Dresser Masoneilan 35002 Camflex II Series User manual

Instruction Manual
EF35002
08/10
35002 Camflex® II Series
Rugged, All-Purpose
Rotary Control Valves
Putting You In Control

Table of Contents Page
SAFETY INFORMATION ......................................................................................................1
ABOUT THIS MANUAL ........................................................................................................1
WARRANTY ..........................................................................................................................1
1. INTRODUCTION ...............................................................................................................2
2. GENERAL ..........................................................................................................................2
3. PRINCIPLE OF OPERATION ...........................................................................................2
4. UNPACKING .....................................................................................................................3
5. INSTALLATION .................................................................................................................3
6. AIR SUPPLY PIPING ........................................................................................................4
7. PLACING IN SERVICE .....................................................................................................4
8. DISASSEMBLY .................................................................................................................4
8.1 ACTUATOR REMOVAL FROM BODY S/A ..............................................................4
8.2 ACTUATOR COMPLETE DISASSEMBLY ...............................................................5
8.3 VALVE BODY .........................................................................................................5
9. MAINTENANCE ................................................................................................................7
9.1 SPRING DIAPHRAGM REPLACEMENT ..................................................................7
9.2 BODY S/A INTERNAL PARTS ................................................................................8
9.3 YOKE ASSEMBLY ..................................................................................................9
10. REASSEMBLY PROCEDURES ......................................................................................9
10.1 SPRING DIAPHRAGM ACTUATOR ......................................................................9
10.2 SPRING DIAPHRAGM ACTUATOR ON BODY S/A ..............................................9
10.3 HANDWHEEL REASSEMBLY .............................................................................10
10.4 LIMIT STOP REASSEMBLY ................................................................................10
10.5 VALVE BODY REASSEMBLY .............................................................................10
10.6 SEAT RING ALIGNMENT ....................................................................................11
10.7 DVD PLATE REASSEMBLY ................................................................................12
11. ACTUATOR STEM ADJUSTMENT ..............................................................................12
12. CHANGING BODY POSITION .....................................................................................13
13. CHANGING ACTUATOR ACTION ...............................................................................14
14. MANUAL ACTUATOR OPTION ...................................................................................15
14.1 DISASSEMBLY PROCEDURE ............................................................................15
14.2 MAINTENANCE ..................................................................................................15
14.3 REASSEMBLY PROCEDURE .............................................................................15
Copyright
Masoneilan® is a registered trademark of Dresser, Inc. All information contained herein is believed to be accurate at the time of
publication and is subject to change without notice.
Copyright 2010 by Dresser, Inc. All rights reserved.
Based on general field failure data and product design analysis, a useful life period of 25 years or longer can be expected for the 35002 series
Camflex II rotary valves. To maximize the useful life of the product it is essential to conduct annual inspections, routine maintenance and ensure
proper installation to avoid any unintended stresses on the product. The specific operating conditions will also impact the useful life of the product.
Consult the factory for guidance on specific applications if required prior to installation.

Instructions EF35002 - 08/10
Camflex® II 35002 Series Control Valves 1
Safety Information
Important - Please Read Before Installation
Masoneilan 35000 Series control valve instructions contain
DANGER, WARNING, and CAUTION labels, where necessary,
to alert you to safety related or other important information. Read
the instructions carefully before installing and maintaining your
control valve. DANGER and WARNING hazards are related
to personal injury. CAUTION hazards involve equipment or
property damage. Operation of damaged equipment can, under
certain operational conditions, result in degraded process system
performance that can lead to injury or death. Total compliance
with all DANGER, WARNING, and CAUTION notices is required
for safe operation.
This is the safety alert symbol. It alerts you to potential personal
injury hazards. Obey all safety messages that follow this symbol
to avoid possible injury or death.
Indicates a potentially hazardous situation which, if not avoided,
could result in death or serious injury.
Indicates a potentially hazardous situation which, if not avoided,
could result in serious injury.
Indicates a potentially hazardous situation which, if not avoided,
could result in minor or moderate injury.
When used without the safety alert symbol indicates a
potentially hazardous situation which, if not avoided, could
result in property damage.
Note: Indicates important facts and conditions.
About this Manual
• The information in this manual is subject to change without
prior notice.
• The information contained in this manual, in whole or part,
shall not be transcribed or copied without Masoneilan’s
written permission.
• Please report any errors or questions about the information
in this manual to your local supplier.
• These instructions are written specifically for the 35000 Series
control valve, and do not apply for other valves outside of
this product line.
Warranty
Items sold by Dresser®, Inc. are warranted to be free from
defects in materials and workmanship for a period of one
year from the date of shipment provided said items are
used according to Dresser recommended usages. Dresser,
Inc. reserves the right to discontinue manufacture of any
product or change product materials, design or specifications
without notice.
Note: Prior to installation
• The valve must be installed, put into service and
maintained by qualified and competent professionals
who have undergone suitable training.
• All surrounding pipe lines must be thoroughly flushed
to ensure all entrained debris has been removed from the
system.
• Under certain operating conditions, the use of damaged
equipment could cause a degradation of the performance
of the system which may lead to personal injury or death.
• Changes to specifications, structure, and components
used may not lead to the revision of this manual unless
such changes affect the function and performance of the
product.

