Emerson Fisher 657 And 667 Installation Instructions

2015-03-30

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Instruction Manual

667 Size 30-76 and 87 Actuators

D100310X012

November 2013

Fisherr 667 Diaphragm Actuator
Sizes 30-76 and 87
Contents
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Scope of Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Educational Services . . . . . . . . . . . . . . . . . . . . . . . . . 3
Maximum Pressure Limitations . . . . . . . . . . . . . . . . 3
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Mounting the Actuator on the Valve . . . . . . . . . . . . 5
Discussion of Bench Set . . . . . . . . . . . . . . . . . . . . . . . 6
Spring Verification . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Installing the Stem Connector Assembly . . . . . . . . . 9
Friction Discussion . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Deadband Measurement . . . . . . . . . . . . . . . . . . . . . 11
Loading Connection . . . . . . . . . . . . . . . . . . . . . . . . . 12
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Actuator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Top-Mounted Handwheel Assembly
(Adjustable Down Travel Stop) . . . . . . . . . . . . . 15
Side-Mounted Handwheel Assembly for
Size 34 through 60 Actuators . . . . . . . . . . . . . . . 19
Side-Mounted Handwheel Assembly for
Size 70, 76, and 87 Actuators . . . . . . . . . . . . . . . 20
Casing-Mounted Travel Stops . . . . . . . . . . . . . . . . . 22
Parts Kits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Side-Mounted Handwheels Retrofit Kits . . . . . . . . 24
Top-Mounted Handwheel Retrofit Kits . . . . . . . . . 24
Actuator Repair Kits . . . . . . . . . . . . . . . . . . . . . . . . . 24

Figure 1. Fisher 667 or 667-4 Actuator Mounted on
easy-e™ Valve

W1916-1*

Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Actuator Assembly . . . . . . . . . . . . . . . . . . . . . . . . . .
Top-Mounted Handwheel . . . . . . . . . . . . . . . . . . .
Side-Mounted Handwheel (34-60) . . . . . . . . . . .
Side-Mounted Handwheel (70, 76, and 87) . . . .
Casing Mounted Travel Stops . . . . . . . . . . . . . . . . .

24
24
25
33
33
35

Introduction
Scope of Manual
This instruction manual provides information on installation, adjustment, maintenance, and parts ordering for the
Fisher 667 actuator in sizes 30 through 76 and size 87. The 667-4 actuator in sizes 70 and 87 is also covered. Refer to
separate instruction manuals for information about the valve positioner and other accessories used with these
actuators.
Do not install, operate, or maintain a 667 actuator (see figure 1) without being fully trained and qualified in valve,
actuator, and accessory installation, operation, and maintenance. To avoid personal injury or property damage, it is
important to carefully read, understand, and follow all the contents of this manual, including all safety cautions and
warnings. If you have any questions about these instructions, contact your Emerson Process Management sales office
before proceeding.

www.Fisher.com

Instruction Manual

667 Size 30-76 and 87 Actuators

D100310X012

November 2013

Table 1. Specifications
ACTUATOR SIZE

SPECIFICATION(1)
Nominal Effective Area
Yoke Boss Diameter
Acceptable Valve Stem Diameter
Maximum Allowable Output Thrust(4)
Maximum Travel(2)
Maximum Casing Pressure for Actuator
Sizing(4,6)
Maximum Excess Diaphragm
Pressure(4,5)
Maximum Diaphragm Casing
Pressure(4,6,7)
Approximate Weight
Material
Temperature
Capabilities

70(1)

87(1)

Sq cm

297

445

667

1006

677

1006

1419

1006

1419

Sq Inch

105

156

105

156

220

156

220

125

Inch

2-1/8

2-13/16

3-9/16

9.5

12.7

19.1

25.4

Inch

3/8

1/2

3/4

10230

12010

25131

33582

25131

30246

39142

30246

39142

2300

2700

5650

7550

5650

6800

8800

6800

8800

76(3)

Inch

0.75

1.125

1.5

3(3)

Bar

3.8

4.8

4.5

3.8

4.5

3.8

3.4

Psig

Bar

3.8

1.4

0.7

Psig

Bar

7.6

6.2

5.2

4.5

5.2

4.5

4.1

Psig

110

115

118

Pounds

121

122

254

190

260

Nitrile Elastomers

-40 to 82_C (-40 to 180_F)

Silicone Elastomers

-54 to 149_C (-65 to 300_F)

1. These values also apply to the 667-4 actuator construction.
2. Actuator travel may be less than the value listed after connected to the valve.
3. Maximum actuator travel for 667-4 is 102 mm (4 inches).
4. See also the Specifications portion of the introduction section.
5. Additional pressure may be added when the actuator is at full travel. If the Maximum Excess Diaphragm Pressure is exceeded, damage to the diaphragm or diaphragm casing might result.
See the Maximum Pressure Limitation section.
6. Maximum diaphragm casing pressure must not be exceeded and must not produce a force on the actuator stem greater than the maximum allowable actuator output thrust or the maxi
mum allowable stem load. See the Maximum Pressure Limitation section.
7. This maximum casing pressure is not to be used for normal operating pressure. Its purpose is to allow for typical regulator supply settings and/or relief valve tolerances.

Description
The 667 actuator (figure 1) and the 667-4 actuator are reverse-acting, spring-opposed diaphragm actuators. They
provide automatic operation of control valves. The 667 actuator provides 76 mm (3 inches) maximum actuator travel.
The 667-4 actuator provides 102 mm (4 inches) maximum actuator travel. Both actuators position the valve plug in
response to varying pneumatic loading pressure on the diaphragm. Figure 2 shows the operation of these actuators.
A 667 or 667-4 actuator can be furnished with either a top-mounted or a side-mounted handwheel assembly. A
top-mounted handwheel assembly is normally used as an adjustable down travel stop. (A down travel stop limits
actuator travel in the down direction [when the stem is traveling out of the actuator]. Travel in the up direction is when
the stem is traveling into the actuator.) A side-mounted handwheel assembly is normally used as an auxiliary manual
actuator. The side-mounted handwheel can also be used as an adjustable up or down travel stop. Casing-Mounted
adjustable up or down travel stops are also available on this actuator.

Note
If repeated or daily manual operation is expected, the actuator should be equipped with a side-mounted handwheel rather than a
casing-mounted travel stop or top-mounted handwheel. The side-mounted handwheel is designed for more frequent use as a
manual operator.

Instruction Manual

667 Size 30-76 and 87 Actuators

D100310X012

November 2013

Figure 2. Schematic of Fisher 667 and 667-4 Actuators

AIR LIFTS
STEM UP

SPRING PUSHES
STEM DOWN

STEM
SEAL

STEM

A6759

Specifications
Refer to table 1 for Specifications of the 667 and 667-4 actuators. See the actuator nameplate for specific information
for your actuator.

Educational Services
For information on available courses for Fisher 667 diaphragm actuators, as well as a variety of other products,
contact:
Emerson Process Management
Educational Services, Registration
P.O. Box 190; 301 S. 1st Ave.
Marshalltown, IA 50158-2823
Phone: 800-338-8158 or
Phone: 641-754-3771
FAX: 641-754-3431
e-mail: education@emerson.com

WARNING
To avoid personal injury or damage to equipment that may result in the malfunction of the control valve or loss of control
of the process caused by excessive pressure, do not exceed the Maximum Pressures listed in table 1. Refer to the Maximum
Pressure Limitations section.

Maximum Pressure Limitations
The casing and diaphragm of 667 actuators are pressure operated. This air pressure provides energy to compress the
spring, to stroke the actuator, and to seat the valve. The following explanations describe the maximum pressure limits
for an actuator. Refer to the nameplate or table 1 for maximum values for your actuator.

667 Size 30-76 and 87 Actuators

Instruction Manual

November 2013

D100310X012

D Maximum Casing Pressure for Actuator Sizing: This is the maximum pressure that can be applied at less than full
travel of the actuator. If this stroking pressure is exceeded before the upper diaphragm plate contacts the travel
stop, damage to the stem or other parts might result.
D Maximum Excess Diaphragm Pressure: Additional pressure may be added when the actuator is at full travel. If the
Maximum Excess Diaphragm Pressure is exceeded, damage to the diaphragm or diaphragm casing might result.
Because the actuator has traveled its specified travel, and the diaphragm head is physically stopped from movement,
the energy from any additional air pressure is transmitted to the diaphragm and diaphragm casings. The amount of air
pressure that can be added once the actuator has traveled to the stops is limited by the resultant adverse effects that
may occur. Exceeding this limiting factor could result in leakage or casing fatigue due to the deformation of the upper
diaphragm casing.
D Maximum Diaphragm Casing Pressure: If the Maximum Diaphragm Casing Pressure is exceeded, damage to the
diaphragm, diaphragm casing, or actuator might result.

Installation
WARNING
Always wear protective gloves, clothing, and eyewear when performing any installation operations.
Check with your process or safety engineer for any other hazards that may be present from exposure to process media.
If installing into an existing application, also refer to the WARNING at the beginning of the Maintenance section in this
instruction manual.

Key number locations are shown in figures 6, 7, and 8, unless otherwise noted. Also, refer to figure 3 for location of
parts.

CAUTION
To avoid parts damage, do not use an operating pressure that exceeds the Maximum Diaphragm Casing Pressure (table 1)
or produces a force on the actuator stem greater than the Maximum Allowable Output Thrust (table 1) or the Maximum
Allowable Valve Stem Load.

