OLGAS-H
– High pressure spring return hydraulic actuator
Use and maintenance manual
© Copyright by BIFFI Italia. All right reserved.
Pag. 11
Contents may change without notice
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
Figure 3
– Insert bush + intermediate coupling flange
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.