Instructions EF35002 - 08/10
Camflex® II 35002 Series Control Valves 2
1. Introduction
The following instructions are designed to assist maintenance
personnel in performing most of the maintenance required on the
Camflex® II valve and if followed carefully will reduce maintenance
time.
Masoneilan has highly skilled Service Engineers available for
start-up, maintenance and repair of our valves and component
parts. In addition, regularly scheduled training programs are
conducted to train customer service and instrumentation
personnel in the operation, maintenance and application of
our control valves and instruments. Arrangements for these
services can be made through your Masoneilan Representative
or District Office. When performing maintenance use only
Masoneilan replacement parts. Parts are obtainable through
your local Masoneilan Representative or District Office. When
ordering parts always include MODEL and SERIAL NUMBER
of the unit being repaired.
2. General
These installation and maintenance instructions apply to 1"
through 12" sizes (DN 25 through 300 sizes), all available
ratings, and pneumatic actuators. The model number, size and
rating of the valve are shown on the serial plate. Refer to Figure
1 to identify the valve model.
3. Principle of Operation
The concept of the Camflex® II valve is based on an eccentrically
rotating spherical plug contained in a free flow body design. The
plug seating surface is joined by flexible arms to a hub which
slides onto a rotating shaft. The plug is free to center itself along
the axis of the shaft. A positive seal between plug and seat is
achieved by elastic deformation of the plug arms. The chamfered
seat ring is fixed in the valve body by a threaded retainer.
The plug and shaft are rotated through an angle of 50° by a lever
linked to a powerful spring-opposed rolling diaphragm actuator.
The solid disk-type handwheel and locking hex nut, optional, are
mounted on the yoke, opposite the actuator and may be used
to manually operate the valve or as a limit stop. A threaded hole
in the opposite side of the yoke is plugged but can be equipped
with an optional cap screw and locknut, which may be inserted
as a limit stop in the other direction, or in combination with the
handwheel to lock the valve in a selected position.
The handwheel on Camflex® II is designed to be used for
emergency action only.
3 5 2
5th SB
4th
3rd2nd
1st2nd
1st
Body Assembly Digits
Body
Series
Actuator Type Actuator Mounting Seat Design
3 Perpendicular to pipeline, valve
closes on stem extension
4 Perpendicular to pipeline, valve
opens on stem extension
1 Parallel to pipeline, valve closes
on stem extension
2 Parallel to pipeline, valve opens
on stem extension
1 Metal
2 Soft seat
3 Metal seat Lo-dB
4 Soft seat Lo-dB
5 Ceramic TRIM
20 Manual Actuator
35 Spring-opposed
rolling-diaphragm
70 Double acting
cylinder
Actuator Assembly Digits
235 Valve
7 Perpendicular to pipeline, valve
closes on stem extension
8 Perpendicular to pipeline, valve
opens on stem extension
5 Parallel to pipeline, valve closes
on stem extension
6 Parallel to pipeline, valve opens
on stem extension
Design
Series
SB(1)
Design
Figure 1
(1) optional, Camflex with separable bonnet.
35002 Series Body Numbering System

Instructions EF35002 - 08/10
Camflex® II 35002 Series Control Valves 3
The actuator is generally mounted with air-loading to counter the
dynamic torque on the plug. In Figure 2 the flow direction tends
to open the plug and the actuator is oriented to close it with
increasing air pressure. The actuator spring force assists plug off-
balance forces to open the valve on air failure. If the valve is to
close on air failure, the body would be turned around in the line so
that flow tends to close the plug and the actuator position would
be reversed.
The Camflex® II valve has a modified linear flow characteristic,
which is the same in either flow direction. It can be easily
transformed to an equal percentage when equipping the valve
with a positioner [4700 series, 8000 series, SVI (Smart Valve
Interface) or FVP (Fieldbus Valve Positioner)]. Reduced TRIM
factors 0.4 and 0.6 are available on all sizes. The flow capacity
of a 0.4 factor is 40% of the nominal capacity of the valve and it
is 60% for the 0.6 factor. Factors 0.1 and 0.2 are available on the
1" (DN 25) valve.
The ability of the Camflex® II valve to handle a wide range of
process fluid temperatures is due to the long integrally cast
bonnet. This affords ample radiation surface to normalize the
packing temperature. Therefore, with self-lubricating TFE Aramid
fiber packing, the valve handles temperatures from -200°C to
+ 400°C (-320°F to +750°F). When insulating the valve, do not
insulate the valve bonnet (see Figure 3).
Figure 3
4. Unpacking
Care must be exercised when unpacking the valve to prevent
damage to the accessories and component parts. Should
any problems arise, contact the Masoneilan Representative or
District Office.
Note: For ease of shipment and to prevent damage, valves
equipped with the spring diaphragm actuator are shipped
with the handwheel unassembled. Refer to Section 10.3 for
handwheel assembly procedures.
5. Installation
The Camflex® II valve has been assembled at the factory in
accordance with specific instructions concerning flow direction
and actuator mode. The valve must be installed so that the
controlled substance will flow through the valve in the direction
indicated by the flow arrow (25), which is located on the upper
part of the valve bonnet. The valve actuator should be installed
so the actuator is above the centerline of the shaft. To install the
valve in the line, proceed as follows:
CAUTION
CAUTION
WARNING
DANGER
Any change in flow direction or actuator mode must be
accomplished as outlined in Sections 7 and 10 of this instruction
manual. Failure to follow these could result in personal injury and
equipment malfunction.
A. Check the model number on the serial plate (56) against the
numbering System described in Figure 1 to determine the
valve mode.
B. Clean piping and valve of all foreign material such as welding
chips, scale, oil, grease or dirt. Gasket surfaces should be
thoroughly cleaned to ensure leak proof connections.
Figure 2
PlugSeat Ring
Fluid Flow
Shaft
Guide Bushing
Flexible Arms
Guide Bushing
AirActuator
Lever
Handwheel

