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Contents are subject to change without notice.
SKW/ SKF-2015-09-ENG
6.5.3
Testing and adjusting the valve stroke
Only personnel with appropriate training are allowed to energize the valves. Check and adjust
the valve stroke if you dismantle the valve or assemble a pneumatic or hydraulic actuator.
This is not needed with manual actuators. Refer to the electric actuator documentation for
specific stroke adjustment instructions.
Crush hazard. Keep your hands and feet clear of
moving parts.
1.
Assemble the valve according to the instructions above.
2.
Connect the actuator to power source and stroke the valve to fully OPEN position.
3.
Stroke is adjusted correctly if gate (2) can now be locked with the locking pins (13).
Otherwise continue to the next step for stroke adjustment. See Figure 17.
4.
Measure how much the gate (2) must be adjusted.
5.
Disconnect automatic actuator from power supply to prevent injuries.
6.
Remove retaining ring (17) from the clevis pin (16) and remove the clevis pin.
7.
Push the gate (2) down to get space for the clevis (14) to turn.
8.
Loosen the clevis locking screw (15)
9.
Rotate the clevis (14) on the stem to adjust it up or down according the dimension
measured above.
10.
Re-install the clevis and test if the locking pins (13) fit in now. Repeat adjustment if
pin does not fit in place. Continue to the next chapter if valve is adjusted correctly.
Figure 17.Stroke correctly adjusted.
6.5.4
Final assembly and testing
1.
Stroke the valve with the actuator to fully OPEN and fully CLOSED position to ensure
smooth operation and the correct positioning of the gate.
2.
Install the ring sleeves (4).
3.
Lubricate valve grease nipples (8) as instructed in
Lubrication.
4.
Install all removed safety guards and other accessories according to the
manufacturer’s instructions.
5.
Run a few open/close cycles and leave the valve open. If the valve operates smoothly,
it is ready to be installed on the pipeline. Follow the
Installation
instructions.
DANGER