D Valve/Actuator Assembly: If the actuator and valve are shipped together as a control valve assembly, it has been
adjusted at the factory, and may be installed in the pipeline. After installing the valve in the pipeline, refer to the
Loading Connection procedures.
D Actuator Mounting: If the actuator is shipped separately or the actuator has been removed from the valve, it is
necessary to mount the actuator on the valve before placing the valve in the pipeline. Refer to the following
actuator mounting procedures before placing the valve in service. It is recommended that you perform the Bench
Set Spring Adjustment procedures in this section to confirm that the actuator is adjusted correctly for the valve
travel.
D Positioner: If a positioner is installed, or is to be installed on the actuator, refer to the positioner instruction manual
for installation. During the adjustment procedures, it will be necessary to provide a temporary loading pressure to
the actuator diaphragm.

Instruction Manual
D100310X012

667 Size 30-76 and 87 Actuators
November 2013

D Handwheel Cap: If the handwheel cap (key 247, figures 9, 11, or 17) is not in place, install the cap by pushing it on
by hand until it snaps into place.

Mounting the Actuator on the Valve
CAUTION
The 667 actuator spring load pushes the stem down out of the actuator yoke (see figure 2), and it can come in contact with
the valve stem during actuator mounting.
If the valve stem is allowed to remain in the up position (towards the actuator) during actuator mounting, it can interfere
with the actuator stem during mounting. It is possible to damage valve stem threads or bend the valve stem. Be sure the
valve stem is pushed down (into the valve body), away from the actuator while mounting.

It may be necessary to apply a temporary loading pressure to the actuator to move the actuator stem away from the
valve during installation.
If it is not possible to provide a temporary loading pressure, be very careful when lowering the actuator over the valve
stem to prevent damage to valve stem and threads.

WARNING
When moving the actuator stem with loading pressure applied, exercise caution to keep hands and tools out of the
actuator stem travel path. If the loading pressure is accidently disconnected, personal injury and property damage may
result if something is caught between the actuator stem and other control valve parts.

1. Provide a vise or some other method of supporting the valve and the weight of the actuator during assembly. For
direct or reverse acting valves, push the valve stem down away from the actuator while mounting the actuator.
2. Screw the stem locknuts all the way onto the valve stem. With the concave side of the travel indicator disk (key 34)
facing the valve, install the travel indicator disk on the valve stem. (Note: The travel indicator disk is not used with
size 87 actuators.)
3. Lift or hoist the actuator onto the valve bonnet:
a. For size 87 actuators: Slowly lower the actuator down onto the valve while guiding the valve stem into the
opening in the end of the actuator stem (see figure 4). Once the actuator is in place, insert the cap screws and
tighten the hex nuts, securing the actuator to the bonnet.
b. For all other size actuators:
D Slowly lower the actuator down onto the valve. As the yoke passes over the end of the valve stem, place the yoke
locknut over the valve stem. (Note: On small size actuators, it may be necessary to remove the indicator disk and
re-install it while lowering the actuator onto the valve because the disk will not go through the actuator yoke
opening).
D Continue to lower the actuator while guiding the valve stem into the opening in the end of the actuator stem until
the actuator is in place (see figure 4).
D Screw the yoke locknut onto the valve bonnet and tighten the locknut.
4. Do not connect the actuator stem to the valve stem at this time. Whenever the actuator is installed on the valve, it
is recommended that you perform the Bench Set Spring Adjustment procedures below, to verify that the actuator is
still adjusted correctly.

Instruction Manual

667 Size 30-76 and 87 Actuators

D100310X012

November 2013

Figure 3. Actuator-Mounting Components for Size 30 through 70 Actuators
VENT ASSEMBLY
DIAPHRAGM CASINGS

DIAPHRAGM AND STEM
SHOWN IN DOWN POSITION
DIAPHRAGM
PLATE
LOADING AIR
PRESSURE CONNECTION
ACTUATOR SPRING
ACTUATOR STEM
SPRING SEAT
SPRING ADJUSTOR
STEM CONNECTOR
YOKE
TRAVEL INDICATOR DISK
INDICATOR SCALE
W0364-1

VALVE STEM
YOKE LOCK NUT

MATCH LINE
FOR
ACTUATOR

YOKE BOSS DIAMETER
BONNET

TYPICAL VALVE
(REFER TO
VALVE MANUAL)

W6199-1

Discussion of Bench Set
The bench set pressure values are used to adjust the initial compression of the actuator spring with the valve-actuator
assembly “on the bench.” The correct initial compression ensures that the valve-actuator assembly will function
properly when it is put into service and the proper actuator diaphragm operating pressure is applied.
The bench set values are established with the assumption that there is no packing friction. When attempting to adjust
the spring in the field, it is very difficult to ensure that there is no friction being applied by “loose” packing.
Accurate adjustment to the bench set range can be made during the actuator mounting process by making the
adjustment before the actuator is connected to the valve (see the Spring Verification Procedure).

Instruction Manual

667 Size 30-76 and 87 Actuators

D100310X012

November 2013

Figure 4. Bench Set Adjustment

SPRING
ADJUSTER
ACTUATOR STEM
UPPER BENCH
SET LOADING
PRESSURE 3

RATED VALVE
TRAVEL MEASURE

NOTES:
1
THE LOWER PSIG LOADING PRESSURE (MARKED
ON NAMEPLATE) WHERE THE FIRST MOVEMENT OF
ACTUATOR STEM IS DETECTED.
2
MARK THIS POINT WITH TAPE OR A MARKER.
3
THE UPPER PSIG LOADING PRESSURE RETRACTS
ACTUATOR STEM.
MEASURE DISTANCE OF TRAVEL. IT SHOULD EQUAL
4
THE TRAVEL SHOWN ON THE NAMEPLATE.

LOWER BENCH
SET PRESSURE
MARK 4
VALVE STEM

MARK VALVE
STEM HERE 2

LOWER BENCH SET
LOADING PRESSURE

50A8379-C
B2429-1

Spring Verification
Ensure that the actuator diaphragm is at the bottom of its travel as shown in figure 4 and not connected to the valve.
(Note: Some spring compression is required to move the diaphragm to the bottom of its travel.)
Also, provide a certified pressure gauge that will accurately read the diaphragm pressure from 0 through 0.3 bar (5
psig) above the upper operating range pressure marked on the nameplate. Apply loading pressure to the diaphragm.
Stroke the actuator a few times to ensure that the pressure gauge is working correctly, and that the actuator is
functioning properly.

CAUTION
To prevent actuator damage, it is important to ensure that the actuator stem is stroking smoothly and not exhibiting
binding or excessive friction between the actuator stem and the bushing (key 7). Binding or excessive friction could be an
indicator of incorrect assembly or damaged parts.

Key numbers are shown in figures 6, 7, and 8.

Note
For 667 actuators installed on push-down-to-close (direct acting) valves with fail-close action, the valve plug seat is the limit for
downward travel and the actuator is the limit for upward (away from the valve) movement.
For 667 actuators installed on push-down-to-open (reverse acting) valves with fail-open action, the actuator down stop is the limit
for downward movement, and the valve seat is the limit for upward (away from the valve) movement.
Ensure the correct Spring Verification procedure is followed for the type of valve on which the 667 actuator is installed.

667 Size 30-76 and 87 Actuators

Instruction Manual

November 2013

D100310X012

For Push Down to Close (Direct Acting) Valves
1. If not already accomplished, push the valve stem down away from the actuator to the closed position.
2. Set the diaphragm loading pressure to 0.3 bar (5 psig) over the upper operating range pressure. The travel stop cap
screw (key 12) should be contacting the upper diaphragm casing.
3. Slowly decrease the pressure towards the upper bench set pressure, as indicated on the nameplate, while checking
for the first linear movement of the actuator stem.

Note
Before turning the spring adjuster on size 70, 76, or 87 actuators, assemble the stem connector around the actuator stem and the
anti-rotating lug on the yoke. Mark the actuator stem as a visual reference to verify that stem rotation does not occur. Remove the
stem connector before rechecking the bench set.

4. If movement occurs before or after the upper bench set pressure is reached, adjust the spring adjuster (see figure
4). Thread the adjuster up or down on the actuator stem until the actuator stem movement is first detected at the
upper bench set pressure. (Note: You may need to lower the loading pressure to reduce spring compression,
allowing the spring adjuster to turn.)
5. Be sure the spring adjuster is adjusted to meet the requirements of step 4 above.
6. Slowly decrease diaphragm loading pressure to the lower bench set pressure, as indicated on the nameplate. This
will extend the actuator stem toward the valve. Mark the end of the actuator stem on a nearby surface using tape or
some other method.
7. Slowly increase the diaphragm loading pressure until the upper bench set pressure is reached. Again, the travel stop
cap screw (key 12) should be against the upper diaphragm casing.
8. Measure the distance between the mark or tape to the end of the actuator stem. This distance should match the
rated travel indicated on the nameplate.
9. If the measured travel matches the nameplate travel, bench set is complete. Proceed to the Installing the Stem
Connector Assembly subsection.
10. If the measured travel is not exact, consider the spring free-length and spring rate tolerances may produce a
slightly different bench set than specified. Contact your Emerson Process Management sales office for assistance.

For Push Down to Open (Reverse Acting) Valves
1. If not already accomplished, push the valve stem down away from the actuator to the open position. Later, when
installing the connector, pull up the valve stem to the closed position.
2. Set the diaphragm loading pressure to a value less than the lower bench set pressure, as indicated on the
nameplate, or near zero. The down travel stops (key 77) should be contacting the yoke.
3. Slowly increase the pressure towards the lower bench set pressure while checking for the first linear movement of
the actuator stem.