Instructions EF35002 - 08/10
Camflex® II 35002 Series Control Valves 4
C. To allow for in-line inspection, maintenance or removal of
the valve without service interruption, provide a manually
operated stop valve on each side of the Camflex® II valve
with a manually operated throttling valve mounted in the
by-pass line.
Note: If a flanged Camflex® II is being installed and the
distance between flanges is established by ANSI or DIN,
spool pieces (spacers) are inserted between the line flange
and the valve body flange. Gaskets and valve bolting are
then installed and torqued using standard flange and line
bolting criteria.
D. For flangeless valves, refer to Figure 23 and determine the
correct size and quantity of bolts to be used for the valve and
flange rating.
E. If the valve is to be installed in a horizontal position, install the
lower flange bolting to provide a cradle, which will help support
the valve while installing the remaining bolts.
F. Place the valve in the line.
G. Select and install correct gaskets.
Note: Spiral wound gaskets, suitable for service conditions
are recommended.
H. Insert remaining flange bolting ensuring that the bolts align
with the special bosses on the body, which assure the valve is
centered in the line and also prevent rotation.
Note: For certain flange standards, through bolting is not
possible because of the valve body neck or bonnet. To
accommodate flange bolting, guide arms with threaded
holes or slots are provided on the valve body to receive
flange bolts (refer to Figure 22).
I. Tighten flange bolts evenly and firmly.
CAUTION
CAUTION
WARNING
DANGER
If the valve is to be insulated, do not insulate the valve bonnet.
Note: If the valve is equipped with manual handwheel, it
may now be placed in service.
6. Air Supply Piping
Air is supplied to the actuator through the 1/4" NPT tapped
connection in the diaphragm case. Refer to Figure 14 to
determine the correct supply pressure and tubing size, then
connect air supply piping.
CAUTION
CAUTION
WARNING
DANGER
Do not exceed maximum air pressure indicated. Personal injury
and equipment malfunction could result.
Note: When the valve is equipped with regulators or other
accessories supplied by Masoneilan, only connections to
those accessories are required since the piping to the actua-
tor is connected at the factory. Some valves equipped with
electrical accessories will require appropriate wiring. Refer to
manufacturer’s instructions for correct wiring information.
7. Placing in Service
With the valve properly installed in the line and all air or electrical
service connected, it is recommended that the valve be run
through one cycle to ensure proper functioning. Proceed as
follows:
A. Back off the handwheel (53) so that it will not interfere with the
operation of the valve and tighten the handwheel lock (52).
Note: If the valve is equipped with the optional limit stop
(77), it should also be backed off to prevent interference
with the operation of the valve.
B. Apply correct air pressure to the actuator.
Note: Valve should function smoothly and with maximum
pressure, the valve indicator (6) should show full open or
full close depending on valve mode.
C. Relieve air pressure and return valve to normal mode.
D. Gradually open process lines to place the valve in service.
E. Check for leaks. Repair as required.
CAUTION
CAUTION
WARNING
DANGER
Always ensure process pressure, air pressure and electrical
service are off and the valve is isolated and relieved of
pressure before performing maintenance on the valve.
F. If desired, the handwheel may be used as a limit stop. Set in
desired position and lock.
G. If the optional limit stop (77) is used, set and tighten locknut.
8. Disassembly
8.1 Actuator Removal From Body S/A (Refer to
Figure 16 and Figure 17)
Maintenance required on the internal components of the
valve or re-orientation of the actuator and body, requires that
the actuator and yoke be removed from the valve. On the size
6, 7 and 9 actuators, for ease of handling and reassembly, it
is recommended that the spring barrel be removed from the
yoke and then the yoke separated from the valve body.
CAUTION
CAUTION
WARNING
DANGER
Prior to performing maintenance on the valve, isolate the
valve, vent the process pressure and shut off supply and
signal air lines to the actuator.
Note: If the valve will be reassembled in the same
orientation, it is recommended that the body to yoke
orientation and the actuator to yoke orientation be marked
in relation to each other. This will simplify reassembly.
A. If required, remove the valve from the line.
B. Remove rear cover (29) and front cover (32) by removing
the two cover screws (30).
C. Remove bottom cover (11) and spring barrel boss
cover (58).

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

Instructions EF35002 - 08/10
Camflex® II 35002 Series Control Valves
CAUTION
CAUTION
WARNING
DANGER
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.
CAUTION
CAUTION
WARNING
DANGER
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. Masoneilan 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.
CAUTION
CAUTION
WARNING
DANGER
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.
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.
6

Instructions EF35002 - 08/10
Camflex® II 35002 Series Control Valves
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 (DN 25 through 300 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 ensure
proper clamping of this DVD plate.
Figure 6 shows the recommended thickness and
method of construction along with specific dimensions
to facilitate construction.
A
H
T
Ød
ØD
Valve
Size
A
inches
(mm)
d
inches
(mm)
D
inches
(mm)
H
inches
(mm)
T
inches
(mm)
1"
(DN 25)
1.063
(27)
0.142
(3.6)
1.236
(31.4)
0.079
(2)
0.4
(10)
11⁄2"
(DN 40)
1.496
(38)
0.157
(4)
1.772
(45)
0.118
(3)
2"
(DN 50)
1.929
(49)
0.157
(4)
2.205
(56)
0.118
(3)
0.7
(18)
3"
(DN 80)
2.913
(74)
0.177
(4.5)
3.248
(82.5)
0.157
(4)
0.8
(20)
4"
(DN 100)
3.858
(98)
0.197
(5)
4.213
(107)
0.275
(7)
0.8
(20)
6"
(DN 150)
5.905
(150)
0.236
(6)
6.260
(159)
0.354
(9)
1.0
(25)
8"
(DN 200)
7.913
(201)
0.236
(6)
8.268
(210)
0.394
(10)
1.0
(25)
10"
(DN 250)
9.843
(250)
0.236
(6)
10.315
(262)
0.394
(10)
1.2
(30)
12"
(DN 300)
11.732
(298)
0.276
(7)
12.204
(310)
0.472
(12)
1.2
(30)
6
0.5
(12)
Figure 6
A. Secure the valve body in a vise or appropriate holding
device with the plug side facing up (refer to Figure 16).
CAUTION
CAUTION
WARNING
DANGER
Care must be taken to avoid damage to the gasket
face on the valve body.
B. Place DVD plate wrench so it engages retainer lugs.
C. Engage the retainer wrench with an impact wrench or
suitable wrench and loosen, then remove DVD (105)
by turning counter-clockwise.
9. Maintenance
9.1 Diaphragm Replacement
(Refer to Figures 16 and 17)
The recommended maintenance to be performed on the
Camflex® II Spring Diaphragm Actuator is limited to the
replacement of the diaphragm (40). Removal of the actuator
from the valve is not required. To replace the diaphragm,
proceed as follows:
CAUTION
CAUTION
WARNING
DANGER
The valve must be isolated and free from any service pressure.
All electrical or air pressure to component parts must be off.
Pressure to actuator must be relieved.
Handwheel (53) and limit stop (77) must be backed off to
allow free travel of the lever (34).
A. Bypass the valve, shut off stop valves and isolate valve in
compliance with CAUTION note listed above.
B. Shut off and disconnect air supply tubing to the actuator.
C. Remove the four capscrews (41) from diaphragm case
(42) and remove diaphragm case.
D. Remove diaphragm (40).
Note: Diaphragm is glued to the top of the piston (43).
E. Remove tape or glue from the top of the piston and
clean thoroughly.
F. Clean diaphragm case (42) and spring barrel (38) at the
area that engages the diaphragm bead in preparation for
reassembly.
Note: To hold the diaphragm in place on the piston, an
adhesive disc (adhesive both sides) or rubber cement
is used. If rubber cement is used, it should be applied
to both the piston and the diaphragm or in accordance
with the manufacturer’s directions for the adhesive
used. For recommended adhesives see Figure 15.
G. Apply adhesive tape or cement to the top of the piston.
H. The inscription “Piston Side” is located on the diaphragm
(40). If used, apply cement to this side of the diaphragm.
I. Center and adhere diaphragm (40) to the top of the piston
(43) (see Figure 7, Step A).
J. Roll the diaphragm (40) inside the spring barrel (38) until
the bead on the diaphragm is located in the spring barrel
groove (see Figure 7, Step B).
7

