3.
INSTALLATION
3.1
General
Remove the flow port protectors and check that the valve
is clean inside. Clean valve if necessary. The machined line
of the top of the stem (5), is a visual indicator of the ball (3)
port position and flow direction.
Figure 2
shows the valve
installed on the tankcar. Line horizontal indicates the closed
position. Line vertical indicates the open position. This
applied to both Standard and FO operation.
Flush the tank car carefully before installing the valve. Foreign
objects, such as sand or pieces of welding electrodes, will
damage the ball and seats.
3.2
Handles
If the valve handle (31) has to be removed for any reason,
the handle must be remounted in the same orientation.
WARNING
FAILURE TO PROPERLY MOUNT THE HANDLE MAY RESULT IN
IMPROPER VALVE OPERATION, DAMAGE OR PERSONAL INJURY.
3.3
Installing on the Tank Car
WARNING
THE VALVE SHOULD BE TIGHTENED ON FLANGES USING
APPROPRIATE GASKETS AND FASTENERS COMPATIBLE WITH THE
APPLICATION, AND IN COMPLIANCE WITH APPLICABLE PIPING
CODES AND STANDARDS. CENTER THE FLANGE GASKETS CAREFULLY
WHEN FITTING THE VALVE ON FLANGES. DO NOT ATTEMPT TO
CORRECT MISALIGNMENT BY MEANS OF FLANGE BOLTING!
Open the valve
The valve may be installed in any position and offers
tightness in both directions. It is recommended; however,
that the valve be installed with the tongue and groove
connection is installed against the tank car.
Refer to the Section 4,
MAINTENANCE
for stem seal
adjustment. If there is weepage past the stem seals upon
installation, it means the valve may have been subject
to wide temperature variations in shipment. Leak-tight
performance will be restored by a simple stem seal
adjustment described in the
MAINTENANCE
section.
3.4
Commissioning
Ensure that there is no dirt or foreign objects left inside the
valve or tank car. Flush the tank car carefully. Make sure that
the valve is fully open when flushing.
Ensure that all nuts, fittings, and cables are properly
fastened.
3.5
Steam jacket connections
The steam-jacketed valve should be firmly attached to
the tank car prior to fitting and welding of steam jacket
connections. See
Section 3.2.
The valve does not need to be disassembled prior to fitting
or welding of steam jacket connections; however the valve
must be in either the fully open or fully closed position.
Carefully fit the steam lines to the valve’s steam jacket
connections. There should be no side loads on the valve’s
steam jacket connections due to misalignment of the steam
line piping.
Welded connections should only be made by ASME, Section
IX qualified welders. Additional AAR welder qualifications
may apply.
An AAR certified welding inspector should inspect the
steam jacket connection welds prior to pressure testing.
Following approval of the welds, pneumatically test the
pressure tightness of the steam jacket connections to the
maximum system steam pressure plus 10%.
DO NOT EXCEED
250 psig (17.2 barg). Cover the welds with a leak detection
fluid and observe for three (3) minutes. Any indication of
leakage is cause for rejection.
Figure 2.
TANK CAR SIDE
Indicates valve in closed position
Indicates valve in open position
IMO
4/19
4
IMO-R20 EN
