Masoneilan 35002 Series Camflex II Instruction Manual | 6
Copyright 2020 Baker Hughes Company. All rights reserved.
When using heating devices, ensure that proper
safety practices are observed. Such items as
the flammability and toxicity of the controlled
substance must be considered and proper
precautions taken.
If the shaft is not removed easily, replace the lever (34) on
the splined end of the shaft (19), tighten the lever capscrew
(49) and using a mallet, tap the lever (34) as close to the
shaft as possible and remove the shaft (19).
Note: If the shaft cannot be removed by tapping the
tightened lever, Figure 20 illustrates an alternative
method of removal. Using a pipe nipple of suitable
size and length and reversing the packing flange and
stud nuts as shown, the shaft may be jacked out of the
body. For larger valves, the use of an additional washer
and nipple to assist in holding the tightened lever is
recommended. The lever should be tightened at a point
where the hub on the lever is flush with the end of the
spline.
E.
The components which should come out with the shaft (19)
are: the packing (17), packing box ring (23 or 100), spacer
tube (20) and upper guide bushing (21).
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).
92
93
21
22
96
95
Figure 4 - Optional “O” ring arrangement
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.
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.
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. Baker Hughes manufactures and has available, for a
nominal price, seat ring retainer wrenches for the Camflex II, 1"
through 4" (DN 25 through 100) sizes. It 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 ensure proper
functioning of the valve.
Figure 5 shows the recommended materials, thickness and
method of construction along with specific dimensions to
facilitate construction.
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
A.
Secure the valve body in a vise or appropriate holding
device with the seat ring facing up.
Care must be taken to avoid damage to the gasket
face on the valve body.
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 counterclockwise.
Note: The Camflex GR body constructions will require
an extension to reach the retainer, due to the longer
body pattern.
D.
Lift out seat ring.