Instructions EF35002 - 08/10
Camflex® II 35002 Series Control Valves
Figure 7
9.2.1 Hard Seat Lapping
Lapping is the process of working the valve sealing parts
against each other with an abrasive, to produce a close fit.
To perform the lapping operation, proceed as follows.
A.
Clean the seat ring sealing surface in the valve body and
the seat ring shoulder.
B. Apply a small amount of fine grinding compound to the
seat ring shoulder.
Figure 8
C. Insert the seat ring into the body and lap lightly by
rotating the seat ring in the body, ensuring that the
entire seat ring sealing surface in the valve body is
lapped. Do not rotate in one place.
Note: Figure 8 illustrates a simple tool which may
be fabricated to facilitate this lapping operation on
smaller valves.
D. Remove seat ring and clean thoroughly.
E. Place seat ring on a flat surface with the seating area
facing up.
F. Apply a small amount of fine grinding compound to the
seat ring seating surface.
8
CAUTION
CAUTION
WARNING
DANGER
Ensure that the capscrew holes in the diaphragm case
and spring barrel are aligned to prevent twisting of the
diaphragm in aligning the holes. The diaphragm case
(42) is normally assembled with the air inlet port placed
on the bottom side of the actuator. Depending on the
desired location, it can be placed in any desired position
around the spring barrel which allows the capscrew holes
to line up. However, the drain hole in the spring barrel
must always be facing down to allow for draining of any
moisture which may enter the spring barrel cylinder (38). If
the valve is equipped with the optional purge line, that line
is inserted into the drain hole.
K. Place the bead of the diaphragm (40) over the diaphragm
case lip (42) and carefully slide the diaphragm case (42)
down over the piston (43) until it seats on spring barrel (38).
(see Figure 7, Step C).
L. Ensure that the diaphragm case (42) is evenly seated on
the spring barrel (38), insert the four capscrews (41) and
tighten evenly.
M. Connect air supply line to diaphragm case (42).
N. Turn on air supply and check for leaks.
O. If necessary, reposition handwheel (53) and limit stop (77),
(optional) to desired location and place valve back in service.
9.2 Body S/A Internal Parts
During a maintenance of Camflex
®
II valve it is necessary
to inspect all the internal parts to determine if they are worn,
corroded and damaged, especially the following seating area:
– body and seat ring contact area.
– the seating surface of the plug and seat ring.
– the guide surface of the shaft and the guide bushing.
All parts which are damaged must be replaced by
original Masoneilan spare parts.

Instructions EF35002 - 08/10
Camflex® II 35002 Series Control Valves
G. Lap the plug lightly against the seat ring while turning
and oscillating the plug in all directions.
H. Clean seat ring, plug and valve body thoroughly in pre-
paration for reassembly.
9.2.2 Soft Seat
Do not lap the soft seat ring to the plug; however, the seat
ring must be lapped to the valve body. The procedure for
lapping the seat ring to the body is the same as stated in
items A through D of Section 9.2.1 on Hard Seats.
9.3 Yoke Assembly (Refer to Figures 16 and 17)
Maintenance required on the yoke (33) is limited to
replacement of the grommet (12) and the shaft bearing
(8). To replace either, the actuator must be separated from
the body. (Depending on the type of actuator used, refer
to appropriate section). Insert the grommet into the yoke
with the recessed part of the grommet towards the shaft
bearing. The shaft bearing (8) is slip fit into the yoke and is
removed by pushing it out towards the grommet.
CAUTION
CAUTION
WARNING
DANGER
Ensure the bearing seat in the yoke is clean. The bearing
should slide in easily. Do not use excessive force to push
bearing in.
10. Reassembly Procedures
10.1 Spring Diaphragm Actuator
When the actuator has been disassembled using Section 8.2
to reassemble the actuator, proceed as follows:
A. Replace spring (39) in piston (43).
B. Replace washer (44) and locknut (45).
Note: Locknut (45) must be threaded the full length of
the threads.
C. To reassemble the diaphragm and upper diaphragm case,
refer to Section 9.1, steps E. through L.
D. Replace locknut (46) and clevis (35).
E. Determine correct orientation and replace actuator on
yoke and replace lockwashers (37), capscrews (36) and
tighten firmly.
F. Refer to Section 11. for actuator stem adjustment.
10.2 Spring Diaphragm Actuator on Body S/A
(Refer to Figures 16 and 17)
After completing the required maintenance or changing
valve, actuator and yoke assembly, reassemble using the
following procedure:
A. Determine correct valve to actuator orientation.
B. If required, reposition body studs (28) and packing
flange studs (13).
Note: Depending on the actuator position, ensure that
the body studs (short studs) when placed through the
yoke holes will be positioned in the front of the yoke
opening for ease of accessibility.
C. Ensure that grommet (12) and shaft bearing (8) are in the
yoke. Turn shaft so the plug is in the closed position.
D. Slide the valve shaft partly into the lower yoke opening,
allowing enough room to place packing flange (14) over the
shaft (19).
Note: Packing flange (14) is placed on the shaft (19)
with the concave side toward the valve packing (17).
E. Ensure slots in packing flange (14) line up with packing
flange studs (13).
F. With packing flange on the shaft, continue sliding the valve
shaft toward the yoke (33) and through the grommet (12) in
the yoke (33).
G. Place the lever (34) in the yoke and in line with the shaft so
the boss on one side of the lever shaft hole is toward the
shaft bearing (8) and engage the shaft to the lever splines.
Note: Shaft must engage lever so the indicator dot on
the clevis pin, when placed in the lever hole, shows
the valve closed. Temporarily place clevis pin into lever
(34) and check indicator dot alignment. Dot should
just start touching the closed indicator line on the front
cover (32) (Refer to Figure 18). If the orientation is not
changed, align lever and mark on yoke then check
alignment. (Refer to Figure 17).
CAUTION
CAUTION
WARNING
DANGER
Do not use air pressure to check alignment, since during
normal operation and with full air pressure, the Indicator
may overshoot the closed Indicator mark on the cover.
This is acceptable.
H. Slide shaft completely through lever to engage shaft
bearing (8). Yoke should now be fully seated on the valve
bonnet flange.
I. Replace and tighten body stud nuts (27).
J. Replace packing flange stud nuts (94) and finger tighten
only.
K. Slide the lever (34) on the shaft (19) toward the valve and
tighten lever capscrew (49).
L. Pull the lever and shaft toward the bearing (8) in the yoke.
9

