CV500 Valve
Instruction Manual
Form 5302
July 2006
16
Figure 8. Taper and Expansion Pin Removal from
Ball and Drive Shaft
E0575 IL
DRIVE PINS OUT
FROM THIS END
(SMALLER HOLE)
SLASH MARK ON SPLINED
END OF SHAFT
install the pipe plug (key 29). Fill the bearing bore
with a heavy grease and then insert the end of the
shaft back through the valve body and into the
grease-filled bearing. Protect the splined end of the
shaft with, for example, a block of wood; then strike
the protected end. When the shaft is struck, it will act
as a piston, pushing the grease into the bearing
bore. The grease will then force the bearing out of
the bore and farther along the shaft. Soon, the
bearing will be positioned for easy removal.
15.
For 10- and 12-inch sizes,
if the bearing
(key 6) on the follower shaft requires replacement
and cannot be removed by hand, press it out using a
ram with dimensions as given in figure 9. Press the
bearing into the valve body cavity.
16. If used, remove the O-rings (keys 19 and 20)
from the bearings. Also, for 3- through 8-inch sizes,
remove the pipe plug (key 29).
Assembly
Note
Before starting to assemble the valve
components, place the valve body (key
1) on a flat surface with the retainer
(key 5) facing down as shown in figure
10. This orientation of the valve allows
easier installation of the V-notch ball.
1. Thoroughly clean the parts before assembly.
VALVE
SIZE
A MAX.
MIN.
L
mm
Inches
mm
Inches
3
27.8
27.4
1.094
1.078
165
6.50
4
34.1
33.7
1.344
1.328
165
6.50
6
42.1
41.7
1.656
1.641
197
7.75
8
42.1
41.7
1.656
1.641
229
9.00
10
48.4
48.0
1.905
1.890
229
9.00
12
57.8
57.4
2.275
2.260
260
10.25
Figure 9. Ram Dimension for Bearing Removal
A3308 / IL
2. If O-rings (keys 19 and 20) are used, apply a
small amount of lubricant to the O-rings so the
bearings will easily slide into the valve body. Insert
the smaller O-ring (key 20) inside the bearing and
the larger O-ring (key 19) around the outside of the
bearing.
CAUTION
To avoid damage to O-rings resulting
from contact with sharp edges within
the bearing holes, use appropriate
care when installing the O-rings.
3. Slide the bearing for the follower shaft (key 6)
located opposite the packing box and, if used,
O-rings (keys 19 and 20) into the valve body. For 10-
and 12-inch sizes, make certain the groove located
on the outside diameter of the bearing is positioned
towards the bottom flange side of the valve body.
4. Slide the bearing located on the packing box side
(key 6 for 3- through 8-inch sizes and key 42 for 10-
and 12-inch sizes) into the valve body and against
the bearing stop.
5.
For 3- through 8-inch sizes,
inspect the drive
shaft (key 3). Insert the shaft end opposite the
splined end into the packing box and through the
bearing that was previously installed in the packing