Instruction Manual
D100310X012

667 Size 30-76 and 87 Actuators
November 2013

4. If movement occurs before or after the lower pressure is reached, adjust the spring adjuster (see figure 4). Thread
the adjuster up or down on the actuator stem until the actuator stem movement is first detected at the lower bench
set pressure.
5. Apply the upper bench set pressure indicated on the nameplate to the diaphragm. This will retract the actuator
stem away from the valve. Mark the end of the actuator stem on a nearby surface using tape or some other method.
6. Slowly decrease the diaphragm pressure until the lower bench set pressure is applied. Again, the down travel stops
(key 77) should be against the yoke.
7. Measure the distance between the mark or tape to the end of the actuator stem. This distance should match the
rated travel indicated on the nameplate.
8. If the measured travel matches the nameplate travel, bench set is complete. Proceed to the Installing the Stem
Connector Assembly subsection.
9. If the measured travel is not exact, consider the spring free-length and spring rate tolerances may produce a slightly
different bench set than specified. Contact your Emerson Process Management sales office for assistance.

Installing the Stem Connector Assembly
When installing the stem connector assembly (key 31), the actuator and valve stem threads should engage the
threads of the stem connector by a distance equal to the diameter of the stem.

WARNING
Install the stem connector securely before a positioner is mounted to the actuator and pressurized, using only a
regulator-controlled air supply, not the positioner, to move the actuator stem.
To avoid personal injury or property damage, keep hands and tools out of the actuator stem travel path while applying
loading pressure to move the actuator stem in the following steps.

CAUTION
To avoid damaging the seating surfaces, do not rotate the valve plug while it is seated. Exercise care while installing the
stem connector assembly to avoid damage to the valve plug stem and valve stem threads.

Note
Replacement stem connectors are an assembly of two stem connector halves, cap screws, and a spacer between the connector
halves. Remove the spacer and discard it, if present, before clamping the actuator and valve stems together. Use only a mated pair
of stem connectors.

1. If necessary, push the valve stem down so that the valve plug is touching the seat ring on direct-acting valves. For
reverse-acting valves, pull the stem up to the closed position. Always start with the valve plug on the seat.
2. If necessary, screw the valve stem locknuts down, away from the connector location. For all actuators except size
87, ensure that the travel indicator disk (key 34) is on top of the locknuts.
3. Adjust the diaphragm pressure to the lower bench set pressure (or, the upper bench set pressure for reverse-acting
valves.) This should be the same pressure used in the Spring Verification steps, and it is marked on the nameplate.
4. Place the stem connector half with the threaded holes approximately half way between the actuator and valve
stems, and align the actuator stem and valve stem with threads from both stems mated root-to-crest with the stem
connector. If the threads from one of the stems do not fully align with the stem connector, a slight change to

667 Size 30-76 and 87 Actuators

Instruction Manual

November 2013

D100310X012

loading pressure may be necessary to align the threads. Refer to figures 6, 7, and 8 to help locate the connector
position.

CAUTION
Incomplete engagement of either the valve stem or actuator stem in the stem connector can result in stripped threads or
improper operation. Be sure that the length of each stem clamped in the stem connector is equal to or greater than one
diameter of that stem. Damage to threads on either stem or in the stem connector can cause the parts to be replaced
prematurely. Do not loosen the cap screws when the stem connector has spring or loading pressure force applied.

5. Install the other half of the stem connector and insert the cap screws and tighten them while ensuring even spacing
between the stem connector halves on all sides. If installing a positioner, also attach the feedback bracket at the
same time.

CAUTION
Over-tightening the valve stem locknuts can make disassembly difficult.

6. Screw the valve stem locknuts up against the stem connector for the size 87 actuator. For all other actuator sizes,
screw the valve stem locknuts up until the indicator disk contacts the bottom of the stem connector. Do not
overtighten the locknuts.
7. Slowly stroke the valve from fully open to fully closed and verify full rated travel is achieved.
Be sure that the valve is in the closed position. Loosen the screws on the travel indicator scale (key 32), and align it with
the travel indicator disk (key 34). Stroke the valve full travel to ensure that the travel matches the rated valve travel on
the nameplate. If valve travel is not correct, repeat the stem connector procedure.

Friction Discussion
If you are attempting to adjust the bench set after the actuator is connected to the valve and the packing tightened,
you must take friction into account. Make the spring adjustment so full actuator travel occurs at the bench set values
(a) plus the friction force divided by the effective diaphragm area with increasing diaphragm pressure or (b) minus the
friction force divided by the effective diaphragm area with decreasing diaphragm pressure.
If the stem connector assembly has been installed, the valve friction may be determined by the following procedure:
1. Install a pressure gauge in the actuator loading pressure line that connects to the actuator diaphragm casing.

Note
Steps 2 and 4 require that you read and record the pressure shown on the pressure gauge.

2. Increase the actuator diaphragm pressure and read the diaphragm pressure as the actuator reaches a travel
position in the rated travel of the valve that does not contact a travel stop. Make a reference mark on the travel
indicator scale using tape or some other method at this point.
3. Increase the actuator diaphragm pressure until the actuator is at a travel position greater than the position
referenced in step 2 using the reference point to identify first movement.

Instruction Manual

667 Size 30-76 and 87 Actuators

D100310X012

November 2013

4. Decrease the actuator diaphragm pressure and read the diaphragm pressure as the actuator returns to the position
referenced in step 2.
The difference between the two diaphragm pressure readings is the change in the diaphragm pressure required to
overcome the friction forces in the two directions of travel.
5. Calculate the actual friction force:
Friction
Force, =
pounds

0.5

Difference
in pressure
readings, psig

Effective
diaphragm area,
inches2

Refer to table 1 for the effective diaphragm area.
It is difficult to rotate the spring adjustor (key 74, figures 6, 7, and 8) when the full actuator loading pressure is applied
to the actuator. Release the actuator loading pressure before adjusting. Then re-apply loading pressure to check the
adjustment.

BENCH SET
0.6

LOWER
BENCH SET
PRESSURE

RANGE OF
DEADBAND 1
OPENING
VALVE

3
0

1.0

BENCH SET
0.6

LOWER
BENCH SET
PRESSURE

RANGE OF
DEADBAND 1
CLOSING
VALVE

0.2

0
OPEN

MID RANGE

CLOSED

VALVE TRAVEL

DIRECT ACTING VALVE
NOTE:
1

0.2

OPENING
VALVE

UPPER
BENCH SET 15
PRESSURE

DIAPHRAGM PRESSURE, BAR

1.0

DIAPHRAGM PRESSURE, PSIG

CLOSING
VALVE

UPPER
BENCH SET 15
PRESSURE

DIAPHRAGM PRESSURE, BAR

DIAPHRAGM PRESSURE, PSIG

Figure 5. Typical Valve Response to Deadband

CLOSED MID RANGE

OPEN

VALVE TRAVEL

REVERSE ACTING VALVE

DEADBAND IS CAUSED BY FRICTION.

A6763-2

Deadband Measurement
Deadband is caused by packing friction, unbalanced forces, and other factors in the control valve assembly. Deadband
is the range a measured signal can vary without initiating a response from the actuator (see figure 5). Each actuator
spring has a fixed spring rate (force divided by compression). You have verified that the right spring was installed in the
actuator by completing the Spring Verification steps.
Deadband is one factor that affects the control valve assembly operation during automatic loop control. The control
loop tolerance for deadband varies widely depending on the loop response. Some common symptoms of the
deadband being too wide are no movement, a “jump” movement, or oscillating movements of the actuator during
automatic loop control. The following steps are provided to determine the span of deadband. The percent of
deadband is helpful in troubleshooting problems with the process control loop.
1. Start at a pressure near the lower bench set pressure, slowly increase pressure until the valve is approximately at
mid-travel. Note this pressure reading.

667 Size 30-76 and 87 Actuators

Instruction Manual
D100310X012

November 2013

2. Slowly decrease pressure until movement of the valve stem is detected, and note this pressure.
3. The difference between these two pressures is deadband, in psi.
4. Calculate the percent of deadband by:
Deadband, psi
Deadband = Deadband, psi
Bench Set Span, psi

= nn %

Loading Connection
Key number locations are shown in figures 6, 7, and 8, unless otherwise noted.
The loading pressure connections are made at the factory if the valve, actuator, and positioner come as a unit. Keep
the length of tubing or piping as short as possible to avoid transmission lag in the control signal. If a volume booster,
valve positioner, or other accessory is used, be sure that it is properly connected to the actuator. Refer to the
positioner instruction manual or other manuals as necessary. For actuators shipped separately or whenever the
actuator pressure connections are installed, use the following steps:
1. Connect the loading pressure piping to the NPT internal connection in the side of the yoke (key 73).
2. For size 70 and 87 actuators, if necessary, remove the 1/4 NPT bushing if a 1/2 NPT internal connection is needed to
increase connection size. The connection can be made with either piping or tubing.
3. Cycle the actuator several times to be sure that the valve stem travel is correct when the correct pressure ranges are
applied to the diaphragm.
4. If valve stem travel appears to be incorrect, refer to the Bench Set Spring Adjustment procedures at the beginning
of this section. Do not place the valve in service if it is not reacting correctly to diaphragm loading pressure changes.

Maintenance
Actuator parts are subject to normal wear and must be inspected regularly and replaced when necessary. The
frequency of inspection and replacement depends on the severity of service conditions.