Instructions EF35002 - 08/10
Camflex® II 35002 Series Control Valves
LIMIT STOP STD
CAMFLEX 6" and 7"
LIMIT STOP STD CAMFLEX 4.5"
.
Figure 9
CAUTION
CAUTION
WARNING
DANGER
This is required to ensure the shaft (19) is shouldered on
the shaft bearing (8) and to ensure free operation of the
valve.
M.
Loosen lever capscrew (49) and slide lever (34) so it will
shoulder against the shaft bearing (8) and tighten capscrew
(49).
Note: if the actuator cylinder (38) has been removed
proceed to step N. If it has not, proceed to Section 11,
Actuator Stem Adjustment.
N. Determine the desired actuator action and replace actuator
cylinder (38) on the yoke (33) and secure in place with four
capscrews (36) and lockwashers (37).
O. Proceed to Section 11, Actuator Stem Adjustment.
10.3 Handwheel Reassembly
A. Place the valve so the position cover (11) is up.
B. Remove Truac ring (50) and handwheel washer (51) from
the handwheel powerscrew.
C. Insert handwheel powerscrew with lock (52) in place into
the appropriate hole in the yoke and screw in clockwise.
D. Replace the washer (51) and Truac ring (50)
E. Back off handwheel lightly against washer and lock in the
off position with lock (52).
F. Replace bottom cover (11) by snapping in place.
Note: To use the handwheel, loosen the lock (52) and
turn. The handwheel can be used as a limit stop on the
valve by locking it in any position.
10.4 Limit Stop Reassembly
Two different types of assembly for the limit stop in function of
the actuator size: see Figure 9.
10.5 Valve Body Reassembly (Refer to Figure 16)
Prior to reassembly, the valve body should be thoroughly
cleaned and the seat ring and plug may be lapped as
indicated in Section 9.2. Upon completion of the above,
proceed as follows:
CAUTION
CAUTION
WARNING
DANGER
Lubricants and sealers are required during reassembly.
Figure 15 identifies recommended products for certain
service conditions. Ensure that any lubricant used is
compatible with service conditions.
A. Apply a small amount of thread lubricant to the seat ring
retainer threads and install seat ring retainer (3) and hand
tighten only.
CAUTION
CAUTION
WARNING
DANGER
Do not tighten the seat ring retainer to torque specification
at this time.
B. Place valve body (1) on flat surface so that the seat is
down.
C. Coat lower guide bushing (22) with recommended lubricant
and insert into the body.
Note: Groove in the guide bushing (22) must be
towards the body center. Refer to Figure 10 for correct
assembly sequence. If the shaft (19) is the original
design it may have a circular grove, if so, install the
retaining ring (18).
Figure 10
D.
Coat the upper guide bushing (21) spacer tube (20) and the
shaft splines (plug side) with recommended lubricant.
E. Insert the spacer tube (20) over the lubricated part of
the shaft.
CAUTION
CAUTION
WARNING
DANGER
When a recessed groove exists in the spacer tube (20),
this spacer tube (20) must be placed on the shaft (19)
so that the shaft shoulder or retaining ring fits into the
recessed groove on one end of the spacer tube (20).
10

Instructions EF35002 - 08/10
Camflex® II 35002 Series Control Valves
F. Place upper guide bushing (21) on the shaft (19).
G. Place plug (4) in body so it rests on the seat.
H. Insert the shaft sub-assembly into the body (1) and
engage plug (4) and lower guide bushing (22).
Note: The shaft (19) should be inserted into the plug so
that when the plug is seated, the slot at the outer end of
the shaft is perpendicular to the flow through the valve.
In case of 35000 SB, separable bonnet version, follow
the operations described from N to U.
I. Install the packing box ring (23), bevel side out, over the shaft
(19) and into the valve bonnet being sure that the hole in the
ring is aligned with the threaded port in the bonnet.
J. Apply a suitable lubricant to the threads of the safety pin
(16) and screw into the body neck and tighten.
CAUTION
CAUTION
WARNING
DANGER
The Safety Pin is a safety device which must not be
replaced by a plug. Use only genuine Masoneilan
supplied safety pins. Pin must engage hole in packing
box ring (23). Test by manually pulling on the shaft to
verify engagement.
K. Install packing (17) insuring that the skive cut of each piece
of packing is offset approximately 120° from that of the
adjacent piece of packing.
Note: Sizes 1" thru 3" (DN 25 through 80) use 7 pieces
of packing; sizes 4" thru 12" (DN 100 through 300) use
6 pieces of packing.
L. Install packing follower (15) rounded, bevel side out.
M. Proceed to Section 10.6 on seat ring alignment.
N through U apply to separable bonnet design only:
N. If necessary, install the studs (103) in the bonnet (102).
O. Install the stop ring (100).
P. Place the gasket (101) in the groove of the bonnet. The old
gasket (101) must not be re-used.
Q. Place the bonnet with the studs on the body and screw the
nuts (104).
R. Tighten the nuts (104) according the table of Figure 11.
Valve Size Torque lb.ft Torque m.N
1" (DN 25)
22 3011⁄2" (DN 40)
2" (DN 50)
3" (DN 80) 55 75
4" (DN 100) 55 75
6" (DN 150) 107 145
Figure 11
Note: It is important to tighten the nuts step by step,
during the tightening the bonnet flange must keep the
shaft axis aligned.
S.
Install packing (17) insuring that the skive cut of each piece
of packing is offset approximately 120° from that of the
adjacent piece of packing.
Note: Sizes 1" through 3" (DN 25 through 80) use 7
pieces of packing; sizes 4" through 12" (DN 100 through
300) use 6 pieces of packing.
T. Install packing follower (15) rounded, bevel side out.
U. Proceed to Section 10.6 on seat ring alignment.
10.6 Seat Ring Alignment
Aligning the seat ring (2) and plug (4) is required whenever
the seat ring or plug have been replaced or disassembled.
Proceed as follows:
A. Place valve on flat surface with retainer (3) and seat ring (2)
facing up.
Note: The casting marks (=) indicate the seat ring end
of the body.
B. Remove the retainer ring (3) and the seat ring (2).
C. Apply a thin coat of sealant to the seat ring shoulder that
engages the body and replace seat ring (2).
D. Apply a small amount of thread lubricant to the seat ring
retainer threads and install seat ring retainer (3) and hand
tighten only.
CAUTION
CAUTION
WARNING
DANGER
Do not tighten the seat ring retainer to torque specifi-
cation at this time.
E. Replace lever (34) on valve shaft (19) and tighten lever
capscrew (49).
F. Using the lever (34) manually close the plug with sufficient
force to allow seat ring and plug to align.
G. Using the seat ring wrench, tighten seat ring retainer to the
minimum torque value specified in Figure 12.
Note: In some cases, for the valves from 3" to 12"
(DN 80 to 300) with metal seat, the alignment can be
improved by placing a piece of paper 0.10mm (0.004")
thick and approximately 6mm (1/4") wide at a point
where the leading edge and the trailing edge of the plug
contacts the seat ring and close the plug. With a slight
pressure on the lever, the paper strips should both be
clamped in place. For the valve 8" to 12" (DN 200 to
300), the piece of paper shall be 0.20mm (0.008") thick
and 12mm (1/4") wide.
11

