Cycle the valve slowly a couple of times to insure correct
position of the ball between the two seats. The spline
driver should move correctly too.
Tighten the gland nuts (18) with fingers at first and then
with a tool 1.5–2 turns. Check for leakage once the valve
is pressurized and re-tighten the nuts carefully if necessary.
Install the valve in the pipeline as carefully and accurately
as when removing it. Follow the instructions given in
Section 3.
5
TESTING THE VALVE
CAUTION:
Pressure testing should be carried out using equipment con-
forming to the correct pressure class!
We recommend that the valve body be pressure tested after
the valve has been assembled.
The pressure test should be carried out in accordance with an
applicable standard using the pressure rating required by the
pressure class or flange bore of the valve. The valve must be in
an open position during the test.
If you also want to test the tightness of the closure member,
contact the manufacturer.
6
INSTALLING THE ACTUATOR
6.1
General
Different Metso Automation actuators can be mounted using
suitable brackets and couplings. The valve can be actuated by an
M-series handwheel operator or B1-series actuators.
6.2
Installing the M-series handwheel operator
The mark at the end of the stem indicates the direction
of the ball flow bore. Turn the valve to the closed position.
Lubricate the grooves of the actuator and the couplings.
Place the coupling on the stem and lock it. Place the bracket
on the valve and turn the lubricated screws a few times.
Turn the actuator to the closed position and push it
carefully onto the valve stem on which the coupling has
been mounted. Please note the marks on the handwheel
and the coupling.
Lubricate the actuator screws. Tighten all screws.
Adjust the circular movement of the ball with the hexagon
screws located at the side of the housing (see figure 24).
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 handwheel by turning the valve to the extreme
positions. The yellow arrow should indicate the direction
of the ball flow bore.
6.3
Installing the B1C-series actuator
CAUTION:
Beware of ball cutting movement!
Turn the valve to the closed position and drive actuator
piston to the extreme outward position.
File off any burrs and clean the stem bore .
Place the coupling over the stem (see Fig. 23). Note the
correct position. The line at the end of the stem and
coupling indicates the direction of the ball flow bore.
Lubricate the coupling and stem bore. Fasten the bracket
loosely to the valve.
Slip the actuator carefully onto the coupling. Avoid forcing
it since this may damage the ball and seats. We recom-
mend mounting the actuator so that the cylinder is point-
ing upwards.
Position the actuator parallel or vertical to the pipeline as
accurately as possible. Lubricate the actuator mounting
screws and then fasten all screws.
Bracket with ISO
5211 mounting
surface
Coupling
Stem
Fig. 23.
Bracket and coupling mounted on valve
Recommended tightening torques (Nm)
Thread
Stainless steel
Carbon steel
M14
55-63
55-63
M16
114-133
118-140
M20
173-203
184-214
M22
214-251
280-329
M24
310-360
490-580
M30
388-454
626-738
NOTE: Threads must be well lubricated. If studs and nuts are
unlubricated and have been used before, torques must be
about 50% higher.
Table 2.
Recommended tightening torques of the body stud nuts
stop-screw for CLOSED position
stop-screw for OPEN position
Fig. 24.
Open and closed positions of the M-series actuator
11
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