Flowserve BX2001 Durco - Manual (Page 27)

DURCO BX2001 USER INSTRUCTIONS ENGLISH 9-13
27
SECTION X
LOCKING LEVER HANDLE AND INDICATOR PLATE INSTALLATION
(See FIGURE 7 below.)
1. Close the valve. The flats on top of the stem should be
parallel with the valve flange face. (Refer to FIGURE 7.)
Note: At this time, adjustments should be made to
ensure that the valve body’s machined flanged surface
(5) is parallel with the disc. To accomplish this, place the
valve body’s machined flanged surface (5) on a level
plate. Position a bubble level on the upper side of the
shaft flat and adjust the shaft until completely level.
2. Place bracket (6) on the valve body as shown in FIGURE
7. Attach using the bracket fasteners (7), lock washers
and hex fasteners. Secure hex fasteners finger-tight.
3. Mount the indicator plate (1) to the bracket (6) as shown
in FIGURE 7 with the shakeproof washers placed between
the indicator plate (1) and the bracket (6). The indicator
plate fasteners (4) should be finger-tight at this time.
4. Place the locking lever handle (2) on the valve stem as
shown in FIGURE 7 and tighten the pinch fastener (3)
provided.
5. Position the indicator plate (1) so that the locking lever
fits in the “closed” position of the indicator plate (1).
Tighten the indicator plate fasteners (4) and the bracket
fasteners (7). (Be sure that the lever cannot be moved
with a 5 / 16 padlock installed in locking hole.)
6. Cycle the valve from closed to open, to closed again,
using the locking lever handle. Recheck to make sure the
disc is centered on the seat by measuring the distance
from the machined surface on the disc to the machined
flanged surface (6) on the body. This should be done at
two points, one above or below the disc over travel stop
and the other 180 degrees from the first. Both measure-
ments should be equal.
SECTION XI
CHANGING LOCKING LEVER HANDLE QUADRANTS
Do not attempt to change locking lever handle quadrants while
the valve is in service.
1. Close the valve. The flats on top of the stem should be
parallel with the valve flange face. Depressurize system
if valve is installed as valve could open when the locking
lever handle is removed.
2. Remove the locking lever handle (2) and indicator
plate (1).
3. Mount the indicator plate (1) 180 degrees from the
position shown in FIGURE 7. Do not tighten the indicator
plate fasteners (4) at this time.
4. Follow Steps 4 and 5 in the Locking Lever Handle and
Indicator Plate Installation Instructions above.
FIGURE 7
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