Instruction No EF 5000 E
01/2004
7
L.
Loosen and remove cap screws (36) and
lockwashers (37), then remove spring
barrel (38).
M.
Loosen lever capscrew (49).
N.
Loosen the stud nuts (94) and disengage the
packing flange.
O.
Loose the stud nuts (27) to separate the actuator
from the body S/A.
Note: With body secure, grasp lever and yoke and
separate. Yoke, lever and packing flange are
removed at the same time. The yoke may have to be
struck with a soft face mallet to break it loose.
8.2
ACTUATOR COMPLETE
DISASSEMBLY
The spring diaphragm actuator used on the
Camflex® II valve was designed basically as a low
cost non-replaceable item and therefore
disassembly is not recommended. However, in
some instances and for emergency purposes,
disassembly may be required. Proceed as follows.
A.
If the actuator is not removed from the body
proceed to the paragraph 9.1 A. to 9.1 L.
B.
Loosen locknut (46) then remove the clevis (35)
and the locknut (46).
C.
Loosen and remove capscrew (41) and remove
diaphragm case (42) and diaphragm (40).
D.
Using a deep socket, loosen and remove locknut
(45) and washer (44).
E.
Remove piston (43) and spring (39) and inspect
all components.
F.
Proceed to section 10.2 for reassembly.
8.3
VALVE BODY
(Refer to fig. 4 & 16)
Maintenance to the internal components required on
the Camflex® II Valve can normally be easily
determined since the seat ring and plug can be seen
once the valve is removed from the line. Although it
may be determined that the seat ring does not need
replacement, it must be noted that the new plug and
seat ring must be lapped thus requiring the
disassembly of the body. It is recommended that
both seat ring and plug be replaced if one or the
other is damaged due to service.
After the actuator has been removed from the body,
disassemble the valve using the following
procedure:
A.
In case of 35000 SB (Separable Bonnet) before
continuing in D it is necessary to loose and
remove the nut 104 to separate the bonnet with
the packing and the packing follower (15) from
the body.
B.
Remove packing follower (15).
C.
Remove safety pin (16).
D.
Pull on the shaft (19) to remove it.
Note: Difficulty is sometimes encountered when
removing the shaft from the plug mainly due to
an excessive accumulation of deposits between
the plug splines and the shaft. Application of heat
to the plug shaft bore while using one of the
following methods will facilitate removal.
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).
Caution: Prior to performing maintenance on
the valve, isolate the valve, vent the process
pressure.
Caution: The purpose of the safety pin is to
prevent the shaft from being pushed out if the
yoke is removed while the valve is still
pressurised. The internal components of the
valve cannot be removed without first
removing the safety pin.
Caution: When using heating devices. Insure
that proper safety practices are observed.
Such items as the flammability and toxicity of
the controlled substance must be considered
and proper precautions taken.
