Emerson Process Management 667 Users Manual

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2015-02-06

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D100311X012
Type 667 Diaphragm Actuators
Size 80 and 100
Contents
Introduction 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Scope of Manual 1. . . . . . . . . . . . . . . . . . . . . . . . .
Description 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Specifications 3. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Maximum Pressure Limitations 3. . . . . . . . . . . . .
Installation 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Actuator Mounting 4. . . . . . . . . . . . . . . . . . . . . . . .
Loading Connection 4. . . . . . . . . . . . . . . . . . . . . . .
Adjustments 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Size 80 Actuator Spring 5. . . . . . . . . . . . . . . . . . .
Travel 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Spring 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Size 100 Actuator Spring 5. . . . . . . . . . . . . . . . .
Maintenance 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Size 80 Actuator Maintenance 7. . . . . . . . . . . . . .
Disassembly 7. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Assembly 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Size 100 Actuator Maintenance 10. . . . . . . . . . . .
For Actuators without the
Top-Loaded Option 11. . . . . . . . . . . . . . . . . . .
For Actuators with the
Top-Loaded Option 14. . . . . . . . . . . . . . . . . . .
Size 80 Side-Mounted Handwheel 16. . . . . . . . .
Disassembly 16. . . . . . . . . . . . . . . . . . . . . . . . . . .
Assembly 16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Size 80 Hydraulic Snubber 17. . . . . . . . . . . . . . . .
Size 100 Top-Mounted Handwheel
(Adjustable Up Travel Stop) 17. . . . . . . . . . . .
Disassembly 17. . . . . . . . . . . . . . . . . . . . . . . . . . .
Assembly 18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Parts Ordering 18. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Parts Kits 18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Parts List 18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Note
Neither Emerson, Emerson Process
Management, nor any of their affiliated
entities assumes responsibility for the
selection, use and maintenance of any
product. Responsibility for the
selection, use, and maintenance of any
product remains with the purchaser
and end-user.
Figure 1. Size 80 Type 667 Actuator
W1950 / IL
Introduction
Scope of Manual
This instruction manual provides information on
installation, adjustment, maintenance, and parts
ordering for the Type 667 actuator in sizes 80 and
100 (figure 1). Refer to separate instruction manuals
for information about other equipment and
accessories used with these actuators.
Instruction Manual
Form 1432
December 2007 667 Size 80 and 100 Actuators
667 Size 80 and 100 Actuators
Instruction Manual
Form 1432
December 2007
2
Table 1. Specifications
SPECIFICATION
ACTUATOR SIZE
SPECIFICATION 80 100
Nominal Effective Diaphragm Area
cm21761 2902
Nominal Effective Diaphragm Area inch2273 450
Yoke Boss Diameters
mm 127 127 178
Yoke Boss Diameters inch 5 5H(1) 7
Acceptable Valve Stem Diameters
mm 25.4 or 31.8 31.8 50.8
Acceptable Valve Stem Diameters inch 1 or 1-1/4 1-1/4 2
Maximum Allowable Output Thrust
N 62,942 200,170
Maximum Allowable Output Thrust lb 14,150(2) 45,000
Maximum Travel
mm 76 102
Maximum Travel inch 3 4
Cast Iron Steel
Maximum Casing Pressure for Actuator Sizing(3) bar 3.1 4.9 6.9
Maximum
Casing
Pressure
for
Actuator
Sizing
psig 45 70 100
Cast Iron Steel
Maximum Excess Diaphragm Pressure(4) bar 1.4 1.4 1.7
Maximum
Excess
Diaphragm
Pressure
psig 20 20 25
Cast Iron Steel
Maximum Diaphragm Casing Pressure(5)(6) bar 4.1 5.5 7.9
Maximum
Diaphragm
Casing
Pressure
psig 60 80 115
Material Temperature Capabilities
_C–40 to 82
Material Temperature Capabilities _F–40 to 180
Pressure Connections 1/4 NPT internal
Approximate Weights Without Handwheel
kg 284 544
Approximate Weights Without Handwheel lb 626 1200
1. Heavy actuator-to-bonnet bolting.
2. 88,075 N (19,800 lb) for steel construction.
3. Maximum diaphragm casing pressure that can be applied to cause travel stop contact. Indicated pressure must not be exceeded at less than full travel.
4. Maximum additional diaphragm casing pressure that can be applied after the travel stop cap screw contacts the upper diaphragm casing.
5. The sum of the pressure required to stroke the valve fully and the excess pressure added when the actuator is against the stop must not exceed these values.
6. 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.
Do not install, operate, or maintain Type 667
actuators without first D being fully trained and
qualified in valve, actuator, and accessory
installation, operation, and maintenance, and D
carefully reading and understanding the contents of
this manual. If you have any questions about these
instructions, contact your Emerson Process
Managementt sales office before proceeding.
Description
The Type 667 actuator is a reverse-acting actuator.
Reverse-acting actuators use air action to lift the
diaphragm (away from the valve), and spring action
opposes the diaphragm action (see figure 2). The
actuator position changes in response to varying
controlled air pressure to the diaphragm. If air
pressure is reduced or lost from the actuator
diaphragm, spring action will extend the actuator
stem. The actuator is often used with control valves
using a pneumatic positioner for air pressure control,
and where fail action will fully open or close the
control valve as the actuator stem extends.
Also, the actuator can be furnished with either a
side-mounted (size 80 only) handwheel assembly or
a top-mounted handwheel (adjustable up travel stop)
(size 100 only). The size 80 side-mounted
handwheel is normally used as an auxiliary manual
actuator. The size 100 top-mounted handwheel is
used as either a travel stop or an auxiliary manual
actuator.
The actuator can be furnished with a top-loading
capability. A top-loaded actuator allows air pressure
to be applied to the top of the diaphragm, aiding the
spring to extend the actuator stem. This air pressure
667 Size 80 and 100 Actuators
Instruction Manual
Form 1432
December 2007
3
Figure 2. Schematic Representation of Type 667 Actuator
DIAPHRAGM
AIR
LIFTS
SPRING
PUSHES
DOWN
ACTUATOR
STEM
TYPE 667 REVERSEĆACTING DIAPHRAGM ACTUATOR
AF3833-A
A6127 / IL
increases valve seat load on valve applications
where additional seat-loading is necessary.
Specifications
Refer to table 1 for Specifications of the Type 667
actuator. See the actuator nameplate for information
about a specific actuator.
WARNING
To avoid personal injury or parts
damage, do not exceed the Maximum
Pressures listed in table 1. Exceeding
any of the maximum pressures can
result in uncontrolled movement of
parts, damage to actuator parts and
the control valve, and loss of control
of the process. Use pressure-limiting
or pressure-relieving devices to
prevent cylinder pressure from
exceeding these limits.
Maximum Pressure Limitations
The casing and diaphragm of Type 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 table 1 for maximum values.
DMaximum 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.
DMaximum 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.
DMaximum Diaphragm Casing Pressure: If the
Maximum Diaphragm Casing Pressure is exceeded,
damage to the diaphragm, diaphragm casing, or
actuator might result. For some actuator sizes, the
maximum casing pressure is the sum of the
maximum stroking pressure added to the maximum
excess pressure. For other actuator sizes, the value
is lower than the sum of the two pressures.
Installation
WARNING
To avoid personal injury or parts
damage, do not exceed the Maximum
Diaphragm Casing Pressure listed in
table 1. The Maximum Diaphragm
Casing Pressure must not produce a
force on the actuator stem greater than
the maximum allowable actuator
output thrust or the maximum
allowable stem load.