Instructions EF35002 - 08/10
Camflex® II 35002 Series Control Valves
Valve Size Minimum Torque
lb.ft m.N
1" (DN 25) 60 81
11⁄2" (DN 40) 95 130
2" (DN 50) 100 135
3" (DN 80) 290 395
4" (DN 100) 363 490
6" (DN 150) 825 1120
8" (DN 200) 975 1320
10" (DN 250) 1350 1830
12" (DN 300) 2250 3050
Figure 12
H. Proceed to section on body to actuator assembly.
10.7 DVD Plate Reassembly
Using the same method and tooling as described in 8.3.2,
tighten the Lo-dB plate at the indicated torque given in the
table of Figure 13.
Valve Size Tightening Torque
lb.ft m.N
1" (DN 25) 74 100
11⁄2" (DN 40) 81 110
2" (DN 50) 100 135
3" (DN 80) 220 295
4" (DN 100) 363 490
6" (DN 150) 780 1050
8" (DN 200) 975 1320
10" (DN 250) 1320 1830
12" (DN 300) 2250 3050
Figure 13
11. Actuator Stem Adjustment
(Refer to Figures 16 and 17)
CAUTION
CAUTION
WARNING
DANGER
The following procedures must be adhered to in order to ensure
correct valve operation. Failure to do so could result in valve
damage and equipment malfunction.
Correct actuator stem adjustment is imperative for proper valve
functioning. With the actuator assembled to the valve in the
desired location and orientation proceed as follows:
Note: If any of the following steps were completed during
maintenance or reorientation of actuator to valve, proceed to
the next step.
A. Remove front cover (32) and rear cover (29) by removing the
two-cover screws (30).
B. Back off handwheel (53) so it does not interfere with the
operation of the lever (34).
C. If applicable, back off optional limit stop (77) so it will not
interfere with the operation of the lever (34).
D. Apply air pressure to the actuator and move lever (34) to an
intermediate position.
CAUTION
CAUTION
WARNING
DANGER
Do not exceed pressure listed in Figure 14 for the actuator
used. Do not use handwheel (53) to move lever (34).
E. Remove adjustable indicator (88) by removing the two
screws (89).
F. Remove clevis pin clip (5), remove clevis pin (7).
G. Relieve air pressure to the actuator to allow the clevis (35) and
lever (34) to separate.
Note: If the unit is air-to-open, separate clevis (35) and lever
(34) then loosen clevis locknut (46) and remove clevis.
H. Insert clevis pin (7) back in lever (34).
I. Manually push the lever (34) so the valve is in the closed
position.
J. Temporarily replace front cover (32) and check the location of
the clevis pin (7) in relation to the closed position indicator mark
on front cover (32).
CAUTION
CAUTION
WARNING
DANGER
The relationship must be as shown in Figure 18. If it is not,
the yoke must be separated from the body and the lever
(34) repositioned on the shaft. Refer to appropriate section.
Failure to comply could result in the valve short stroking or
over stroking and could damage the valve.
Note: If the unit is air-to-open, replace clevis locknut (46)
and clevis (35).
K. Proceed to one of the following sections for final adjustment.
Air-to-Open, Section (K-1), Air-to-Close Section (K-2).
K-1. Air-to-Open
After completing step A through J of Section 11, proceed as
follows:
A. Scribe a line on the clevis (35) in line with the inside of the
yoke.
B. Connect a regulated air supply directly to the actuator and
gradually apply 8 psig (.55 barg) for size 9 actuators and 7
psig (.48 barg) for the others.
C. The clevis should move approximately 1/4".
D. With the lever and valve plug in the fully CLOSED position,
the holes in the clevis (35) and lever (34) should be in line.
Note: If holes are in line proceed to Step J. If not in line,
continue to next step.
E. Move lever (34) to full open position.
F. Gradually apply sufficient air pressure to extend clevis
locknut (46) to an accessible position.
12

