Instruction No EF 5000 E
01/2004
8
Note: The spacer tube (20) and upper guide
bushing (21) may remain in the body. They
should be removed. The spacer tube (20) can
only be removed by pulling it out the bonnet end
of the body. The upper guide bushing (21) may
be pushed through the body after removing the
plug or pulled through the bonnet end of the
body. On valves designed for use on slurry or
viscous service, the upper guide bushing has an
inner "O" ring (92) and an outer "O" ring (93) and
the lower guide bushing has inner "O" ring (95)
and outer "O" ring (96) (Refer to figure 4).
F.
Remove the plug (4) through the end of the body
opposite the seat ring.
G.
Remove the lower guide bushing (22).
Note: A groove is provided in the bushing for
prying out the bushing using a screwdriver. If the
bushing will be pried out it should be pried from
two sides to prevent jamming the bushing during
removal. If the bushing does not come out easily,
fill the bushing with grease, insert the shaft (19)
into the valve insuring that the machined portion
of the shaft starts into the lower guide bushing.
Using a soft faced mallet, strike the end of the
shaft lightly until the bushing is pushed out
partially. Remove the shaft and complete
removal of the bushing by prying out using the
groove provided.
8.3.1 Seat Ring Removal (Refer to figure 16)
The following procedures outline the recommended
method for removing the seat ring retainer (3) with
the use of retainer wrenches. Masoneilan
manufactures and has available, for a nominal price,
seat ring retainer wrenches for the Camflex® II, 1"
through 4" sizes. lt is highly recommended that
wrenches be purchased or fabricated to facilitate
removal and reassembly of the seat ring (2) since
SPECIFIC TORQUES MUST BE ACHIEVED to
obtain tight shutoff and insure proper functioning of
the valve.
Figure 5 shows the recommended materials,
thickness and method of construction along with
specific dimensions to facilitate construction.
A.
Secure the valve body in a vise or appropriate
holding device with the seat ring facing up.
B.
Place retainer wrench so it engages retainer
lugs.
C.
Engage the retainer wrench with an impact
wrench or suitable wrench and loosen, then
remove retainer (3) by turning counter-
clockwise.
D.
Lift out seat ring.
Note: In an emergency, drifts may be used to
remove the seat ring retainer. However, two
drifts should be used and placed in the slots 180°
apart and struck simultaneously.
8.3.2 DVD Removal (Refer to figure 16)
In case of Camflex® with the DVD option, model
number 35x3x or 35x4x, the DVD is installed in the
body, it is recommended to use the DVD wrenches to
remove this device (105). Masoneilan manufactures
and has available, for a nominal price, DVD wrenches
for the Camflex® II, 1" through 12" sizes. lt is highly
recommended that wrenches be purchased or
fabricated to facilitate removal and reassembly of the
DVD (105) since SPECIFIC TORQUES MUST BE
ACHIEVED to insure proper clamping of this DVD
plate.
Caution: Do not pry the bushing using the
seat for leverage. If the bushing cannot be
easily removed, proceed to section 8.3.1 and
remove the seat ring retainer and seat ring
then remove the bushing. Place a piece of
soft stock (brass, etc.) between the inner seat
shoulder and prying device to prevent
damage to the seat sealing area of the body.
92
93
21
22
96
95
Figure 4 - Optional “O” ring arrangement
Care must be taken to avoid damage to the
gasket face on the valve body.
A
A
B
WELDED
KEY
STOCK
3/16" STEEL PLATE
A = O.D. Seat Ring Retainer
B = Width of slot in Retainer
C = I.D. of Seat Ring Retainer
WELDED
HEX NUT
C
Figure 5