Always wear protective gloves,
clothing, and eyewear when
performing any installation operations
to avoid personal injury.
Check with your process or safety
engineer for any additional measures
that must be taken to protect against
process media.
If installing into an existing
application, also refer to the WARNING
at the beginning of the Maintenance
section in this instruction manual.
667 Size 80 and 100 Actuators
Instruction Manual
Form 1432
December 2007
4
When an actuator and valve are shipped together,
the actuator is normally mounted on the valve.
Follow the valve instructions when installing the
control valve in the pipeline. If the actuator is
shipped separately or if it is necessary to mount the
actuator on the valve, perform the following Actuator
Mounting procedures.
For information on mounting valve positioners, refer
to the appropriate valve positioner instruction
manual.
Actuator Mounting
1. Mount the actuator on the valve bonnet. Insert
the cap screws and tighten the hex nuts, securing
the actuator to the bonnet.
2. Screw the valve stem jam nuts (key 69, figures 6
and 7) all the way onto the valve stem threads.
3. Connect an air supply to the lower diaphragm
casing connection.
4. For push-down-to-close valves, be sure the valve
plug is on its seat. Reduce loading pressure to
ensure that the actuator stem is fully extended.
Apply slight loading pressure to retract the stem
approximately 3.2 mm (1/8-inch).
5. For push-down-to-open valves, apply pressure to
ensure that the actuator stem is fully retracted. Be
sure the valve plug is on its seat. On large valve
sizes, this may require the use of a pry bar inserted
through the valve body line opening. If the valve is
installed in a pipeline, the bottom flange (if one is
used) can be removed and the valve plug pushed to
the seat from the bottom opening. Reduce actuator
loading pressure to extend the stem approximately
3.2 mm (1/8-inch).
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 the diameter of that stem.
6. Clamp the actuator and valve plug stems
between the two stem connector halves (key 31,
figures 6 and 7). Insert and tighten the stem
connector cap screws.
7. Thread the stem locknuts against the stem
connector.
8. Align the travel indicator scale (key 32, figures 6
and 7) to show valve position.
WARNING
To avoid personal injury due to the
sudden, uncontrolled movement of
parts, do not loosen the cap screws
when the stem connector has spring
or loading pressure force applied to it.
Loading Connection
Key number locations are shown in figures 6 and 7,
unless otherwise directed.
1. Connect the loading pressure piping to the
connection in the size 80 spring case adaptor
(key 89) or in the size 100 lower diaphragm casing
(key 67).
For top-loaded actuators
1. For size 80, remove the the pipe bushing
(key 78), and connect the loading pressure piping in
its place. For size 100, remove the hex bushing
(key 62) from the upper casing (key 1), and connect
the top loading pressure piping in its place.
2. Remove the 1/4-inch bushing (key 92, figure 6;
key 62, figure 7) to increase connection size, if
necessary. The connection can be made with either
piping or tubing.
3. Keep the length of tubing or piping as short as
possible to avoid transmission lag in the control
signal. If an accessory (such as a volume booster or
valve positioner) is used, be sure that the accessory
is properly connected to the actuator. Refer to the
positioner instruction manual as necessary.
4. Cycle the actuator several times to check that the
valve stem travel is correct and that the travel occurs
when the correct pressure range is applied to the
diaphragm.
5. If valve stem travel is incorrect, refer to the Travel
procedure in the Adjustments section.
6. If the spring pressure range is incorrect, refer to
the Spring procedure in the Adjustments section.
667 Size 80 and 100 Actuators
Instruction Manual
Form 1432
December 2007
5
Adjustments
Travel
Make travel adjustments when the motion observed
during actuator travel is different from the travel
stamped on the actuator nameplate. If the Actuator
Mounting procedure was followed correctly, this
adjustment should not be necessary.
When adjusting travel of a direct-acting valve, put a
slight pressure on the actuator diaphragm. This
moves the valve plug off the seat, reducing the
chance of damaging the valve plug or seat during
adjustments.
1. Back the stem jam nuts (key 69, figures 6 and 7)
away from the stem connector (key 31, figures 6
and 7), and slightly loosen the stem connector cap
screws.
CAUTION
Do not use wrenches or other tools
directly on the valve stem. Damage to
the stem surface and subsequent
damage to the valve packing may
result.
2. Tighten the locknuts together, using a wrench,
then screw the valve stem either into the stem
connector to lengthen travel or out of the stem
connector to shorten travel.
3. Cycle the actuator to check for the specified
travel. If actual travel is not equal to the specified
travel, adjust and check travel until correct. Tighten
the stem connector cap screws when correct travel
is obtained.
4. Raise the travel indicator disk by threading the
stem locknuts against the stem connector.
Spring
Make spring adjustments when the loading pressure
range applied to achieve specified travel is not equal
to the pressure range stamped on the actuator
nameplate. Refer to the Bench Set pressure range
on the nameplate when the valve contains no
pressure and the packing is loosely inserted in the
bonnet. Refer to the Maximum Allowable Supply
pressure on the nameplate when the valve is
controlling the specified pressure drop, and the
packing is tightened to stop leaks around the stem.
Monitor loading pressure carefully when making
adjustments. Do not exceed the pressure
specifications of either the loading regulator or the
actuator casings.
Each actuator spring has a fixed pressure span.
Changing the spring compression shifts the span up
or down to make valve travel coincide with the
loading pressure range.
Size 80 Actuator Spring
Note
Before turning the spring adjuster on
size 80 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.
Remove the cover band (key 87, figure 6), insert a
rod of approximately 12.7 mm (1/2 inch) diameter
into a hole in the spring adjustor (key 74, figure 6),
and rotate the spring adjustor with the rod. Rotating
the adjustor from left to right will increase the loading
pressure required to start actuator stem travel;
opposite rotation will decrease the pressure required
to start travel.
Size 100 Actuator Spring
CAUTION
The actuator must be in the vertical
position when adjusting the spring to
avoid damage to the thrust bearing
(key 86, figure 7) and to properly
position the spacers required for
adjustment.
Remove the shroud plate (key 65, figure 7), and
loosen the jam nut (key 26, figure 7).
For small spring forces, adjustments can be made
by rotating the adjusting nut (key 25, figure 7).
Counterclockwise rotation (when viewed from the
diaphragm casings) of the adjusting nut will increase
the loading pressure required to start actuator stem
travel, and clockwise rotation will decrease the
pressure required to start travel. Tighten the jam nut
when adjustment is complete.
667 Size 80 and 100 Actuators
Instruction Manual
Form 1432
December 2007
6
For high spring forces, it is necessary to use
spacers between the bottom of the yoke and the
spring seat to isolate spring force from the adjusting
nut.
WARNING
To avoid personal injury from the
compressed actuator spring snapping
back to its original length, make and
use the spacers by following the
instructions in the steps below.
1. It is recommended that three spacers be made of
three-inch schedule 80 pipe cut to the appropriate
length specified in step 2. If other than the
recommended material is to be used, be certain that
the spacers are capable of withstanding the spring
force involved. The spacers must also be of equal
length with ends cut squarely.
2. Measure dimension B as shown in figure 3. Cut
the length of the spacers as follows:
a. If it is desired to decrease spring compression,
make the spacers approximately 4.8 mm
(3/16-inch) longer than dimension B.
b. If it is desired to increase spring compression,
make the spacers approximately 4.8 mm
(3/16-inch) shorter than either dimension B plus
the amount of adjustment required or dimension
B plus valve travel, whichever is less.
3. Whenever the total amount of adjustment
required is greater than valve travel, the adjustment
must be made in two or more steps, and the amount
of adjustment taken in each step must be less than
valve travel.