WARNING
Avoid personal injury or property damage from sudden release of process pressure or uncontrolled movement of parts.
Before performing any maintenance operations:
D Do not remove the actuator from the valve while the valve is still pressurized.
D Always wear protective gloves, clothing, and eyewear when performing any maintenance operations to avoid personal
injury.
D Disconnect any operating lines providing air pressure, electric power, or a control signal to the actuator. Be sure the
actuator cannot suddenly open or close the valve.
D Use bypass valves or completely shut off the process to isolate the valve from process pressure. Relieve process pressure
from both sides of the valve. Drain the process media from both sides of the valve.
D Vent the power actuator loading pressure and relieve any actuator spring pre-compression.
D Use lock-out procedures to be sure that the above measures stay in effect while you work on the equipment.
D The valve packing box may contain process fluids that are pressurized, even when the valve has been removed from the
pipeline. Process fluids may spray out under pressure when removing the packing hardware or packing rings, or when
loosening the packing box pipe plug.

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667 Size 30-76 and 87 Actuators
November 2013

D Check with your process or safety engineer for any additional measures that must be taken to protect against process
media.

The maintenance instructions are divided into several sections: Actuator, Top-Mounted Handwheel Assembly
(Adjustable Down Travel Stop), Side-Mounted Handwheel Assembly for Size 34 through 60 Actuators (Manual
Actuator), Side-Mounted Handwheel Assembly for Size 70, 76 and 87 Actuators (Manual Actuator), and
Casing-Mounted Travel Stops.

Actuator
This procedure describes how the actuator can be completely disassembled and assembled. When inspection or
repairs are required, disassemble only those parts necessary to accomplish the job; then, start the assembly at the
appropriate step.
Key numbers are shown in figures 6, 7, or 8, unless otherwise noted. Figure 6 shows the size 30 through 60 actuators,
figure 7 shows the size 70 actuator, and figure 8 shows the size 87 actuator.

Actuator Disassembly
Isolate the control valve from the line pressure, release pressure from both sides of the valve body, and drain the
process media from both sides of the valve. Also shut off all pressure lines to the power actuator, release all pressure
from the actuator. Use lock-out procedures to be sure that the above measures stay in effect while you work on the
equipment.
1. Remove the tubing or piping from the connection in the top of the yoke (key 73).
2. Turn the spring adjuster (key 74) counterclockwise (toward the valve body) until all spring compression is relieved.

WARNING
To avoid personal injury due to the sudden uncontrolled movement of parts, do not loosen the stem connector cap screws
when the stem connector has spring force applied to it.

3. If necessary, remove the actuator from the valve body by separating the stem connector (key 31). Loosen the stem
locknuts for the size 87 actuator, and remove the stem connector nuts. For all other sizes, separate the stem
connector by loosening the stem locknuts (keys 69 and 75) and unscrewing the two stem connector cap screws.
4. Unscrew the spring adjuster (key 74) from the actuator stem (key 144). Also lift the spring seat and spring (key 19
and 18) out of the yoke.
5. Remove the diaphragm casing cap screws and nuts (keys 13 and 14), and lift off the upper diaphragm casing (key
1).

CAUTION
Be careful during disassembly to avoid damaging the O-rings (key 8).

6. Remove the following connected parts: the diaphragm (key 3), upper diaphragm plate (key 4), spacer (key 2), cap
screw (key 12), lower diaphragm plate (key 71), and actuator stem (key 144). Be careful when pulling the threads of
the actuator stem through the seal bushing (key 7) to avoid damaging the O-rings (key 8).

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7. Remove the cap screw (key 12) to separate the parts of this assembly.
8. To remove the seal bushing, remove the snap ring (key 72), and lift out the bushing. Inspect, and if necessary,
replace O-rings (keys 8 and 9).
9. Remove cap screws (key 30), and take off the lower diaphragm casing (key 64) and the gasket (key 70, size 30
through 60 and 76) or O-ring (key 70, size 70 or 87). If necessary, the down travel stops (key 77) can be removed.
Table 2. Actuator Assembly Recommended Torque Values
DESCRIPTION, KEY
NUMBER

ACTUATOR SIZE

THREAD SIZE, INCH

30 to 60 and 76

TORQUE
N•m

Lbf•ft

3/8-16

70 and 87

1/2-13

3/8-24

34 and 40

1/2-20

45 to 76 and 87

3/4-16

183

135

34 and 40

1/2-13

45 to 60

5/8-11

163

120

MO U-bolt nut, key 147

34 and 40

3/8-16

MO U-bolt nut, key 144

45 to 60

3/8-16

Diaphragm casing, key 14(1)

30 to 76 and 87

3/8-24

Casing to yoke, key 30(1)

Travel stop, key 12

MO U-bolt nut, key 170

1. Observe tightening pattern and procedure described in the appropriate Actuator Assembly section.

Actuator Assembly
Refer to table 2 as appropriate.
1. Coat the O-rings (key 70, sizes 70 and 87) with lithium grease (key 237), or, coat the gasket with lithium grease (key
237). Place a new gasket or O-ring (key 70) on the yoke (key 73). Position the lower diaphragm casing (key 64) on
the yoke and align the holes. Insert the cap screws (key 30) and tighten evenly in a crisscross pattern to 41 NSm (30
lbfSft) for size 30-60 and 76 actuators or 95 NSm (70 lbfSft) for size 70 and 87 actuators. If down travel stops (key 77)
were removed, insert and tighten them.
2. Coat the O-rings (keys 8 and 9) with lithium grease (key 237) and place the O-rings in the seal bushing (key 7).
3. Fill the seal bushing with lithium grease (key 237), slide the bushing into the yoke (key 73), and install the snap ring
(key 72).

CAUTION
Be careful during assembly to avoid damaging the O-rings (key 8).

4. Assemble the actuator stem (key 144), lower diaphragm plate (key 71), diaphragm (key 3), upper diaphragm plate
(key 4), and the travel stop cap screw and spacer (keys 12 and 2). Coat the cap screw threads with lithium grease
(key 237). Tighten the cap screw (key 12) to the appropriate torque as shown in table 2. Place this assembly in the
actuator. Take care when pushing the actuator stem through the seal bushing so that the threads do not damage
the O-rings.

Note
When you replace actuator diaphragms in the field, take care to ensure the diaphragm casing bolts are tightened to the proper
load to prevent leakage, but not crush the material. Perform the following tightening sequence with a manual torque wrench for
size 30-76 and 87 actuators.

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667 Size 30-76 and 87 Actuators
November 2013

CAUTION
Over-tightening the diaphragm cap screws and nuts (keys 13 and 14) can damage the diaphragm. Do not exceed 27 NSm
(20 lbfSft) torque.

Note
Do not use lubricant on these bolts and nuts. Fasteners must be clean and dry.

5. Install the upper diaphragm casing (key 1), and install the cap screws and nuts (keys 13 and 14). Tighten the
diaphragm cap screws and nuts in the following manner.
6. The first four bolts tightened should be diametrically opposed and 90 degrees apart. Tighten these four bolts to 13
NSm (10 lbfSft).
7. Tighten the remaining bolts in a clockwise, criss-cross pattern to 13 NSm (10 lbfSft).
8. Repeat this procedure by tightening four bolts, diametrically opposed and 90 degrees apart, to a torque of 27 NSm
(20 lbfSft).
9. Tighten the remaining bolts in a clockwise, criss-cross pattern to 27 NSm (20 lbfSft).
10. After the last bolt is tightened to 27 NSm (20 lbfSft), all of the bolts should be tightened again to 27 NSm (20 lbfSft)
in a circular pattern around the bolt circle.
11. Once completed, no more tightening is recommended.
12. Install the actuator spring (key 18) and spring seat (key 19). Apply anti-seize lubricant (key 239) to the threads of
the actuator stem and to the surface of the spring adjuster (key 74) that contacts the spring seat. Thread the spring
adjuster onto the actuator stem.
13. Mount the actuator onto the valve in accordance with the procedures in the Installation section.

Top-Mounted Handwheel Assembly (Adjustable Down Travel Stop)
Actuator key numbers are shown in figures 6, 7, and 8. And, top-mounted handwheels are shown in figures 9, 11, 12,
and 13.

A top-mounted handwheel assembly (figures 9, 11, 12, and 13) is usually used as an adjustable down travel stop to
limit full extension of the actuator stem. Turning the handwheel counterclockwise pulls the extension rod (key 150,
figures 9, 11, and 12) up, retracting the actuator stem.
Instructions are given below for complete disassembly and assembly. Perform the disassembly only as far as necessary
to accomplish the required maintenance; then, begin the assembly at the appropriate step.

Note
For size 70 and 87 actuators with handjack bars (figure 13) it is recommended that the handjack bar (key 58) be removed when
not in use and the handwheel cap (key 247) be installed for weather protection of the internal components.