Instructions EF35002 - 08/10
Camflex® II 35002 Series Control Valves
CAUTION
CAUTION
WARNING
DANGER
Do not exceed pressure listed in Figure 14 for the
actuator used.
G. Loosen clevis locknut (46).
H. Reduce air pressure to actuator to 7 psig.
I. Screw clevis (35) in or out on actuator stem so that the
holes in the clevis (35) and lever (34) are aligned with the
lever and plug in the fully closed position.
J. Insert clevis pin (7) so indicator dot is visible through front
cover (32) and secure with clevis pin clips (5).
Note: On the size 6 and 7 actuators, without the
adjustable indicator (88), the clevis pin (7) must be
installed so it protrudes toward the front cover (32). If the
indicator dot is damaged, paint may be applied to the
end facing the front cover (32) to make it more visible.
K. Gradually apply sufficient air pressure to extend clevis
locknut (46) to an accessible position and tighten firmly.
CAUTION
CAUTION
WARNING
DANGER
Do not exceed pressure listed in Figure 14 for the
actuator used.
L. Relieve air pressure.
M. If used, replace adjustable indicator (88) to lever (34) with
screws (89).
Note: If required, adjust indicator to front cover
indicator marks.
N. Replace front cover (32) and rear cover (29) and secure in
place with cover screws (30).
O. Replace spring barrel boss cover (58) and bottom cover
(11) (Snap fit).
Note: Prior to placing the valve in service, operate the
valve actuator through one complete cycle to ensure
proper functioning.
P. If desired, set handwheel (53) or optional limit stop (77) to
desired position.
K-1. Air-to-Close
After completing step A through J of Section 11, proceed
as follows:
A. Manually push lever (34) to the full CLOSED position.
B. Connect a regulated air supply to the actuator.
C. Gradually apply the final air pressure corresponding to the
closed position. See value on the serial plate.
D. With the lever (34) and valve plug in the CLOSED position,
the holes in the clevis (35) and lever (34) should be in line.
Note: If holes are in line proceed to Step H, if not in line,
continue to the next step.
E. Release air pressure so clevis (35) will separate from lever
(34).
F. Loosen clevis locknut (46).
G. Screw clevis (35) in or out so that when the air pressure
corresponding to the closed position mentioned in C above
is applied, clevis holes and lever will be in line.
H. Insert clevis pin (7) so indicator dot is visible through front
cover (32) and secure with clevis pin clips (5).
Note: On the size 6 and 7 actuators, without the
adjustable indicator (88), the clevis pin (7) must be
installed so it protrudes toward the front cover (32). If
the indicator dot is damaged, paint may be applied to
the end of the clevis pin (7) facing the front cover (32)
to make it more visible.
I. Tighten clevis locknut (46).
J. Relieve air pressure to actuator.
K. If used, replace adjustable indicator (88) to lever (34) with
screws (89).
Note: If required, adjust indicator (88) to front cover
(32) indicator marks with the valve in the closed
position.
L. Replace front cover (32) and rear cover (29) and secure in
place with cover screws (30).
M. Replace spring barrel boss cover (58) and bottom cover
(11) (Snap fit).
Note: Prior to placing the valve in service, operate the
valve actuator through one complete cycle to ensure
proper functioning.
N. If desired, set handwheel (53) or optional limit stop (77) to
desired position.
12. Changing Body Position
CAUTION
CAUTION
WARNING
DANGER
Before any change in flow direction or actuator mode is made,
the valve and actuator must be resized using current process
conditions. Any change in the flow direction or actuator mode
must be accomplished as outlined in this instruction, otherwise
equipment malfunction could result.
Changing service requirements or service conditions may require
a change in flow direction through the Camflex
®
II valve. Figure 19
illustrates the various positions and flow directions in which the
valve may be placed to accommodate requirements.
CAUTION
CAUTION
WARNING
DANGER
Changing the body position and flow direction could also require
relocating the actuator. Ensure that the actuator location and
action are in accordance with the recommended positions and
modes illustrated in Figure 19. Illustrations are shown looking
at the body through the bonnet with the actuator in front of the
valve. The plug shaft is always rotated in a clockwise direction
by the actuator to open the valve.
13

Instructions EF35002 - 08/10
Camflex® II 35002 Series Control Valves
Valve Size
Actuator Size
Diameter
Maximum Air Supply
Recommended Tubing
A 564 Gr 630 Shaft Austenitic Stainless
Steel Shaft
inches (mm) kPa Psi kPa Psi mm inches
1" (DN 25) 41⁄2 (114) 138 20 138 20 4x6 1⁄4"
11⁄2" (DN 40) 41⁄2 (114) 172 25 172 25 4x6 1⁄4"
2" (DN 50) 41⁄2 (114) 207 30 207 30 4x6 1⁄4"
3" (DN 80) 6 (152) 207 30 207 30 4x6 1⁄4"
4" (DN 100) 6 (152) 310 45 310 45 4x6 1⁄4"
6" (DN 150) 7 (177) 448 65 310 45 4x6 1⁄4"
8" (DN 200) 7 (177) 517 75 379 55 4x6 1⁄4"
10" (DN 250) 7 (177) 517 75 448 65 4x6 1⁄4"
12" (DN 300) 7 (177) 517 75 517 75 4x6 1⁄4"
6" (DN 150) 9 (228) 344 50 276 40 4x6 1⁄4"
8" (DN 200) 9 (228) 344 50 276 40 4x6 1⁄4"
10" (DN 250) 9 (228) 448 65 310 45 4x6 1⁄4"
12" (DN 300) 9 (228) 517 75 379 55 4x6 1⁄4"
G. Remove Truarc ring (50) and washer (51) from handwheel
powerscrew assembly.
H. Unscrew and remove handwheel powerscrew assembly from
yoke (33).
I. Remove handwheel thread plug (48).
Note: If the actuator is equipped with the optional limit
stop (77), in place of the handwheel thread plug, it must
be removed.
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.
J. Ensure spring barrel is properly supported.
K. Loosen and remove capscrews (36) and lockwashers (37)
then remove spring barrel (38).
CAUTION
CAUTION
WARNING
DANGER
If the orientation of the actuator to valve requires that the
yoke be rotated about the valve, it is recommended that
Section 12 on changing yoke position be accomplished
before proceeding.
14
Figure 14
To change body position proceed as follows:
A.
Refer to Figure 19 and determine which is the desired valve
position, flow direction and which actuator position is required.
B. Proceed to the appropriate section of this instruction for the
required disassembly and assembly procedures.
13. Changing Actuator Action
CAUTION
CAUTION
WARNING
DANGER
Before any change in flow direction or actuator mode is made,
the valve and actuator must be resized using current process
conditions. Any change in the flow direction or actuator mode
must be accomplished as outlined in this instruction, otherwise
equipment malfunction could result.
A. Remove front cover (32) and rear cover (29) by removing the
two cover screws (30).
B. Remove spring barrel boss cover (58) (Snap fit).
C. Remove bottom cover (11) (Snap fit).
D. Using a manual loading panel, apply sufficient air pressure to the
actuator to move the lever (34) 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 lever.
E. Remove clevis pin clips (5) and remove clevis pin (7).
F. Position lever so it does not contact handwheel power-screw
assembly.