4. Pressure the actuator to attain full travel.
Cautiously insert the spacers at equal intervals
around the spring seat (key 19, figure 7). Spacers
must be seated squarely, or they may slip out of
position. Keeping hands and tools away from the
spring and spring seat, slowly decrease loading
pressure until the spring force holds the spacers
firmly between the spring seat and the bottom of the
yoke.
5. Loosen the jam nut. The adjusting nut can now
be rotated counterclockwise (when viewed from the
diaphragm casings) to increase the loading pressure
required to start actuator stem travel or clockwise to
decrease the pressure required to start travel.
Figure 3. Dimension B for Spring Adjustment
50A2627-C
A1007-1 / IL
SPRING SEAT
ADJUSTING NUT
JAM NUT
B
6. Pressure the actuator to move the spring seat
away from the spacers, and carefully remove the
spacers.
7. Slowly reduce the air pressure to the actuator.
Make sure that the thrust bearing (key 86) is
correctly seated in the spring seat before contact
with the adjustment nut (key 25) is made.
8. If the total adjustment required was greater than
valve travel, repeat the procedure. It will be
necessary to make new spacers using the new
dimension B and the remaining adjustment required
or valve travel, whichever is less. Tighten the jam
nut when adjustment is complete.
Maintenance
WARNING
Avoid personal injury or property
damage from sudden release of
process pressure or bursting of parts.
Before performing any maintenance
operations:
DAlways wear protective gloves,
clothing, and eyewear when
performing any maintenance
operations to avoid personal injury.
667 Size 80 and 100 Actuators
Instruction Manual
Form 1432
December 2007
7
DDisconnect 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.
DUse 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.
DVent the power actuator loading
pressure and relieve any actuator
spring precompression.
DUse lock-out procedures to be
sure that the above measures stay in
effect while you work on the
equipment.
DThe 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.
DCheck with your process or safety
engineer for any additional measures
that must be taken to protect against
process media.
Size 80 Actuator Maintenance
For size 80 actuators, refer to figure 4 for part names
and locations. Key number locations for size 80
actuators are shown in figure 6.
Disassembly
1. Isolate the control valve from the line pressure,
release pressure from both sides of the valve, and
drain the process media from both sides of the
valve. 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.
2. Remove the tubing or piping from the connection
in the top of the spring case adaptor (key 89).
3. If the actuator has a handwheel, rotate the
handwheel to relieve all spring compression.
4. Remove the cover band (key 87). Insert a steel
rod of approximately 12.7 mm (1/2-inch) diameter
into a hole in the spring adjustor (key 74), and rotate
the spring adjustor from right to left until spring
compression is relieved.
WARNING
To avoid personal injury due to the
sudden, uncontrolled movement of
parts, do not loosen the cap screws on
the stem connector (key 31) when
spring force is applied.
5. If necessary, the entire actuator assembly may
be removed from the valve by unscrewing the cap
screws from the stem connector (key 31) and
removing actuator-to-bonnet bolting.
6. Unscrew the diaphragm casing cap screws and
nuts (keys 13 and 14), and lift off the upper
diaphragm casing (key 1).
7. Unscrew the diaphragm cap screw (key 12),
remove the spacer, upper diaphragm plate,
diaphragm, and lower diaphragm plate (keys 2, 4, 3,
and 71).
Note
Standard and top-loaded
constructions use the same key
numbers for parts. The parts look
different, but they use the same
assembly and disassembly sequence.
See figure 4, Size 80 Actuator
Construction for location of parts.
8. Unscrew the cap screws (key 30), and remove
the lower diaphragm casing (key 64).
9. For actuators without a snubber:
a. Unscrew the spring case adaptor cap screws
and nuts (keys 90 and 91), and remove the
adaptor (key 89) from the actuator.
b. Remove the snap ring and seal bushings
(keys 72 and 7). Inspect, and if necessary, obtain
a replacement seal bushing (key 7). Replace the
seal bushing O-rings (keys 8 and 9) as required.
Lubricate with lithium grease (key 237) lubricant.
c. Remove the actuator spring (key 18). Unscrew
the cap screws from the stem connector (key 31),
and remove the stem connector. Remove the
stem (key 144) and attached spring adjustor,
thrust bearing, and spring seat (keys 74, 86,
and 19).
667 Size 80 and 100 Actuators
Instruction Manual
Form 1432
December 2007
8
10. For actuators with a snubber (see figure 8):
WARNING
To avoid personal injury due to the
sudden, uncontrolled movement of
parts, ensure the actuator spring is not
under compression before removing
the travel stop.
a. Remove the travel stop (key 84). Be certain
there is not compression in the actuator spring
(key 18). If the actuator was removed from the
valve, secure the stem connector (key 31) to the
actuator stem (key 144) to prevent the stem from
turning while unscrewing the stem and piston
assembly (key 23).
b. Using a wrench on the wrench flats near the
top of the stem and piston assembly, unscrew the
stem and piston assembly from the actuator
stem.
c. Unscrew the cap screws (key 106), and
remove the cylinder (key 93) and attached parts.
11. To disassemble snubber:
a. Remove the retaining rings, cylinder heads,
and stem and piston assembly (keys 95, 94,
and 23).
b. Replace packing and O-rings (keys 118, 119,
96, 107, and 120).
c. Unscrew the spring case adaptor cap screws
and nuts (keys 90 and 91), and remove the
adaptor (key 89) from the actuator.
12. Remove the actuator spring and spring seat
(keys 18 and 19).
13. Unscrew the cap screws and nuts (keys 88
and 91), and remove the spring case (key 85).
Note
In figure 8, the cap screws (key 88) on
units with side-mounted handwheels
do not use hex nuts (key 91).
14. Remove the spring adjustor (key 74) and the
attached thrust bearing (key 86).
15. Remove the cap screws (key 252), yoke
bushing retainer (key 251), 2 halves of the split yoke
bushing (key 249), and yoke bushing holder
(key 250).
16. Refer to the size 80 actuator assembly
procedures. Carefully clean and inspect all parts,
and obtain any replacement parts required for
reassembly.
Assembly
See figure 4, Size 80 Actuator Construction for
location of parts.
1. Coat the threads of the stem (key 144) with
lithium grease lubricant (key 237). Install the spring
adjustor (key 74) and thrust bearing. Pack the
bearing (key 86) with lithium grease lubricant.
2. Mount the spring case (key 85) to the yoke
(key 73) using cap screws and hex nuts (keys 88
and 91).
Note
Units with a side-mounted handwheel
do not use hex nuts (key 91).
3. Install the spring adjustor, thrust bearing, and
spring seat (keys 74, 86 and 19) onto the actuator
stem (key 144). Slide the stem into the spring case
(key 85).
4. Align the spring seat (key 19) on the spring
adjustor (key 74), and slide the actuator spring
(key 18) squarely onto the spring seat.
5. Mount the spring case adaptor (key 89) to the
spring case (key 85) using cap screws and hex nuts
(keys 90 and 91).
6. For actuators with a snubber (see figure 8),
install the cylinder (key 93) and attached parts with
cap screws (key 106). Slide the stem and piston
assembly (key 23) into the cylinder and thread onto
the actuator stem (key 144). Attach the travel stop
(key 84), if one is used, to the stem and piston
assembly.
7. For actuators without a snubber, install the
seal bushing (key 7) into the spring case adaptor
(key 89) followed by the snap ring (key 72). Replace
the seal bushing O-rings (keys 8 and 9) as required.
