Instructions EF35002 - 08/10
Camflex
®
II 35002 Series Control Valves
D.
Remove indicator (88) by removing the two screws (89).
E.
Loosen handwheel lock (52) and turn handwheel (53) so it
does not interfere with the movement of the lever (34).
Note: On valves supplied with the optional limit stop,
(Figure 17) loosen nut (78) and back off the limit stop
screw (77) so it will not interfere with the movement of
the lever (34).
F.
Connect an air line to the actuator supply port and using
a manual loading panel or regulated air supply, apply
enough air pressure to the actuator so the lever will
move to an intermediate position.
CAUTION
CAUTION
WARNING
DANGER
Do not exceed pressure listed in Figure 14 for actuator
used. Do not use handwheel to move the lever.
Note: If the valve is to be reassembled using the same
orientation, it is recommended that the yoke (33) and
lever (34) alignment, in the closed position, be marked
to simplify reassembly and alignment of the lever and
shaft to ensure proper valve functioning. See Figure 17.
G.
Remove clevis pin clips (5).
H.
Remove clevis pin (7).
I.
Relieve air pressure from actuator enabling clevis (35) to
disengage from lever (34).
Note: If the valve is equipped with a positioner, refer to
the appropriate positioner instruction for procedures on
cam or lever removal. Then proceed to step K.
J.
Remove shaft cover (9) by removing cover screw (10).
CAUTION
CAUTION
WARNING
DANGER
Depending on the size and weight of the actuator. It is
recommended that proper lift and support procedures
be utilized when removing the spring barrel or yoke.
K.
Ensure spring barrel is properly supported.
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.
Loosen 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 dia-
phragm 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 Figures 4 and 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, dis-
assemble the valve using the following procedure:
CAUTION
CAUTION
WARNING
DANGER
Prior to performing maintenance on the valve, isolate the
valve and vent the process pressure.
A.
For 35000 SB (Separable Bonnet) versions, remove
bonnet nuts (104) and lift off bonnet (102) complete with
packing (17) and packing follower (15) from the body as
an assembly. Proceed to step D.
B.
Remove packing follower (15).
C.
Remove safety pin (16).
CAUTION
CAUTION
WARNING
DANGER
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 pressurized. The internal components of the valve
cannot be removed without first removing the safety pin.
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.
5