Instructions EF35002 - 08/10
Camflex® II 35002 Series Control Valves
Service Sealant Lubricant Diaphragm Glue
Condensate and Steam Silver Seal T-J, Turbo 50 or
HYLOMAR SQ 32
Molykote G or
GRAPHENE 702
3M High Track adhesive
transfer tape (or equal)
Cryogenic
-20°F to -320°F
(-29°C to -196°C)
Crown N. 9008 Teflon Spray
or RODORSIL CAF 730
Crown N. 9008 Teflon Spray
or GRAPHENE 702
3M Pressure sensitive tape,
double coated (or equal)
Oxygen Drilube type 822 or
BONNAFLON S/9
Drilube type 822 or
OXIGNENOEX FF250
Eastman 910 Cement
(or equal)
All Others* John Crane Plastic lead N.2
HYLOMAR SQ 32
Molykote G or
GRAPHENE 702
Goodyear Plibond Cement
(or equal)
15
Figure 15
* Except Food Services.
L. With the yoke assembled to the valve in the required orientation,
place spring barrel (38) on desired yoke location and secure
with capscrews (36) and lockwashers (37), and tighten firmly.
M. Screw in handwheel powerscrew assembly into the
powerscrew hole of the yoke which is on the opposite side
of the spring diaphragm actuator.
Note: Handwheel action is always the same as air action
and opposes the spring.
N. Replace handwheel washer (51) and Truarc ring (50) and back
off handwheel so the powerscrew will not interfere with the
operation of the lever.
O. Replace handwheel thread plug (48).
Note: If the valve is equipped with the optional limit stop
(77) instead of the thread plug, it must now be installed, but
ensure it is backed off as not to interfere with the operation
of the lever at this time.
P. Proceed to Section 11, on Actuator Stem Adjustment.
14. Manual Actuator Option
The manual type actuator is designed to close the valve by
rotating the handwheel in a clockwise direction. Anti-rotation
of the handwheel is obtained through a detente device located
between handwheel (53) and retainer (87).
14.1 Disassembly Procedure
The disassembly procedure for manual actuator is similar to
the procedure for spring diaphragm actuator see Section 8.1.
14.2 Maintenance
Routine maintenance of the manual actuator requires that a
suitable lubricant be periodically applied to the handwheel
powerscrew.
Bearings may require replacement due to service conditions
or corrosion.
The replacement of the handwheel detent mechanism
should be required.
14.3 Reassembly Procedure
There is no specific adjustment for the reassembly of manual
actuator. For details see Figure 21.

Instructions EF35002 - 08/10
Camflex® II 35002 Series Control Valves 16
3 2 4 1 105 22 21 20 19 24
103 104 100 101 102
1112139414159190281716
23 25 26
7
6
32
8
10
9
27 29 30 31 5 18
Figure 16
106
N°9
89
34
33
55
54
53
58
48
88 56 57 35 36 37 38
46
777849505152
45 44
39 43 40 41 42107
Figure 17
Original Design

Instructions EF35002 - 08/10
Camflex® II 35002 Series Control Valves
Ref. Qty. Part Name Ref. Qty. Part Name Ref. Qty. Part Name
1 1 Body 28 2 Body Stud 56 1 Serial Plate
2 1 Seat Ring 29 1 Rear Cover 57 2 Plate Screw
3 1 Retainer 30 2 Cover Screw 58 1 Boss Cover
4 1 Plug 31 2 Screw Retainer 60 • Counter-Flange
5 2 Clevis Pin Clip 32 1 Front Cover 61 • Gasket
6 1 Indicator Dot 33 1 Yoke 64 • Stud
7 1 Clevis Pin 34 1 Lever 67 • Stud
8 1 Bearing 35 1 Clevis 68 • Nut
9 1 Shaft Cover 36 4 Cap Screw 77 1 Travel Stop
10 1 Cover Screw 37 4 Lock Washer 78 1 Nut
11 1 Bottom Cover 38 1 Spring Barrel 88 1 Adjustable Indicator
12 1 Grommet 39 1 Spring 89 2 Indicator Screw
13 2 Packing Flange Stud 40 1 Diaphragm 90 1 Inner O-Ring
14 1 Packing Flange 41 4 Cap Screw 91 1 Outer O-Ring
15 1 Packing Follower 42 1 Diaphragm Case 92 1 Inner O-Ring
16 1 Safety Pin 43 1 Piston-Stem 93 1 Outer O-Ring
17 ** Packing 44 1 Lock Washer 94 2 Nut
18* 1 Shaft Retaining Ring 45 1 Lock Nut 95 1 Inner O-Ring
19 1 Shaft 46 1 Lock Nut 96 1 Outer O-Ring
20 1 Spacer 48 • Thread Plug 100 1 Stop Ring
21 1 Upper Guide 49 1 Lever Cap Screw 101 1 Body Gasket
22 1 Lower Guide 50 1 Truarc Ring 102 1 Bonnet
23 1 Packing Box Ring 51 1 Handwheel Washer 103 4 Bonnet Stud
24 1 Warning Plate 52 1 Handwheel Lock 104 4 Bonnet Nut
25 1 Flow Arrow 53 1 Handwheel Shaft 105 1 Lo-dB Plate
26 2 Plate Screw 54 1 Handwheel Plate 106 4 Adaptor Screw
27 2 Nut 55 2 Plate Screw 107 1 Adaptor
Parts Reference
* Applies to original design only.
** Quantity varies by size and bonnet type. Confirm required quantity from valve serial records.
17

Instructions EF35002 - 08/10
Camflex® II 35002 Series Control Valves 18
ACCEPTABLE
NOT ACCEPTABLE
2
4
6
8
DIRECTION OF FLOW
AIR TO OPEN
FLOW TENDING TO CLOSE
CLOSE ON AIR FAILURE
AIR TO CLOSE
FLOW TENDING TO OPEN
OPEN ON AIR FAILURE
1
3
5
7
DIRECTION OF FLOW
The body is shown behind the actuator.
Figure 18
Figure 19
BOLT
PIPE
PIPEBONNET
FLAT
WASHER
LEVER ARM
PACKING FLANGE
REVERSED
PACKING
STUD NUT
STEM
Figure 20
Figure 21