8. Coat the gasket (key 70) with lithium grease
lubricant (key 237). Position the lower diaphragm
casing (key 64) on the spring case adaptor, and
secure with cap screws (key 30).
9. Mount the lower diaphragm plate, diaphragm,
upper diaphragm plate, and, if used, spacer
(keys 71, 3, 4, and 2) on the actuator stem
667 Size 80 and 100 Actuators
Instruction Manual
Form 1432
December 2007
9
Figure 4. Size 80 Actuator Construction
CAP SCREW (KEY 12)
SPACER (KEY 2)
UPPER DIAPHRAGM
CASE (KEY 1)
DIAPHRAGM (KEY 3)
LOWER DIAPHRAGM
PLATE (KEY 71)
CAP SCREW (KEY 30)
GASKET (KEY 70)
TRAVEL STOP (KEY 84)
SEAL BUSHING (KEY 7)
VENT ASSEMBLY (KEY 17)
UPPER DIAPHRAGM
PLATE (KEY 4)
CAP SCREW (KEY 13)
HEX NUT (KEY 14)
LOWER DIAPHRAGM
CASE (KEY 64)
PIPE BUSHING (KEY 92)
SNAP RING (KEY 72)
O-RING (KEY 9)
O-RING (KEY 8)
SPACER (KEY 2)
UPPER DIAPHRAGM
PLATE (KEY 4)
DIAPHRAGM (KEY 3)
LOWER DIAPHRAGM
PLATE (KEY 71)
TRAVEL STOP (KEY 84)
PIPE BUSHING (KEY 78)
CAP SCREW (KEY 12)
STANDARD DIAPHRAGM CONSTRUCTION
TOP LOADED DIAPHRAGM CONSTRUCTION
50A8597-D
50A8599-C
C0772 / IL
(key 144), and secure using the cap screw (key 12).
Coat the cap screw threads with lithium grease
(key 237). Tighten the cap screw (key 12) to 544
NSm (400 lbfSft).
Note
Standard and top-loaded
constructions use the same key
numbers for parts. The parts look
different, but they use the same
assembly and disassembly sequence.
See figure 4, Size 80 Actuator
Construction.
10. Position the upper diaphragm casing (key 1) on
the diaphragm (key 3), and align the holes.
Note
When you replace actuator
diaphragms in the field, take care to
ensure the diaphragm casing cap
screws are tightened to the proper
load to prevent leakage, but do not
crush the material. Perform the
following tightening sequence with a
manual torque wrench for size 80 and
100 actuators.
CAUTION
Do not use lubricant on these cap
screws and nuts. Fasteners must be
clean and dry.
Overtightening the diaphragm casing
cap screws and nuts can damage the
667 Size 80 and 100 Actuators
Instruction Manual
Form 1432
December 2007
10
diaphragm. Do not exceed 68 NSm (50
lbfSft) torque.
11. Insert the cap screws (key 13) into the
diaphragm casing, and tighten the hex nuts (key 14)
in the following manner. The first four hex nuts
tightened should be diametrically opposed and 90
degrees apart. Tighten these four hex nuts
to 34 NSm (25 lbfSft).
12. Tighten the remaining hex nuts in a clockwise,
crisscross pattern to 34 NSm (25 lbfSft).
13. Repeat this procedure by tightening four hex
nuts, diametrically opposed and 90 degrees apart, to
a torque of 68 NSm (50 lbfSft).
14. Tighten the remaining hex nuts in a clockwise,
crisscross pattern to 68 NSm (50 lbfSft).
15. After the last hex nut is tightened to 68 NSm (50
lbfSft), all of the hex nuts should be tightened again
to 68 NSm (50 lbfSft) in a circular pattern around the
bolt circle.
16. Once completed, no more tightening is
recommended.
17. For size 80 actuators without a manual operator,
slide the following parts over the bottom of the stem;
yoke bushing holder (key 250), two split yoke
bushings (key 249), and yoke bushing retainer
(key 251). Secure into place with 4 cap screws
(key 252). Before inserting the bushing halves,
lightly coat with lithium grease (key 237) lubricant.
18. Mount the actuator on the valve in accordance
with the procedures in the Installation section.
Size 100 Actuator Maintenance
For size 100 actuators, refer to figure 5 for part
names and locations. Key number locations for Size
100 actuators are shown in figure 7.
WARNING
Avoid personal injury or property
damage from sudden release of
process pressure or bursting of parts.
Before performing any maintenance
operations:
DAlways wear protective gloves,
clothing, and eyewear when
performing any maintenance
operations to avoid personal injury.
DDisconnect 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.
DUse 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.
DVent the power actuator loading
pressure and relieve any actuator
spring precompression.
DUse lock-out procedures to be
sure that the above measures stay in
effect while you work on the
equipment.
DThe 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.
DCheck with your process or safety
engineer for any additional measures
that must be taken to protect against
process media.
1. Isolate the control valve from the line pressure,
release pressure from both sides of the valve, and
drain the process media from both sides of the
valve. If using a power actuator, also shut off all
pressure lines to the power actuator, release all air
pressure from the actuator. Use lock-out procedures
to be sure that the above measures stay in effect
while you work on the equipment.
2. Remove the shroud plate (key 65) by removing
the cap head screws (key 66).
a. For small spring force, loosen the jam nut
(key 26), and rotate the adjusting nut (key 25)
until spring compression is relieved.
b. For high spring force:
Note
To relieve spring compression when
high spring forces exist, refer to the
Spring section, and follow the
instructions given for size 100
actuators with high spring force.
667 Size 80 and 100 Actuators
Instruction Manual
Form 1432
December 2007
11
These instructions outline the
procedure required to decrease high
spring compression.
Loosen the jam nut (key 26), and rotate the adjusting
nut (key 25) until spring compression is relieved.
3. Remove the pressure tubing or piping from the
top of the diaphragm casing.
4. For actuators with a top-mounted handwheel
(see figure 9), rotate the handwheel (key 58)
clockwise as far as it will go, unscrew the cap
screws (key 54), and remove the gear case cover
(key 53). Remove the travel stop cap screw, if one is
used, from the actuator stem extension (key 36), and
unscrew the hex nuts (key 47). Unscrew the cap
screws that attach the gear case assembly (key 41)
to the actuator, and remove the gear case assembly.
5. If necessary, remove the actuator from the valve
by separating the stem connector (key 31) and
removing the actuator-to-bonnet bolting. Separate
the stem connector by loosening the stem locknuts
(key 69) and unscrewing the four cap screws.
Note
If the actuator has been removed from
the valve, ensure that it is in the
vertical position. Then, block the
actuator stem (key 144) to support the
weight of the actuator stem, spring
seat and spring (keys 144, 19, and 18).
This will facilitate removal of the nut
(key 24) or actuator stem connector
(key 31, figure 8).
For Actuators Without the
Top-Loaded Option
Disassembly
Part names and locations are shown in figure 5.
Size 100 actuator key number locations are shown in
figure 7.
1. Unscrew the diaphragm casing cap screws and
nuts (keys 13 and 14) and remove the upper
diaphragm casing.
2. For actuators without a top-mounted
handwheel, unscrew and remove the travel stop
cap screw (key 12), if one is used, and the hex nut
(key 24).
3. For actuators with a top-mounted handwheel
(see figure 9), remove the hex nut, actuator stem
extension, and actuator stem connector
(keys 28, 36, and 42).
4. Remove the washer, upper diaphragm plate,
diaphragm, diaphragm retainer, and backup plate
(keys 37, 4, 3, 5 and 6).