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Disassembly for Top-Mounted Handwheel
1. Bypass the control valve, reduce loading pressure to atmospheric, and remove the tubing or piping from the
connection in the top of the yoke (key 73, figures 6, 7, and 8).
2. Turn the handwheel (key 58) clockwise so that the handwheel assembly is not causing any spring compression.
3. Turn the actuator spring adjuster (key 74) to relieve all the compression from the spring (key 18).
4. If servicing just the thrust bearing, races, and handwheel screw (keys 180, 181, and 160), use the following steps:
D Remove the cap and take out the cotter pin. Remove the castle nut, bearing retainer, thrust bearing, and races (keys
247, 167, 166, 180, and 181).
D Use the handwheel to remove the handwheel screw (key 160) from the handwheel body (key 148).
D If necessary, remove the extension rod (key 150) at this time. Most maintenance procedures do not require the rod
to be removed.
D Clean and inspect all parts or replace parts as necessary. Upon re-assembly, lubricate handwheel threads, bearings,
and races with anti-seize lubricant (key 239).
D Lubricate and re-install the handwheel screw into handwheel body (key 148). Lubricate and replace the races,
bearing, and retainer (keys 181, 180, and 182). Replace the castle nut (key 166), tighten it, and insert the cotter pin
(key 167). Replace the handwheel cap (key 247).
5. For size 30 through 60 and 76 actuator handwheels (figures 9 and 11):
D Remove the cap screws (key 161). Make sure that the guide plate can turn between the handwheel body and the
mounting plate (keys 157, 148 and 158).
D Remove the cap (key 247) and cotter pin (key 167). Remove the castle nut (key 166) and, if necessary, unscrew the
extension rod (key 150). Remove the rod, the handwheel body (key 148), and the attached parts.
D Remove the hex nuts and cap screws (keys 14 and 13, figures 6, 7, and 8) from the diaphragm casings. Lift off the
upper diaphragm casing (key 1) and the mounting plate (key 158).
D Turn the handwheel (key 58) to remove the handwheel screw (key 160) from the handwheel body (key 148).
Remove the retaining ring (key 60) if the handwheel (key 58) must be separated from the handwheel screw.
D If necessary, perform other actuator maintenance before returning to the following assembly steps.
6. For size 70 and 87 actuator handwheels (figures 12 and 13):
D Remove the cap (key 247). Take out the cotter pin (key 167) and remove the castle nut, the bearing retainer, and
thrust bearing (keys 166, 182, 181, and 180). It is not necessary to remove the extension rod (key 150) at this time.
D Remove the hex nuts and cap screws (keys 14 and 13, figures 6, 7, and 8) from the diaphragm casings. Lift off the
upper diaphragm casing (key 1), handwheel body (key 148) and attached parts.
D If travel stops (key 152) are used, note and record their position relative to the cap screws (key 154) for use in
assembly. Remove the travel stops and cap screws, and remove either the mounting plate (key 158, figure 12) or
the handwheel body (key 148, figure 12) and attached parts.
D Turn the handwheel (key 58) to remove the handwheel screw (key 160) from the handwheel body (key 148).
Remove the retaining ring (key 60) if the handwheel (key 58) must be separated from the handwheel screw.

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November 2013

D If necessary, perform other actuator maintenance before returning to the following assembly steps.

Assembly for Top-Mounted Handwheel
For size 30 through 60 and 76 actuator handwheels:
Refer to figures 9 and 11 for top-mounted handwheel assemblies.
1. If it was removed, slide the handwheel (key 58) onto the end of the handwheel screw (key 160), and snap the
retaining ring (key 60) into place. Also, install the guide post (key 150) if it was removed.
2. Generously coat the threads of the handwheel screw (key 160) with anti-seize lubricant (key 239). Turn the screw
into the handwheel body (key 148).
3. Install the mounting plate (key 158) to the diaphragm casing (key 1, figures 6, 7, and 8) with the cap screws (key
154). Finger tighten the screws.
4. If travel stops were used, install the travel stops to their original positions as recorded in the proceeding
Disassembly steps. Tighten the screws and travel stops.

CAUTION
Over-tightening the diaphragm cap screws and nuts (keys 13 and 14) can damage the diaphragm. Do not exceed 27 NSm
(20 lbfSft) torque.

Note
Do not use lubricant on these bolts and nuts. Fasteners must be clean and dry.

5. Position the diaphragm casing (key 1, figures 6, 7, and 8), mounting plate (key 158), travel stops (key 152), if used,
and cap screws (key 154) on the diaphragm. Install the cap screws and hex nuts (keys 13 and 14, figures 6, 7, and 8)
and tighten in the following manner.
6. The first four bolts tightened should be diametrically opposed and 90 degrees apart. Tighten these four bolts to 13
NSm (10 lbfSft).
7. Tighten the remaining bolts in a clockwise, criss-cross pattern to 13 NSm (10 lbfSft).
8. Repeat this procedure by tightening four bolts, diametrically opposed and 90 degrees apart, to a torque of 27 NSm
(20 lbfSft).
9. Tighten the remaining bolts in a clockwise, criss-cross pattern to 27 NSm (20 lbfSft).
10. After the last bolt is tightened to 27 NSm (20 lbfSft), all of the bolts should be tightened again to 27 NSm (20 lbfSft)
in a circular pattern around the bolt circle.
11. Once completed, no more tightening is recommended.
12. If necessary, screw the extension rod (key 150 into the connector (key 27). Slide the guide plate (key 157) onto the
extension rod (key 150). For size 45 through 76, place the spacer (key 253) on top of the guide plate (key 157). If

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necessary, replace the extension rod (key 150). Slide the handwheel body (key 148) over the extension rod, position
the handwheel body on the spacer (key 253), align the holes, and insert and tighten the cap screws (key 161).
13. Lubricate and install the thrust bearings (keys 181 and 180), install the bearing retainer (key 182), install the castle
nut (key 166) on the extension rod. Do not overtighten the castle nut on the bearing. Install the cotter pin (key
167). Replace the cap (key 247).
14. Refer to the Assembly portion of the Actuator maintenance section.
For size 70 and 87 actuators handwheels (figures 12 and 13):
Refer to figure 12 for top-mounted handwheel assemblies and figure 13 for handjack bar assemblies.
1. If removed, slide the handwheel (key 58) onto the end of the handwheel screw (key 160), and snap the retaining
ring (key 60) into place.
2. Generously coat the threads of the handwheel screw (key 160) with anti-seize lubricant (key 239). Turn the screw
into the handwheel body (key 148).
3. If necessary, install the extension rod (key 150) into the connector (key 27) and tighten it. Position the handwheel
body (key 148) on the diaphragm casing (key 1, figures 6, 7, and 8), and align the holes. Insert the cap screws (key
154). Finger tighten the screws.
4. If travel stops were used, return the travel stops to their original positions as recorded in the proceeding
Disassembly steps. Tighten the screws and travel stops.

CAUTION
Over-tightening the diaphragm cap screws and nuts (keys 13 and 14) can damage the diaphragm. Do not exceed 27 NSm
(20 lbfSft) torque.

Note
Do not use lubricant on these bolts and nuts. Fasteners must be clean and dry.

5. Slide the extension rod (key 150) into the handwheel screw (key 160), and position the diaphragm casing (key 1,
figures 6, 7, and 8) with the attached parts on the diaphragm. Install the cap screws and hex nuts (keys 13 and 14,
figures 6, 7, and 8) and tighten in the following manner.
6. The first four bolts tightened should be diametrically opposed and 90 degrees apart. Tighten these four bolts to 13
NSm (10 lbfSft).
7. Tighten the remaining bolts in a clockwise, criss-cross pattern to 13 NSm (10 lbfSft).
8. Repeat this procedure by tightening four bolts, diametrically opposed and 90 degrees apart, to a torque of 27 NSm
(20 lbfSft).
9. Tighten the remaining bolts in a clockwise, criss-cross pattern to 27 NSm (20 lbfSft).
10. After the last bolt is tightened to 27 NSm (20 lbfSft), all of the bolts should be tightened again to 27 NSm (20 lbfSft)
in a circular pattern around the bolt circle.

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667 Size 30-76 and 87 Actuators
November 2013

11. Once completed, no more tightening is recommended.
12. Lubricate and install the thrust bearings (keys 180 and 181), install the bearing retainer (key 182), install the castle
nut (keys 166) on the extension rod. Do not overtighten the castle nut on the bearing. Install the cotter pin (key
167). Replace the cap (key 247).
13. Refer to the Assembly portion of the Actuator maintenance section.

Side-Mounted Handwheel Assembly for Size 34 through 60 Actuators
A side-mounted handwheel assembly (figures 14 and 15) is usually used as a manual actuator. This design is frequently
used to drive the valve open or closed under loading conditions. Turning the handwheel clockwise past the neutral
position always closes a push-down-to-close valve. A pair of levers (key 146, figure 14) on a handwheel assembly close
the valve by moving the valve stem.
Instructions are given below for disassembly and assembly. Perform the disassembly only as far as necessary to
accomplish the required maintenance; then begin the assembly at the appropriate step.

Disassembly for Side-Mounted Handwheel (34-60)
1. If desired, the handwheel assembly can be removed from the actuator yoke. To do this, remove the nuts (keys 147
and 170) from the U-bolts and J-bolts (keys 166 and 143) that hold the assembly to the yoke for the size 34 and 40
actuators. Remove the nuts (keys 170 and 144) from the U-bolts (keys 166 and 143) that hold the assembly to the
yoke for the size 45 through size 60 actuators.
2. Remove the retaining ring (key 154), and drive out the lever pivot pin (key 153).
3. Two screws (key 156) hold the right- and left-hand levers (key 146) together. Remove the screw from the top of the
levers so that the levers will drop down out of the assembly. Disassemble further, if necessary, by removing the
other screw.
4. Remove the screw (key 161) and pointer mounting bolt (key 159, not shown) located behind the pointer (key 160).
5. Remove the nut (key 54), lockwasher (key 150), and washer (key 149), and take off the handwheel (key 51). Be
careful not to lose the small ball (key 55) and spring (key 56).
6. Unscrew the bearing retainer (key 136) after loosening the locking set screw (key 168, not shown for the size 34
and 40 actuators).
7. Pull the screw assembly (key 145) out of the handwheel body. The operating nut (key 132) will come out with the
screw. Also, remove the bushing (key 151) on sizes 34 and 40.
8. If required, remove the bearings (key 152), one from the bearing retainer and the other from the handwheel body.

