IMO-227 EN
11
IMO 8/17
4 .9
Testing the Valve
WARNING:
WHEN PRESSURE TESTING, EXERCISE CAUTION AND MAKE SURE
ALL EQUIPMENT USED IS IN GOOD WORKING CONDITION AND
APPROPRIATE FOR THE INTENDED PRESSURE.
If the valve is to be tested prior to returning to service
make sure the test pressures are in accordance with an
applicable standard.
When testing the valve for external tightness, keep the ball
in the half open position.
If testing the valve seat tightness, please contact Metso
for advice.
WARNING:
WHEN PERFORMING ANY TESTS, NEVER EXCEED THE MAXIMUM
OPERATING PRESSURE OR MAXIMUM SHUT-OFF PRESSURE LISTED
ON THE IDENTIFICATION PLATE!
5
HANDLE MOUNTING
1. Stroke the valve to the fully open position.
2. Lower the handle bracket (2) straight down in line with
the valve stem until it is flat on the valve bonnet, and
all four mounting holes align with tapped holes on the
valve (see Figure 12).
NOTE: Positive stop feature on the handle bracket (2)
should be forward, towards the insert.
Figure 12 Handle Assembly
3. Insert the four bracket screws (3) and lock washers (4)
into the mounting holes and thread into the valve until
finger tight only.
4. Aligning the slot in the handle with drive on the stem,
lower handle (1) straight down in line with the valve
stem until it is completely engaged. If the handle (1)
interferes with the handle bracket (2) rotate the han-
dle bracket slightly to remove interference. DO NOT
rotate stem!
NOTE: When looking down at the top of the valve, the cast
lettering and “OPEN” arrow on the handle should be visible.
If they are not visible the handle is installed upside down.
5. Install the handle screw (6) and washer (5). Tighten
handle screw (6) to value listed in Table 5.
6. Confirm ball is in fully open position.
7. Rotate handle bracket (2) until the handle stop con-
tacts the side of the handle (1) (see Figure 13).
Figure 13 Handle Stop
8. Tighten the four bracket screws (3) to the values listed
in Table 5 .
9.
Close, and then open the valve making sure the han-
dle is against the handle bracket stop. Check the ball
to confirm full open position. If the ball is not in the
full open position with the handle against the stop,
loosen the four bracket screws (3) and make any nec-
essary adjustments by rotating the handle bracket.
Retighten the four bracket screws (3) to the values
listed in Table 5.
6
STEM EXTENSION MOUNTING
1. Stroke the valve to the fully open position.
2. Lower the handle stop (2) straight down in line with
the valve stem until it is flat on the valve bonnet, and
both mounting holes align with tapped holes on the
valve (see Figure 14).
NOTE: The stop should be mounted rearward on the
bonnet, between the stem and body pipeline flange. The
curved side should be towards the stem.
3. Insert the stop screws (3) and lock washers (4) into the
mounting holes and thread into the valve until finger
tight only.
4.
Screw threaded rod (5) into tapped hole on top of stem.
5. Aligning the slot in the stem extension (1) with drive
on the stem, lower the stem extension straight down
over the threaded rod (5) and in line with the valve
stem until it is completely engaged. If the stem exten-
2
6
5
1
3
4
HANDLE AGAINST
STOP IN OPEN
POSITION
INSERT SIDE
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