5. Unscrew the six cap screws (key 11), and remove
the seal bushing retainer (key 10). Remove the seal
bushing (key 7).
WARNING
To avoid personal injury and property
damage from the sudden release of
spring load, be sure that all spring
load is removed from the actuator
lower diaphragm casing.
6. Unscrew the four hex nuts that secure the lower
diaphragm casing to the yoke assembly (key 67),
and remove the lower diaphragm casing. Replace
the yoke assembly O-rings (key 70) as necessary.
7. The actuator spring (key 18) and stem (key 144)
can now be removed if necessary. Be sure to
disconnect the stem connector (key 31) before
removing the stem.
8. Refer to the following Assembly procedures.
Carefully clean and inspect all parts, or obtain
replacement parts required for reassembly.
Assembly
1. If the actuator stem (key 144, figure 7) was
removed, lubricate the threads on the stem with
lithium grease lubricant (key 237).
2. On the actuator stem, assemble the hex nuts,
thrust bearing, and spring seat (keys 26, 25, 86,
and 19) to the stem. Be certain that the thrust
bearing race with the larger inside diameter faces
the spring seat. Rotate the adjusting nut (key 25) to
position the spring seat 305 mm (12 inches) from the
end of the stem.
3. Install the actuator stem assembly into the yoke
assembly (key 67). Place a support under the stem
to position the lower end of the stem 254 mm (10
inches) above the bottom surface of the actuator
(actuator-to-bonnet joint).
Note
When installing lower diaphragm
casing, install the O-rings (key 70) into
the grooves found in the lower
diaphragm casing before placing the
casing on the yoke assembly. If the
667 Size 80 and 100 Actuators
Instruction Manual
Form 1432
December 2007
12
Figure 5. Size 100 Actuator Construction
DIAPHRAGM CASING
COVER (KEY 15)
UPPER DIAPHRAGM
PLATE (KEY 4)
UPPER DIAPHRAGM
CASING (KEY 1)
DIAPHRAGM (KEY 3)
CAP SCREW (KEY 13)
BACK UP PLATE (KEY 6)
HEX NUT (KEY 14)
DIAPHRAGM RETAINER (KEY 5)
LOWER DIAPHRAGM
CASING ASSEMBLY
(KEY 67)
HEX BUSHING (KEY 62)
CAP SCREW (KEY 11)
CAP SCREW (KEY 12)
HEX NUT (KEY 24)
HEX NUT (KEY 241)
WASHER (KEY 37)
O-RING (KEY 240)
SEAL BUSHING
RETAINER (KEY 10)
O-RING (KEY 9)
SEAL BUSHING (KEY 7)
O-RING (KEY 8)
TRAVEL STOP (KEY 12)
HEX NUT (KEY 24)
HEX NUT (KEY 241)
WASHER (KEY 37)
BACK UP PLATE (KEY 6)
DIAPHRAGM PLATE
(KEY 4)
O-RING (KEY 240)
BACK UP PLATE (KEY 6)
UPPER DIAPHRAGM
CASING (KEY 1)
DIAPHRAGM RETAINER
(KEY 5)
CAP SCREW (KEY 13)
DIAPHRAGM (KEY 3)
CASE ADAPTOR
(KEY 245)
CAP SCREW (KEY 13)
DIAPHRAGM BACK UP
PLATE (KEY 246)
DIAPHRAGM (KEY 3)
DIAPHRAGM
RETAINER
(KEY 5)
STANDARD DIAPHRAGM CONSTRUCTION
TOP LOADED DIAPHRAGM CONSTRUCTION
50A2623-F
56A9820-B
C0773-1 / IL
667 Size 80 and 100 Actuators
Instruction Manual
Form 1432
December 2007
13
spring interferes with installation of
the lower diaphragm casing, reposition
the spring by rotating the adjusting
nut (key 25).
4. Install the lower diaphragm casing, and secure it
by tightening the four hex nuts.
5. Lubricate the seal bushing O-rings (keys 8 and 9)
and the seal bushing (key 7) with lithium grease
lubricant. Install the seal bushing O-rings, seal
bushing, and seal bushing retainer (keys 8, 9, 7
and 10) and secure with the cap screws (key 11).
6. Install the diaphragm backup plate, diaphragm
retainer, diaphragm, upper diaphragm plate, and
washer (keys 6, 5, 3, 4, and 37) on the actuator stem
(key 144).
CAUTION
Install the diaphragm with the fabric
side facing away from the spring.
Smooth the edge of the diaphragm to
avoid wrinkling and be careful that the
diaphragm fold does not get pinched
when the upper diaphragm casing
(key 1) is installed.
CAUTION
If the diaphragm (key 3) is installed so
air pressure is applied to the fabric
side, it will immediately delaminate the
sealing surface (smooth surface) from
the fabric. The delamination can cause
immediate failure of the diaphragm’s
ability to retain pressure.
7. For actuators with a top-mounted handwheel,
screw the actuator stem extension (key 36, figure 9)
as far as it will go into the actuator stem connector
(key 42, figure 9) before tightening the hex nut
(key 28, figure 9).
8. For actuators without a top-mounted
handwheel, Install the hex nut (key 241) and
tighten, install the jam nut (key 24) and tighten so
that it locks the hex nut key 24 in place. Install the
travel stop (key 12).
9. Position the upper diaphragm casing (key 1) on
the diaphragm (key 3) and align the holes.
Note
When you replace actuator
diaphragms in the field, take care to
ensure the diaphragm casing cap
screws 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 80 and 100
actuators.
CAUTION
Do not use lubricant on these cap
screws and nuts. Fasteners must be
clean and dry.
Overtightening the diaphragm casing
cap screws and nuts can damage the
diaphragm. Do not exceed 68 NSm (50
lbfSft) torque.
10. Insert the cap screws (key 13) into the upper
diaphragm casing, and tighten the hex nuts (key 14)
in the following manner. The first four hex nuts
tightened should be diametrically opposed and 90
degrees apart. Tighten these four hex nuts to 34
NSm (25 lbfSft).
11. Tighten the remaining hex nuts in a clockwise,
crisscross pattern to 34 NSm (25 lbfSft).
12. Repeat this procedure by tightening the four hex
nuts, diametrically opposed and 90 degrees apart, to
a torque of 68 NSm (50 lbfSft).
13. Tighten the remaining hex nuts in a clockwise,
crisscross pattern to 68 NSm (50 lbfSft).
14. After the last hex nut is tightened to 68 NSm (50
lbfSft), all of the hex nuts should be tightened again
to 68 NSm (50 lbfSft) in a circular pattern around the
bolt circle.
15. Once completed, no more tightening is
recommended.
16. For actuators with a top-mounted handwheel
(see figure 9), mount the gear case assembly
(key 41) on the actuator using the cap screws
(key 54). Install the hex nuts (key 47) and travel stop
cap screw (if used) on the actuator stem extension
(key 36). Install the gear case cover (key 53) with
the cap screws.
17. Mount the actuator on the valve, and secure
with the actuator-to-bonnet bolting. Refer to the
Installation section to connect the actuator stem to
the valve plug stem.
667 Size 80 and 100 Actuators
Instruction Manual
Form 1432
December 2007
14
For Actuators With the Top-Loaded
Option
Disassembly
For key number locations refer to figure 7, and refer
to the Top-Loaded Actuator Detail shown in figure 7.
Also, refer to figure 5 for diaphragm construction
details.
1. Remove the 40 cap screws (key 13) from the
upper diaphragm casing (key 1) and remove the
casing.
