10 EB 8222 EN
Mounting
The four feather key notches on the actuator
shaft arranged every 90° allow the rotary
actuator to be mounted on the segmented
ball valve offset at angles of 90° in such a
way that it is either in the upright or horizon-
tal position to meet the installation require-
ments.
Fail-close
1. Completely undo both stop bolts (13.1
and 13.2) on the rotary actuator. Turn
the stop bolt (13.2) clockwise until the
grooves of the actuator shaft are aligned
with the actuator axis horizontally or ver-
tically.
2. Place the segmented ball (8) of the valve
in the CLOSED position (0° angle of ro-
tation).
3. Fasten the yoke (3) to the ange of the
valve shaft using two or four screws (de-
pending on the valve size).
4. Slide the actuator over the valve shaft (4)
and fasten it onto the yoke (3) with four
screws.
5. Undo the stop bolt (13.2) again.
6. Adjust the stop bolt (13.2) to the point
where the valve is completely closed and
align the markings on the shaft and
packing gland.
7. Apply a supply pressure required for the
spring range (see actuator nameplate) to
the loading pressure connection to open
the valve.
8. Turn the stop bolt (13.1) clockwise until
the segmented ball (8) of the valve is in
the OPEN position (90° angle of rota-
tion).
9. Lock the position of both stop bolts with
the lock nuts.
Fail-open
1. Completely undo both stop bolts (13.1
and 13.2) on the rotary actuator. Turn
the stop bolt (13.1) clockwise until the
grooves of the actuator shaft are aligned
with the actuator axis horizontally or ver-
tically.
2. Place the segmented ball (8) of the valve
in the OPEN position (90° angle of rota-
tion).
3. Fasten the yoke (3) to the ange of the
valve shaft using two or four screws (de-
pending on the valve size).
4. Slide the actuator over the valve shaft (4)
and fasten it onto the yoke (3) with four
screws.
5. Undo the stop bolt (13.1) again.
6. Apply a supply pressure required for the
spring range (see actuator nameplate) to
the loading pressure connection to close
the valve.
7. Adjust the stop bolt (13.1) to the point
where the segmented ball is completely
closed and align the markings on the
shaft and packing gland.
8. Disconnect the supply air from loading
pressure connection.
9. Turn the stop bolt (13.2) clockwise until
the segmented ball (8) of the valve is in
the OPEN position (90° angle of rota-
tion).
10. Lock the position of both stop bolts with
the lock nuts.