Assembly for Side-Mounted Handwheel (Sizes 34-60)
1. Pack the bearings (key 152) with anti-seize lubricant (key 244). Insert one bearing and the bushing (key 151) in the
handwheel body (key 142) as shown in figure 14 or 15. The bushing is not used in a handwheel assembly for size 45
through 60 actuators.
2. Coat the screw threads with anti-seize lubricant (key 244), and thread the operating nut onto the screw. Slide the
second bearing (key 152) onto the screw, and insert the end of the screw into either the bushing (key 151) as shown
in figure 14 or 15 or into the bearing.
3. Thread the bearing retainer (key 136) into the body (key 142). Completely tighten the bearing retainer, and then
loosen it one-quarter turn. Tighten the set screw (key 168, not shown for the size 34 and 40 actuators) to hold the
bearing retainer in place.
4. Coat the groove in the handwheel body (key 142) with lithium grease (key 241). Insert the spring (key 56) and ball
(key 55) into the handwheel (key 51). Holding the ball and spring in the handwheel, put the handwheel (key 51), the
washer (key 149), the lockwasher (key 150), and the hex nut (key 54) on the end of the screw (key 145). Tighten the
hex nut.

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5. Position the pointer mounting bolt (key 159, not shown) and the pointer (key 160) as shown in figure 14 or 15.
Insert and tighten the screw (key 161).
6. Assemble the two levers (key 146) with the cap screws (key 156) for handwheel assemblies for size 45, 50, and 60
actuators or with the machine bolts (key 156) for handwheel assemblies on size 34 and 40 actuators.
7. If the handwheel assembly was removed from the yoke, remount the handjack assembly to the yoke using the
dowel pins for alignment. For the size 34 and size 40 actuators, position the U-bolts and J-Bolts (keys 166 and 143)
on the yoke, and hand-tighten the hex nuts (keys 170 and 147) to hold the handwheel assembly in position. For the
size 45 through size 60 actuators, position the U-bolts (keys 166 and 143) on the yoke, and hand-tighten the hex
nuts (keys 170 and 144) to hold the handwheel assembly in position. Tighten the nuts (key 144 for the size 30 and
size 40 actuators , key 158 for the size 45 through size 60 actuators). For the size 34 and size 40 actuators, finish
tightening the U-bolt nuts to 81 N•m [60 lbf•ft] (key 170) and 41 N•m [30 lbf•ft] (key 147). For the size 45
through size 60 actuators ,finish tightening the U-bolt nuts to 163 N•m [120 lbf•ft] (key 170) and 41 N•m [30
lbf•ft] (key 144). Be sure the handwheel assembly remains flat against the mounting pad and perpendicular to the
yoke.
8. Position the levers (key 146) as shown in figure 14 or 15. Insert the lever pivot pin (key 153), and snap the retaining
ring (key 154) onto the lever pivot pin.

Side-Mounted Handwheel Assembly for Size 70, 76, and 87 Actuators
A side-mounted handwheel assembly (figure 16) is usually used as a manual actuator. Turning the handwheel
clockwise past the neutral position always closes the valve body. A sleeve (key 123, figure 16) on a handwheel
assembly for a size 70, 76 or 87 actuator opens the valve body by moving the valve stem.
Instructions are given below for complete disassembly and assembly. Perform the disassembly only as far as necessary
to accomplish the required maintenance; and then begin the assembly at the appropriate step.

Disassembly for Side-Mounted Handwheel (Sizes 70, 76, and 87)
1. Bypass the control valve. Reduce the loading pressure to atmospheric. Disconnect the loading pressure tubing or
piping at the yoke.
2. Remove the cover band (key 87), and relieve spring compression by turning the spring adjuster (key 74)
counterclockwise.
3. Remove the cap screws and nuts (keys 13 and 14) and lift off the upper diaphragm casing (key 1).
4. Remove the travel stop screw (key 12) and spacer (key 2), and take off the diaphragm plate (key 4), the diaphragm
(key 3), and the lower diaphragm plate (key 71).
5. Unscrew the cap screws (key 90) and remove the following connected parts: the lower diaphragm casing (key 64),
the O-ring (key 70), spring case adaptor (key 89), the seal bushing, O-rings, and snap ring (keys 7, 8, 9, and 72).
6. Remove the snap ring (key 72), and slide the seal bushing and O-rings (keys 7, 8, and 9) out of the spring case
adaptor (key 89).
7. Take out the actuator spring (key 18).
8. Remove the stem connector (key 31) and stem connector cap screws.
9. Pull the actuator stem (key 144) up and out of the yoke. The spring seat (key 19), spring adjuster (key 74), thrust
bearing (key 128), and the pinned adjusting screw (key 131) will come out with the actuator stem.
10. Turn the handwheel so that the lower sleeve (key 123) extends out of the bottom of the yoke. DO NOT move the
neutral indicator scale (key 125).
11. Loosen two set screws (key 121), and unscrew the bearing retainer flange (key 45). Take out the worm gear and
two thrust bearings (key 132), one on each side of the gear.
12. The worm shaft (key 51) and associated parts can be disassembled, if desired, by first removing the handwheel nut
(key 127) and the handwheel (key 58). Do not lose the small ball (key 141) and spring (key 142).

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November 2013

13. Loosen the set screw (key 52) for each worm shaft retainer (keys 48 and 49). Unscrew the two worm retainers
(keys 48 and 49). The ball bearings (key 50) will come out with the retainers.

Assembly for Side-Mounted Handwheel (Sizes 70, 76, and 87)
1. The front and back worm retainers (keys 48 and 49) each have a slot in their threads for a set screw (key 52). Pack
the ball bearings (key 50) with anti-seize lubricant (key 239), and insert one ball bearing in the back worm retainer
(key 49) as shown in figure 16.
2. Thread the back bearing retainer and ball bearing (keys 49 and 50) into the yoke. Align the slot in the bearing
retainer with the set screw hole in the yoke, insert the set screw (key 52), and tighten it.
3. Coat the worm shaft (key 51) threads with anti-seize lubricant (key 239), and slide the shaft into the yoke so that
the end of the shaft fits snugly into the back bearing retainer.
4. Insert the bearing in the front bearing retainer (key 49), and thread the retainer and ball bearing into the yoke. Align
the slot in the retainer with the hole in the yoke, insert the set screw (key 52), and tighten it.
5. Put the spring and ball (keys 141 and 142) in the handwheel (key 58). Slide the handwheel onto the worm shaft (key
51). Thread the hex nut (key 127) onto the worm shaft.
6. Pack the two needle bearings (key 132) and coat the worm gear (key 44) threads with anti-seize lubricant (key 239).
Insert the key (key 122), the bearings, and the worm gear in the yoke (key 73) as shown in figure 16.
7. Slots are cut in the threads of the bearing retainer flange (key 45). Thread the flange into the yoke so that the slots
and the holes for the set screws (key 121) align. Insert the screws, and tighten them.
8. The lower sleeve (key 123) has a milled groove in one end. Coat the sleeve threads with anti-seize lubricant (key
239), slide the end of the lower sleeve with the groove into the bearing retainer flange, turn the handwheel, and
feed the sleeve through the worm gear so that the slot in the lower sleeve engages the key (key 122) in the yoke.
Continue turning the handwheel until the lower sleeve protrudes 81 mm (3.19 inches) below the surface of the
yoke. The bottom of the lower sleeve should be even with the bottom of the extension on the neutral indicator.
9. Pack the thrust bearing (key 128) with anti-seize lubricant (key 239). Slide the actuator stem (key 144) and the
attached adjusting screw (key 131), pin (key 130), thrust bearing (key 128), spring seat (key 19), and spring adjuster
(key 74) into the yoke. The lower end of the stem slides through the lower sleeve (key 123) and the lower sleeve
slides into the adjusting screw (key 131), as shown in figure 16.
10. Position the actuator stem (key 144) against the valve stem. Clamp both stems between the two halves of the
stem connector (key 31), and be sure the threads are engaged properly on both stems. The stem connector should
not be closer than 3.2 mm (1/8 inches) to the lower sleeve when the actuator stem is in the retracted position. This
adjustment will provide approximately 3.2 mm (1/8 inches) of free travel of the lower sleeve in either direction for
manual operation. Fasten the halves together with the cap screws.
11. Put the actuator spring (key 18) in the yoke on the spring seat (key 19).
12. Coat the O-rings (keys 8 and 9) with lithium grease (key 237), and insert them in the seal bushing (key 7). Slide the
seal bushing and O-rings into the spring case adaptor (key 89).
13. Install the snap ring (key 72).
14. Slide the seal bushing and O-rings (keys 7, 8, and 9) over the actuator stem (key 144), and position the spring case
adaptor (key 89), lower diaphragm casing (key 64), and O-ring (key 70) on the yoke.
15. Insert and tighten the cap screws (key 90).
16. Slide the lower diaphragm plate (key 71), the diaphragm (key 3) with the patterned side up, the diaphragm plate
(key 4), the spacer (key 2), and the cap screw (key 12) on the actuator stem (key 144). Tighten the cap screw.
17. Put the diaphragm casing (key 1) on the diaphragm. Align the holes in the diaphragm (key 3) and the diaphragm
casings (keys 1 and 64).