2. Remove the travel stop cap screw (key 12), hex
nuts (key 24 and 241), washer (key 37), backup
plate (key 6), diaphragm retainer (key 5), diaphragm
(key 3), and diaphragm backup plate (key 246) with
O-ring (key 240).
3. Remove the 40 cap screws (key 13) from the
lower side of the casing adaptor (key 245) and
remove the adapter.
4. Remove the diaphragm plate (key 4) with O-ring
(key 240), diaphragm (key 3), diaphragm retainer
(key 5), and backup plate (key 6).
5. Unscrew the six cap screws (key 11) and remove
the seal bushing retainer (key 10). Remove the seal
bushing (key 7). Remove and replace the seal
bushing O-rings (keys 8 and 9) as necessary.
WARNING
To avoid personal injury due to the
sudden, uncontrolled movement of
parts, do not loosen the four hex nuts
on the lower diaphragm casing when
spring pressure is applied. Ensure that
all spring precompression has been
released.
6. Unscrew the four hex nuts that secure the lower
diaphragm casing to the yoke assembly (key 67) and
remove the lower diaphragm casing. Replace the
yoke assembly O-rings (key 70) as necessary.
7. The actuator spring (key 18) and stem (key 144)
can now be removed if necessary. Be sure to
disconnect the stem connector (key 31) before
removing the stem.
8. Unscrew the six cap screws (key 11) and remove
the seal bushing retainer (key 10). Remove the seal
bushing (key 7). Remove and replace the seal
bushing O-rings (keys 8 and 9) as necessary.
9. Unscrew the four hex nuts that secure the lower
diaphragm casing to the yoke assembly (key 67) and
remove the lower diaphragm casing. Replace the
yoke assembly O-rings (key 70) as necessary.
10. The actuator spring (key 18) and stem (key 144)
can now be removed if necessary. Be sure to
disconnect the stem connector (key 31) before
removing the stem.
11. Refer to the size 100 actuator assembly
procedures. Carefully clean and inspect all parts,
and obtain any replacement parts required for
reassembly.
Assembly
1. If the actuator stem (key 144) was removed,
lubricate the threads on the stem with lithium grease
lubricant (key 237).
2. Assemble the hex nuts, thrust bearing, and spring
seat (keys 26, 25, 86, and 19) to the stem. Be
certain that the thrust bearing race with the larger
inside diameter faces the spring seat. Rotate the
adjusting nut (key 25) to position the spring seat 305
mm (12 inches) from the end of the stem.
3. Install the actuator stem assembly into the yoke
assembly (key 67). Place a support under the stem
to position the lower end of the stem 254 mm (10
inches) above the bottom surface of the actuator
(actuator-to-bonnet joint).
Note
When installing the lower diaphragm
casing, install O-rings (key 70) into
grooves found in the lower diaphragm
casing before placing the casing on
the yoke assembly. If the spring
interferes with installation of the lower
diaphragm casing, reposition the
spring by rotating the adjusting nut.
4. Install the lower diaphragm casing (key 67), and
secure it by tightening the four hex nuts.
5. Lubricate the seal bushing O-rings (keys 8 and 9)
and the seal bushing (key 7) with lithium grease
lubricant. Install the seal bushing O-rings, seal
bushing (keys 8 and 9), and seal bushing retainer
(key 7) and secure with four hex nuts.
CAUTION
Install the diaphragm with the fabric
side facing away from the spring.
Smooth the edge of the diaphragm to
avoid wrinkling and be careful that the
diaphragm fold does not get pinched
667 Size 80 and 100 Actuators
Instruction Manual
Form 1432
December 2007
15
when the diaphragm adaptor (key 245,
figure 5) is installed.
CAUTION
If the diaphragm (key 3) is installed so
air pressure is applied to the fabric
side, it will immediately delaminate the
sealing surface (smooth surface) from
the fabric. The delamination can cause
immediate failure of the diaphragm’s
ability to retain pressure.
6. Install the diaphragm backup plate, diaphragm
retainer, diaphragm, O-ring, and diaphragm plate
(keys 6, 5, 3, 240, and 4) on the actuator stem
(key 144).
7. Carefully fold the diaphragm between the
diaphragm backup plate (key 246) and the case
adapter (key 245) while lowering the adapter onto
the lower diaphragm casing assembly (key 67).
Install all 40 cap screws (key 13) and finger tighten.
Note
When you replace actuator
diaphragms in the field, take care to
ensure the diaphragm casing cap
screws 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 80 and 100
actuators.
CAUTION
Do not use lubricant on these cap
screws and nuts. Fasteners must be
clean and dry.
Overtightening the cap screws (key 13)
can damage the diaphragm. Do not
exceed 68 NSm (50 lbfSft) torque.
8. Tighten the cap screws (key 13) in the following
manner. The first four cap screws tightened should
be diametrically opposed and 90 degrees apart.
Tighten these four cap screws to 34 NSm (25 lbfSft).
9. Tighten the remaining cap screws in a clockwise,
crisscross pattern to 34 NSm (25 lbfSft).
10. Repeat this procedure by tightening the four cap
screws, diametrically opposed and 90 degrees apart,
to a torque of 68 NSm (50 lbfSft).
11. Tighten the remaining cap screws in a
clockwise, crisscross pattern to 68 NSm (50 lbfSft).
12. After the last cap screw is tightened to 68 NSm
(50 lbfSft), all of the cap screws should be tightened
again to 68 NSm (50 lbfSft) in a circular pattern
around the bolt circle.
13. Once completed, no more tightening is
recommended.
CAUTION
Install the diaphragm with the fabric
side facing toward the spring. Smooth
the edge of the diaphragm to avoid
wrinkling and be careful that the
diaphragm fold does not get pinched
when the upper diaphragm casing
(key 1) is installed.
14. Install the diaphragm backup plate, diaphragm,
diaphragm retainer, backup plate, washer
(keys 246, 3, 5, 6, 37, 241 and 24), hex nut
(key 241), and hex nut (key 24).
15. For actuators with a top-mounted handwheel
(see figure 9), screw the actuator stem extension
(key 36) as far as it will go into the actuator stem
connector (key 42) before tightening the hex nut
(key 28).
16. For actuators without the handwheel, Install
the travel stop cap screw (key 12), and tighten the
screw.
17. Position the upper diaphragm casing (key 1) on
the diaphragm (key 3) and align the holes.
Note
When you replace actuator
diaphragms in the field, take care to
ensure the diaphragm casing cap
screws 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 80 and 100
actuators.
CAUTION
Do not use lubricant on these cap
screws and nuts. Fasteners must be
clean and dry.
Overtightening the cap screws (key 13)
can damage the diaphragm. Do not
exceed 68 NSm (50 lbfSft) torque.
667 Size 80 and 100 Actuators
Instruction Manual
Form 1432
December 2007
16
18. Insert the cap screws (key 13) into the upper
diaphragm casing (key 1), and finger tighten the
screws.
19. Tighten the cap screws (key 13) in the following
manner. The first four cap screws tightened should
be diametrically opposed and 90 degrees apart.
Tighten these four cap screws to 34 NSm (25 lbfSft).
20. Tighten the remaining cap screws in a
clockwise, crisscross pattern to 34 NSm (25 lbfSft).
21. Repeat this procedure by tightening the four cap
screws, diametrically opposed and 90 degrees apart,
to a torque of 68 NSm (50 lbfSft).
22. Tighten the remaining cap screws in a
clockwise, crisscross pattern to 68 NSm (50 lbfSft).
23. After the last cap screw is tightened to 68 NSm
(50 lbfSft), all of the cap screws should be tightened
again to 68 NSm (50 lbfSft) in a circular pattern
around the bolt circle.
