
1 T 70 en 11
6 INSTALLING THE ACTUATOR
6.1 General
Use suitable mounting parts and couplings when you
install the actuators.
6.2 Installing the M-type manual gear
operator
❑The mark at the end of the shaft indicates the
direction of the ball flow bore. Turn the valve to
the closed position.
❑Lubricate the key groove of the actuator and the
couplings. Install the coupling on the shaft and
lock it. Install the bracket(s) on the valve. A plate
should be installed between the valve flange
mounting face or bracket and the actuator
mounting face, see actuator's instructions for
details.
❑Lubricate the actuator screws. Install and tighten
all screws.
❑Adjust the ball fully open and fully closed posi-
tions with the hexagon screws located on both
sides of the housing (see Fig. 23). The stop-
screw for the open position is nearest to the
handwheel on the side of the housing and the
screw for the closed position is at the opposite
end. The turning directions for the handwheel
are marked on the wheel.
❑Check the valve by turning the handwheel to the
extreme positions. The indicator on the top of
actuator shows the direction of the ball flow bore.
6.3 Installing the B1C-series actuator
❑Operate the actuator to the same position as the
valve (fully open or fully closed).
❑File off any burrs and clean the shaft bore .
❑The line at the end of the shaft indicates the
direction of the ball flow bore.
❑Lubricate the actuator shaft bore. Fasten the
bracket loosely to the valve.
❑Slip the actuator carefully onto the valve shaft.
Avoid forcing it since this may damage the ball
and seats. We recommend mounting the actua-
tor so that the cylinder is pointing upwards.
❑Position the actuator parallel or vertical to the
pipeline as accurately as possible. Lubricate the
actuator mounting screws and then fasten all
screws.
❑Adjust the ball open and closed positions by
means of the actuator stop screws located at
both ends (see Fig. 24). An accurate open posi-
tion can be seen in the body flow bore.
Check that the yellow arrow on the actuator indi-
cates the ball flow opening position. Keep fin-
gers out of the flow bore!
There is no need for stop screw adjustment if the
actuator is re-installed in the same valve. Drive
actuator piston to the housing end (open posi-
tion). Turn the actuator by hand until the valve is
in the open position. Fasten the actuator in this
position as explained above.
❑Check the stop screw thread tightness. An O-
ring is used for sealing.
❑Check that the actuator is functioning correctly.
Drive the actuator piston to both cylinder ends and
check the ball position and its movement with
respect to the actuator (close: clockwise; open:
counterclockwise). The valve should be closed
when the piston is in the extreme outward position.
❑If necessary, change the position of the actuator
pointing cover to correctly indicate the valve
open/closed position.
6.4 Installing the B1J-series actuator
Spring-return actuators are used in applications where
valve opening or closing movement is needed in case
the air supply is interrupted. The B1J type is used for
spring-to-close operation; the spring pushes the piston
towards the cylinder end, the extreme outward position.
In turn, the B1JA type is used for spring-to-open opera-
tion; the spring pushes the piston towards the housing.
Spring-return actuators are installed in a manner similar to
B1 C-series actuators, taking into account the following.
6.4.1 B1J-type
❑Install the actuator so that the piston is in the
extreme outward position. The cylinder must not
be pressurized and air supply connections must
be open. The valve must be in the closed posi-
tion.
CAUTION:
Beware of ball cutting movement!
Fig. 23 Open and closed positions of the M actuator
Stop screw for Stop screw for
OPEN position
CLOSED position
Fig. 24 Open and closed positions of the B1C/B1J
actuator
Stop screw for CLOSED position
Stop screw for OPEN position