667 Size 30-76 and 87 Actuators
November 2013

Instruction Manual
D100310X012

CAUTION
Over-tightening the diaphragm cap screws and nuts (keys 13 and 14) can damage the diaphragm. Do not exceed 27 NSm
(20 lbfSft) torque.

Note
Do not use lubricant on these bolts and nuts. Fasteners must be clean and dry.

18. Install the cap screws and hex nuts (keys 13 and 14) and tighten in the following manner.
19. The first four bolts tightened should be diametrically opposed and 90 degrees apart. Tighten these four bolts to 13
NSm (10 lbfSft).
20. Tighten the remaining bolts in a clockwise, criss-cross pattern to 13 NSm (10 lbfSft).
21. Repeat this procedure by tightening four bolts, diametrically opposed and 90 degrees apart, to a torque of 27 NSm
(20 lbfSft).
22. Tighten the remaining bolts in a clockwise, criss-cross pattern to 27 NSm (20 lbfSft).
23. After the last bolt is tightened to 27 NSm (20 lbfSft), all of the bolts should be tightened again to 27 NSm (20 lbfSft)
in a circular pattern around the bolt circle.
24. Once completed, no more tightening is recommended.
25. Return the actuator to service after completing the Loading Connection procedure in the Installation section and
the procedures in the Adjustments section.

Casing-Mounted Travel Stops
Note
If repeated or daily manual operation is expected, the actuator should be equipped with a side-mounted handwheel rather than a
casing-mounted travel stop or top-mounted handwheel. The side-mounted handwheel is designed for more frequent use as
manual operator.

Casing-mounted adjustable travel stops (shown in figures 17 through 21) are available to limit travel in the down
direction (extending the actuator stem) or in the up direction (retracting the actuator stem). The travel stop in figure
17 is a down travel stop, the travel stop in figure 18 is an up and down travel stop, and the travel stops in figures 19, 20,
and 21 are up travel stops.
Use the locknuts (key 151, figures 17 and 18), stem (key 150, figure 19), handwheel (key 58, figure 20) or cap screw
(key 177, figure 21) to set the point at which the travel stop limits travel. Be sure to tighten the locknuts and replace
the cap (key 149, figures 17 and 19; key 247, figure 18) after setting the travel stop.
Instructions are given below for disassembly and assembly. Perform the disassembly only as far as necessary to
accomplish the required maintenance; then, begin the assembly at the appropriate step.
Key numbers are shown in figures 17 through 21.
1. Remove the cap (key 149 or 247) if the travel stop uses one. For down travel stops, loosen the locknuts (key 151,
figures 17 and 18) so that the stop is not causing any spring compression.

Instruction Manual

667 Size 30-76 and 87 Actuators

D100310X012

November 2013

2. Bypass the control valve, reduce loading pressure to atmospheric, and remove the tubing or piping from the
connection on top of the yoke (key 73, figures 6, 7, and 8).
3. For down travel stops, turn the spring adjuster (key 74, figures 6, 7, and 8) out of the yoke toward the stem
connector (key 31) to relieve all the compression in the spring (key 18).
4. For style 11 travel stops (figure 18), unscrew the cap screws (key 161), and make sure that the guide plate (key 157)
can turn between the handwheel body (key 148) and the mounting plate (key 158).
5. Use a wrench on the nuts (key 151) to unscrew the extension rod (key 150). Remove the rod, the handwheel body
(key 148), and the attached parts.
6. Unscrew the hex nuts and cap screws (keys 14 and 13, figures 6, 7, and 8) from the diaphragm casings. Lift off the
upper diaphragm casing (key 1, figures 6, 7, and 8) and, for the style 11 travel stop, the mounting plate (key 158).
For styles 10, 12 and 13, the travel stop assembly will be removed with the casing.
7. Note and record the position of travel stops (key 152) relative to the cap screws (key 154) for use in assembly.
Unscrew the travel stops and cap screws, and remove either the mounting plate (key 158) or the handwheel body
(key 148) and attached parts.
8. Separate the stem (key 150) and screw (key 160, figure 18) from the handwheel body.
9. Before reassembling, lubricate parts indicated by key 239 in figures 17 through 21. Use anti-seize lubricant (key
239).
10. Reassemble parts in the reverse order of removal.
11. When replacing the cap screws (key 154) and, if used, the travel stops (key 152), be sure to return them to their
original position as recorded in step 7.

CAUTION
Over-tightening the diaphragm cap screws and nuts (keys 13 and 14), figures 6, 7, and 8 can damage the diaphragm. Do
not exceed 27 NSm (20 lbfSft) torque.

12. Install the cap screws and nuts (keys 13 and 14, figures 6, 7, and 8) and finger tighten. Tighten the diaphragm cap
screws and nuts to 27 NSm (20 lbfSft) torque in a crisscross pattern.
13. Return the spring adjuster (key 74, figure 6, 7, and 8) to its original position. Re-adjust the travel stop.

Parts Ordering
Each actuator has a serial number stamped on the nameplate. Always mention this number when corresponding with
your Emerson Process Management sales office regarding technical information or replacement parts. Also, reference
the complete 11-character part number of each needed part as found in the following Parts Kits and Parts List sections.

WARNING
Use only genuine Fisher replacement parts. Components that are not supplied by Emerson Process Management should
not, under any circumstances, be used in any Fisher valve, because they may void your warranty, might adversely affect the
performance of the valve, and could cause personal injury and property damage.

Instruction Manual

667 Size 30-76 and 87 Actuators

D100310X012

November 2013

Parts Kits

Parts List

Actuator Repair Kits
Parts kit includes keys 8, 9, and 70. O-ring material is nitrile, and
gasket material is composition.
Key

Description
Size 30
Sizes 34 & 40
Sizes 45 through 60
Sizes 70 & 87
Size 76

Part Number
R667X000302
R667X000402
R667X000502
R667X000702
R667X000762

Side-Mounted Handwheels
Retrofit Kits
Key

Note
Part numbers are shown for recommended spares only. For part
numbers not shown, contact your Emerson Process Management sales
office.

Description

Actuator Assembly
Key
1
2
3*

Part Number

Retrofit Kit includes parts to add a Side-Mounted Handwheel.
Size 34 Push-Down-To-Close
30A8778X0E2
Size 34 Push-Down-To-Open
30A8778X0F2
Size 40 Push-Down-To-Close
30A8778X0G2
Size 40 Push-Down-To-Open
30A8778X0H2
Size 45 & 46 Push-Down-To-Close
40A8779X0A2
Size 45 & 46 Push-Down-To-Open
40A8779X0B2
Size 50 & 60 Push-Down-To-Close
40A8779X0C2
Size 50 & 60 Push-Down-To-Open
40A8779X0D2

4
7*

Top-Mounted Handwheels
Retrofit Kits
Retrofit Kit includes parts to add a Top-Mounted
Handwheel. Kit number 1 includes the handwheel
assembly only. Kit number 2 includes Kit number 1
and a new diaphragm case that is required to
mount the handwheel assembly.
Key

Description
Kit 1
Size 30
Sizes 34
Size 40
Sizes 45 & 50
Sizes 46, 60, & 76
Sizes 70 & 87
Kit 2
Size 30
Size 34
Size 40
Sizes 45 & 50
Sizes 46, 60, & 76
Sizes 70 & 87

Part Number
30B3940X102
30B3940X022
30B3940X042
33B9224X012
33B9224X012
CV8060X0012

30B3940X052
30B3940X062
30B3940X092
33B9224X022
33B9224X032
CV8060X0022

12
13
14

Description
Upper Diaphragm Casing
Travel Stop Spacer
Diaphragm
Molded Nitrile/Nylon
Size 30
Sizes 34 & 40
Sizes 45 & 50
Sizes 46, 60 & 76
Sizes 70 & 87
Molded Silicone/Polyester
Size 30
Sizes 34 & 40
Sizes 45 & 50
Sizes 46, 60 & 76
Sizes 70 & 87
Upper Diaphragm Plate
Bushing, Seal
Brass
Size 30
Sizes 34 & 40
Sizes 45 through 60
Sizes 70, 76 & 87
S41600 [416 stainless steel (SST)]
Size 30
Sizes 34 & 40
Sizes 45 through 60
PTFE w/25% Glass
Sizes 70, 76 & 87
O-Ring
Nitrile
Size 30
Sizes 34 & 40
Sizes 45 through 60
Sizes 70, 76 & 87
Fluorocarbon
Size 30
Sizes 34 & 40
Sizes 45 through 60
Sizes 70, 76, & 87
O-Ring
Nitrile
Sizes 30 through 40
Sizes 45 through 87
Fluorocarbon
Sizes 30 through 40
Sizes 45 through 87
Screw, Cap, hex hd
Hex hd Cap Screw
Hex Nut