24. Once completed, no more tightening is
recommended.
25. For actuators with a top-mounted handwheel
(see figure 9), mount the gear case assembly
(key 41) on the actuator using cap screws (key 54).
Install the hex nuts (key 47) and travel stop cap
screw (if used) on the actuator stem extension
(key 36). Install the gear case cover (key 53) with
cap screws.
26. Mount the actuator on the valve, and secure
with the actuator-to-bonnet bolting. Refer to the
Installation section to connect the actuator stem to
the valve plug stem.
Size 80 Side-Mounted Handwheel
The side-mounted handwheel assembly (figure 8) is
normally used as a manual operator. The handwheel
can be mounted in either of two position orientations
so that, regardless of valve plug action,
counterclockwise rotation always opens the valve.
The assembly is a continuously connected type with
an indicator to show neutral position. By rotating the
handwheel away from neutral, the handwheel can be
used to limit travel in either direction, but not both
directions at the same time.
A grease fitting is provided on the gear box for
periodic gear lubrication with a general purpose
grease.
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.
Key number location are shown in figure 8.
Disassembly
1. Complete steps 1 through 16 of the Disassembly
portion of the Size 80 Actuator Maintenance section.
2. Unscrew the cap screws (key 88), and remove
the spring case (key 85). Unscrew the cap screws
(key 136), and remove the retaining flange
(key 134). Do not lose the key (key 122).
3. Unscrew two screws (key 79), and remove the
travel stop indicator (key 126).
4. Turn the handwheel (key 58) to raise the lower
sleeve. Continue turning the handwheel until the
lower sleeve is free of the worm gear (key 44). Lift
out the lower sleeve, bearing and gear retainer,
thrust bearing, and worm gear (keys 123, 45, 43,
and 44).
5. The worm shaft (key 51) and associated parts
can be removed in order to replace or lubricate
them. First, remove the handwheel cap (key 127)
and the handwheel (key 58). Do not lose the small
ball or spring (keys 141 and 142).
6. Loosen the two set screws and unscrew the two
worm retainers (keys 48 and 49). The ball bearings
(key 50) will come out with the retainers. Remove
the worm shaft (key 51).
Assembly
1. Pack the ball bearings (key 50) with lithium
grease lubricant (key 237), and insert one ball
bearing in the back worm retainer (key 48).
2. Thread the back worm retainer and ball bearing
(keys 48 and 50) into the gear case. Align the set
screw slot in the worm retainer with the set screw
hole in the gear case, insert the set screw, and
tighten.
3. Coat the worm shaft (key 51) threads with lithium
grease lubricant, and slide the shaft into the gear
case (key 41) so that the end of the shaft fits snugly
in the back worm retainer.
4. Insert the bearing in the front worm retainer
(key 49), and thread the retainer and ball bearing
into the gear case. Align the set screw slot in the
retainer with the set screw hole in the gear case,
insert the set screw, and tighten.
5. Put the spring and ball (keys 142 and 141) in the
handwheel (key 58). Slide the handwheel onto the
667 Size 80 and 100 Actuators
Instruction Manual
Form 1432
December 2007
17
worm shaft (key 51). Thread the handwheel cap
(key 127) onto the worm shaft.
6. Pack the two thrust bearings (key 43) with lithium
grease lubricant. Install one thrust bearing; then
install the worm gear (key 44), followed by the
second thrust bearing and the bearing and gear
retainer (key 45).
7. The lower sleeve (key 123) has two screw holes
in one end. Coat the sleeve threads with lithium
grease lubricant, slide the end of the lower sleeve
with the holes into the thrust bearing (key 43), turn
the handwheel, and feed the sleeve through the
worm gear. Continue turning the handwheel until the
lower sleeve protrudes from the gear case. Fasten
the travel stop indicator (key 126) to the sleeve with
two machine screws (key 79).
8. Install the key (key 122) on the retaining flange
(key 134).
9. Install the retaining flange (key 134) so that the
key engages the slot in the lower sleeve. Secure the
retaining flange with the cap screws (key 136).
10. Adjust the set screws (key 121) to eliminate free
play in the bearings.
Note
Overtightening the set screws will
make handwheel operation difficult.
11. Coat the spring adjustor (key 74) threads with
lithium grease lubricant and install it over the lower
sleeve.
12. Pack the thrust bearing (key 86) with lithium
grease lubricant, and install it on the spring adjustor
(key 74) as shown in figure 8.
13. Slide the spring case (key 85) into position, and
secure with cap screws (key 88).
14. Complete steps 3 through 16 of the Assembly
procedure in the Size 80 Actuator Maintenance
section.
Size 80 Hydraulic Snubber
The size 80 Type 667 is available with a hydraulic
snubber, as shown in figure 8, to aid vertical stability
of the actuator stem movement. The snubber is
adjusted by rotating the adjusting screws (key 104,
figure 8) counterclockwise out of the reservoir
(key 99, figure 8) to increase damping action and
clockwise to decrease damping action. The adjusting
screw on the right (the top one of the two adjusting
screws in section B-B of figure 8) regulates
downward damping action, and the screw on the left
regulates upward damping action.
Size 100 Top-Mounted Handwheel
(Adjustable Up Travel Stop)
Key numbers are shown in figure 9.
A top-mounted handwheel assembly is normally
used as an adjustable-up travel stop to limit full
retraction of the actuator stem. Clockwise rotation of
the handwheel (key 58) moves the actuator stem
(key 144) downward. Counterclockwise rotation will
compress the spring and move the actuator stem
upward.
Instructions are given below for complete
disassembly and assembly. Disassemble only as far
as necessary to accomplish the required
maintenance; then, begin the assembly at the
appropriate step.
Disassembly
1. Isolate the control valve from the line pressure,
release pressure from both sides of the valve, and
drain the process media from both sides of the
valve. If using a power actuator, 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.
2. Bypass the control valve. Reduce the loading
pressure to atmospheric (refer to the Maintenance
section), and remove the tubing or piping from the
diaphragm casing.
3. Unscrew the cap screws (key 54), and remove
the gear case cover (key 53).
4. Loosen the set screws (key 52) in the front and
back worm retainers (keys 48 and 49) and the
handwheel (key 58).
5. Remove the retaining ring (key 60), and remove
the handwheel.
6. Remove front and back worm retainers (keys 48
and 49) and the bearings (key 50).
7. Remove the worm shaft (key 51).
8. Remove the power screw assembly (key 46) by
placing a wrench on the double hex nuts (key 47)
and unscrew the assembly from the actuator stem
extension (key 36). The bearing and gear retainer,
thrust bearing, and worm gear (keys 45, 43, and 44)
will come out with the power screw.
667 Size 80 and 100 Actuators
Instruction Manual
Form 1432
December 2007
18
Assembly
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
lithium grease, and insert one ball bearing into the
back worm retainer (key 48).
2. Thread the back worm retainer and ball bearing
into the gear case. Align the slot in the worm retainer
with the set screw hole in the gear case, insert the
set screw (key 52), and tighten.
3. Coat the worm shaft (key 51) threads with lithium
grease lubricant, and slide the shaft into the gear
case so that the end of the shaft fits snugly in the
back worm retainer.
4. Insert the bearing into the front worm retainer
(key 49), and thread the retainer and ball bearing
into the gear case. Align the slot in the retainer with
the hole in the gear case, insert the set screw
(key 52), and tighten.
5. Slide the handwheel onto the worm shaft
(key 51), and install the retaining ring (key 60).
