4
2 BW 70 en
The pipeline and medium used must be free of dirt – other-
wise the tightness of the valve may be affected.
It is part of the intended use of the valve that the operating,
mounting and maintenance personnel have read and
understood this IMO manual.
Only qualified personal may perform the installation work.
Metso assumes no liability for structural modifications car-
ried out without explicit consent of the corporation.
Use original spare parts only.
Spare parts should be installed by Metso service personnel.
1.4
Scope of delivery
The series BW valve is available in four versions: lug (monof-
lange), doubleflange, wafer, buttweld.
The valve is normally delivered with the actuator.
1.5
Visual inspection
Before leaving Metso, the valve has been inspected for
tightness and functionality by Metso Quality Control and
set for operation in accordance with the order-related spec-
ifications.
Before installation,
please check the valve for possible
transport damage. If delivery parts are damaged, please
contact Metso service personnel before any further actions.
Before installation,
please check the valve for functionality.
Proceed as follows:
□
Lifting ropes are necessary, depending on the size and
weight of the valve.
Fasten the lifting ropes once around the valve body
twice on the actuator (see Figure 1) for the horizontal
transport position.
For valve sizes with a weight of more than 1t, the valve
and actuator are equipped with lifting lugs to fix the
lifting ropes.
If you fix the ropes on the actuator, the shaft may be
damaged.
Fig. 1
Lifting in horizontal position
Fasten the lifting ropes on the actuator only for a verti-
cal transport position. (see Figure 2)
Fig. 2
Lifting in vertical position
□
Visual inspection – all screws should be tightened cor-
rectly
□
Visual inspection for damage on the following parts:
□
disc
□
shaft
□
actuator and tubing
□
gland packing
□
sealing elements
□
sealing surface of the valve
□
Bring the valve into a vertical position.
The valve may move in an uncontrolled manner during
the check. For this reason, ensure that the valve cannot
move or tilt over under any circumstances.
Normally valid:
View from above on the drive shaft of the disc:
Counterclockwise rotation = OPEN, Clockwise rotation =
CLOSE (see Figure 3).
Fig. 3
Direction of rotation of the actuator and disc position
If the valve does not operate correctly during inspection,
please contact Metso peromnel.
CAUTION:
Danger of twisting!
marking on the driveshaft
open against
clockwise direction
close in clockwise
direction
