, for the standard models size 0.3 to 6, Biffi can supply an insert bush with
un-machined bore in accordance with Biffi standard table SCN6202 enclosed (see following
pages). On request the insert bush bore can be machined by Biffi to couple the valve stem.
The particular execution of the flange and bushing allow the actuator to be rotated by 90°
in 4 different positions according to the Figure 16.