*Recommended spare parts

Part Number

Qty

2E800002202
2E669902202
2E859602202
2E859802202
2N130902202

1
1
1
1
1

18B2713X012
18B2713X022
18B2713X032
18B2713X042
18B2713X052

1
1
1
1
1

1E791214012
1E682814012
1E845714012
1N1316X0052

1
1
1
1

1E7912X0012 1
1E6828X0012 1
1E8457X0012 1
1N1316X0042 1

1E5914X0052
1D237506992
1C5622X0022
1E736906992

2
2
2
2

1E5914X0062
1D237506382
1N285406382
1N1633X0012

2
2
2
2

1C415706992 1
1E845806992 1
1C4157X0032 1
1E8458X0022 1

Instruction Manual

667 Size 30-76 and 87 Actuators

D100310X012

Key
17
18
19
27
30
31
32
33
33
34
39
40
64
69
70*

70*

71
72
73
74
75
76
77
78
79
81
82
83
89
90
102
144
227

Description
Vent Assembly
Spring
Seat, Lower Spring
Extension Rod Conn
Hex hd Cap Screw
Stem Connector Assembly
Travel Indicator Scale
Screw, Self Tapping
Screw, Mach, Fill hd
Disk, Travel Indicator
Nameplate
Screw, Drive
Lower Diaphragm Casing
Nut, Hex, Jam
Gasket
Composition [up to 232C (450F)]
Sizes 30 through 40
Sizes 45 through 60 & 76
O-Ring
Nitrile
Size 70 & 87
Lower Diaphragm Plate
Ring, Snap
Yoke
Spring Adjuster
Nut, Hex
Nut, Speed, Twin
Stop, Travel
Bushing, Pipe, Hex
Screw, Mach, Flat Hd
Screw, Mach, Rd Hd
Indicator, Travel, Adaptor
Washer, Plain
Spring Case Adaptor
Screw, Cap
Plug, Pipe, Hex Hd
Actuator Stem
Washer, Plain

*Recommended spare parts

November 2013

Part Number

Qty

Key

Description

228
237

Stem Disk Spacer
Lubricant, lithium grease
not furnished with actuator
Lubricant, anti-seize
not furnished with actuator
Caution Nameplate

239
254

Top-Mounted Handwheel
(figures 9, 10, 11, 12, and 13)
1E801204022 1
1E845404022 1

1D269106992 1

Key

Description

58
60
148
150
152
154
156
157
158
159
160
161
166
167
178
179
180
181
182
183
239

Handwheel / Handjack Bar
Retainer Ring
Handwheel Body
Extension Rod
Up Travel Stop
Cap Screw
Vent Assembly
Guide Plate
Mounting Plate
Lock Nut
Handwheel Screw
Cap Screw
Castle Nut
Cotter Pin
Machine Screw
Lockwasher
Thrust Bearing
Thrust Race
Bearing Retainer
Pipe Nipple
Lubricant, anti-seize
not furnished with handwheel
Handwheel Cap
Spacer, Handjack

247
253

667 Size 30-76 and 87 Actuators

Figure 6. Fisher 667 Actuator Sizes 30 through 60

APPLY LUBRICANT OR SEALANT
50A8379-C

Instruction Manual
D100310X012

November 2013

Instruction Manual

667 Size 30-76 and 87 Actuators

D100310X012

November 2013

Figure 7. Fisher 667 Size 70 and 76 Actuator

APPLY LUBRICANT
50A8598-E

667 Size 30-76 and 87 Actuators

Figure 8. Fisher 667 Size 87 Actuator

APPLY LUBRICANT
50A8600-E

Instruction Manual
D100310X012

November 2013

Instruction Manual

667 Size 30-76 and 87 Actuators

D100310X012

November 2013

Figure 9. Top-Mounted Handwheel Assembly for Size 30 through 40 Actuators

APPLY LUBRICANT
NOTE:
THE TOP MOUNTED HANDWHEEL IS NOT DESIGNED FOR USE UNDER HEAVY LOAD OR FREQUENT USE.
30B3940-C

Figure 10. Top-Mounted Handwheel Assembly, Style P2 for Size 45, 50, 60, and 76 Actuators

239

APPLY LUBRICANT
30B3942-A

667 Size 30-76 and 87 Actuators
November 2013

Figure 11. Top-Mounted Handwheel Assembly for Size 45-76 Actuators

APPLY LUBRICANT
33B9224-B

Instruction Manual
D100310X012

667 Size 30-76 and 87 Actuators
November 2013

Figure 12. Top-Mounted Handwheel Assembly for Size 70 and 87 Actuators

CV8060-J

APPLY LUBRICANT

Figure 13. Top-Mounted Handjack Bar Assembly for Size 70 and 87 Actuators

GE61626-A

APPLY LUBRICANT

NOTE:
THE TOP MOUNTED HANDJACK BAR SHOULD BE REMOVED WHEN NOT IN USE AND THE HANDWHEEL CAP INSTALLED FOR WEATHER PROTECTION OF INTERNAL COMPONENTS.

667 Size 30-76 and 87 Actuators

Figure 14. Side Mounted Handwheel Assembly for Size 34 and 40 Actuators

APPLY LUBRICANT
30A8778-D

Figure 15. Side-Mounted Handwheel Assembly for Size 45 through 60 Actuators

40A8779-D

Instruction Manual
D100310X012

November 2013

APPLY LUBRICANT

Instruction Manual

667 Size 30-76 and 87 Actuators

D100310X012

November 2013

Side-Mounted Handwheel,
Size 34-60 (figures 14 and 15)

Side-Mounted Handwheel,
Size 70, 76 and 87 (figure 16)

Key

Description

Key

Description

51
54
55
56
132
136
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
166
167
168
169
170
177
178
241

Handwheel
Hex Jam Nut
Ball
Spring
Operating Nut
Bearing Retainer
Handwheel Body
Mounting Bolts
Hex Nut
Handwheel Screw
Lever & Pin Assembly
Hex Jam Nut
Dowel Pin
Washer
Lockwasher
Bushing
Ball Bearing
Lever Pivot Pin
Retaining Ring
Spacer
Screw
Lockwasher
Hex Nut
Pointer Mounting Bolt
Pointer
Machine Screw
Indicator Plate (Aluminum)
Cap Screw
U-Bolt
Guide Bolt
Set Screw
Grease Fitting
Hex Nut
Spring Cap
Machine Screw
Lubricant, lithium grease
Not furnished with handwheel
Lubricant, anti-seize
Not furnished with handwheel

29
38
44
45
48
49
50
51
52
57
58
87
89
90
121
122
123
125
127
128
129
130
131
132
133
141
142
237

Handgrip
Handgrip Bolt
Worm Gear
Bearing Retainer Flange
Back Worm Retainer
Front Worm Retainer
Ball Bearing
Worm Shaft
Set Screw
Grease Fitting
Handwheel
Cover Band Ass'y
Spring Case Adaptor
Cap Screw
Set Screw
Key
Lower Sleeve
Handwheel Indicator
Handwheel Cap
Needle Bearing
Needle Bearing Race
Roll Pin
Spring Adjusting Screw
Needle Bearing
Needle Bearing Race
Ball
Spring
Lubricant, lithium grease
Not Furnished with Handwheel
Lubricant, anti-seize
Not Furnished with Handwheel
Yoke Extension

244

239
245

667 Size 30-76 and 87 Actuators
November 2013

Figure 16. Size 70, 76, and 87 Actuator with Side Mounted Handwheel Assembly

PART NOT SHOWN: 57
APPLY LUBRICANT
E0871

Instruction Manual
D100310X012

Instruction Manual

667 Size 30-76 and 87 Actuators

D100310X012

Casing-Mounted Travel Stops
(figures 17 through 21)
Key

Description

58
102
127
148
149
150
150
151
152
153

Handwheel
Plug, Pipe
Hex Nut
Travel Stop Body
Travel Stop Cap
Extension Rod
Travel Stop Stem
Hex Jam Nut
Up Travel Stop
Nut, Hex

Figure 17. Style 10 Down Travel Stop - For All Sizes
(Casing Mounted)

APPLY LUBRICANT
BV8094-B

November 2013

Key

Description

154
155
156
157
158
159
160
161
162
177
184
237
239
247
248

Screw, Cap, Hex Hd
Washer
Vent
Guide Plate
Mounting Plate
Nut, Travel Stop
Screw, Handwheel
Screw, Cap, Hex Hd
Washer
Travel Stop Screw
Nipple, Pipe, NPT
Lubricant, lithium grease
Lubricant, anti-seize
Travel Stop Cap
Mounting Plate

Figure 18. Style 11 Up Or Down Travel Stop For Sizes 30 to 60 and 76 (Casing Mounted)

APPLY LUBRICANT
38A1212-B

Instruction Manual

667 Size 30-76 and 87 Actuators

D100310X012

November 2013

Figure 19. Style 12 Up Travel Stop (Casing Mounted)

Figure 20. Style 13 Up Travel Stop - For Sizes 30 to 60
and 76, Size 30 Shown (Casing Mounted)

APPLY LUBRICANT

28A1204-B

Figure 21. Style 14 Up Travel Stop (Casing Mounted)

APPLY LUBRICANT
28A1208-B

AV8096-B

Neither Emerson, Emerson Process Management, nor any of their affiliated entities assumes responsibility for the selection, use or maintenance
of any product. Responsibility for proper selection, use, and maintenance of any product remains solely with the purchaser and end user.
Fisher and easy-e are marks owned by one of the companies in the Emerson Process Management business unit of Emerson Electric Co. Emerson Process
Management, Emerson, and the Emerson logo are trademarks and service marks of Emerson Electric Co. All other marks are the property of their respective
owners.
The contents of this publication are presented for informational purposes only, and while every effort has been made to ensure their accuracy, they are not
to be construed as warranties or guarantees, express or implied, regarding the products or services described herein or their use or applicability. All sales are
governed by our terms and conditions, which are available upon request. We reserve the right to modify or improve the designs or specifications of such
products at any time without notice.
Emerson Process Management
Marshalltown, Iowa 50158 USA
Sorocaba, 18087 Brazil
Chatham, Kent ME4 4QZ UK
Dubai, United Arab Emirates
Singapore 128461 Singapore

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Emerson Fisher 657 And 667 Installation Instructions

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