6. Pack the two thrust bearings (key 43) with lithium
grease lubricant. Install one thrust bearing, then the
worm gear (key 44), followed by the second thrust
bearing and the bearing and gear retainer (key 45).
7. Coat the power screw threads (key 46) with
lithium grease lubricant. Slide the power screw into
the thrust bearing (key 43), turn the handwheel, and
feed the sleeve through the worm gear.
8. Install the gear case cover (key 53), and tighten
the cap screws (key 54).
9. Adjust the set screws (key 55) to eliminate free
play in the bearings.
Note
Overtightening the set screws (key 55)
will make handwheel operation
difficult.
Parts Ordering
Each actuator has a serial number stamped on the
nameplate. Always refer to this number when
corresponding with your Emerson Process
Management sales office regarding replacement
parts or technical information. Also, always refer to
the 11-character part number of each recommended
spare part, as found in the following parts list.
WARNING
Use only genuine Fisherr replacement
parts. Components that are not
supplied by Emerson Process
Management should not, under any
circumstances, be used in any Fisher
valve, because they will void your
warranty, might adversely affect the
performance of the valve, and could
give rise to personal injury and
property damage.
Note
Neither Emerson, Emerson Process
Management, nor any of their affiliated
entities assumes responsibility for the
selection, use and maintenance of any
product. Responsibility for the
selection, use, and maintenance of any
product remains with the purchaser
and end-user.
Parts Kits
Actuator Repair Kit
Parts kit includes keys 8, 9, and 70.
Key Description Part Number
Size 80 R667X000802
Parts List
Note
Part numbers are shown for recommended spares
only. For part numbers not shown, contact your
Emerson Process Management sales office.
Actuator
Key Description Part Number
1 Upper Diaphragm Casing
2 Spacer
3* Diaphragm
Size 80
Nitrile 2R6376X0082
Silicone 18B2713X062
Size 100 std
Nitrile 20A2551X012
Size 100 top loaded
Nitrile (2 required) 20A2551X012
4 Diaphragm Plate, upper
5 Diaphragm Retainer
6 Backup Plate
7* Seal Bushing
Size 80, glass-filled PTFE 1H7441X0022
Size 100, Brass 20A2582X012
*Recommended spare parts
667 Size 80 and 100 Actuators
Instruction Manual
Form 1432
December 2007
19
Key Description Part Number
8* O-Ring, nitrile (2 required)
Size 80 1D542906992
Size 100 1H8627X0042
9* O-Ring, nitrile
Size 80 1D439206992
Size 100 1R834206992
10 Seal Bushing Retainer
11 Cap Screw
12 Cap Screw
13 Cap Screw
14 Hex Nut
15 Diaphragm casing Cover
16 Cap Screw
17 Y602 Vent Assembly
18 Spring, steel See following table
19 Spring Seat
19 Spring Plate
20 Spring Guide
21 Cap Screw
22 Washer
24 Hex Nut
25 Hex Nut
26 Hex Nut
30 Cap Screw
31 Stem Connector Assembly
32 Travel Scale
33 Machine Screw
34 Travel Indicator
35 Cap Screw
37 Washer
39 Nameplate
40 Drive Screw
60 Retaining Ring
62 Hex Bushing
63 Lifting Pin
64 Lower Diaphragm Casing
65 Shroud Plate
66 Cap Screw
67 Lower Diaphragm Casing, yoke & tie rod assembly
69 Hex Jam Nut
70* Gasket, composition
Size 80 only 1H7369X0012
70* O-Ring, nitrile (4 required)
Size 100 only 1C415706992
71 Diaphragm Plate, lower
72 Snap Ring
73 Yoke
74 Spring Adjustment screw
78 Pipe Bushing
79 Machine Screw
84 Travel Stop
85 Spring Case
86 Thrust Bearing
87 Cover Band Assembly
88 Cap Screw
89 Spring Case Adaptor
Key Description Part Number
90 Cap Screw
91 Hex Nut
92 Pipe Bushing
144 Actuator Stem
235 Bushing
236 Tag/Wire Assembly
237 Lithium Grease, 14 oz. (0.396 kg) can
238 Gasket Sealant (hard set), 11 oz. (0.311 kg) tube
240* O-Ring, nitrile
Size 100 only
Std (1 required) and w/top loaded (2 required) 1C339006992
241 Hex Nut
242 Y602-12 Vent Assembly
243 Warning Plate
244* Gasket, composition
Size 100
Top Loaded only (part not shown) 11A3391X012
245 Case Adaptor
246 Backup Plate
249 Bushing, split yoke
250 Yoke Bushing Holder
251 Yoke Bushing Retainer
252 Cap Screw
Side-Mounted Handwheel Size 80
29 Hand Grip
38 Hand Grip Bolt
41 Gear Case
43 Thrust Bearing
44 Worm Gear
45 Bearing & Gear Retainer
48 Back Worm Retainer
49 Front Worm Retainer
50 Ball Bearing
51 Worm Shaft
57 Grease Fitting
58 Handwheel
121 Set Screw
122 Key
123 Lower Sleeve
124 Machine Screw
126 Travel Stop Indicator
127 Handwheel Cap
134 Retaining Flange
135 Travel Stop Nut
136 Cap Screw
137 Set Screw
138 Cap Screw
139 Travel Stop Scale
140 Travel Stop Indicator Bracket
141 Ball
142 Spring
143 Machine Screw
237 Lithium Grease, 14 oz. (0.396 kg) can
238 Gasket Sealant (pliable film), 11 oz. (0.311 kg) tube
*Recommended spare parts
667 Size 80 and 100 Actuators
Instruction Manual
Form 1432
December 2007
20
Key 18 Spring, steel
ACTUATOR
SIZE
RANGE TRAVEL COMPRESSION
RATE
MAXIMUM
LOAD PART
NUMBER
COLOR
SIZE bar psi mm Inches N/mm Lb/in N Lb NUMBER CODE
0.2-1 3-15 76 3 175.1 1000 25,042 5630 1H747727082 Red
0.2-1 3-15 51 2
288 9
1650
35 139
7900
1H747527082
0.3-1.7 5-25 76 3 288.9 1650 35,139 7900 1H747527082 Lt. Blue
80
0.4-2 6-30 38 1.5
367 7
2100
47 148
10 600
1H747327082
80 0.4-2 6-30 76 3 367.7 2100 47,148 10,600 1H747327082 Yellow
0.3-1.7 5-25 51 2 455.3 2600 47,148 10,600 1H747627082 Lt. Green
0.2-1 3-15 29 1.125
542 58
3100
61 382
13 800
1H747027082
0.4-2 6-30 51 2 542.58 3100 61,382 13,800 1H747027082 White
Key 18 Spring, steel
ACTUATOR
SIZE
COMPRESSION
RATE
MAXIMUM
LOAD PART
NUMBER
SIZE N/mm Lb/in N Lb NUMBER
100
310.8
516.5
787.9
1050.6
1775
2950
4500
6000
77,840
111,200
160,128
200,160
17,500
25,000
36,000
45,000
10A2561X012
10A2562X012
10A2563X012
10A2564X012
Top-Mounted Handwheel Size 100
Key Description Part Number
28 Hex Nut
36 Actuator Stem Extension
41 Gear Case
42 Actuator Stem Connector
43 Thrust Bearing
44 Worm Gear
45 Bearing & Gear Retainer
46 Power Screw Assembly
47 Hex Nut
48 Back Worm Retainer
49 Front Worm Retainer
50 Ball Bearing
51 Worm Shaft
52 Set Screw
53 Gear Case Cover
54 Cap Screw
55 Set Screw
56 Hex Nut
57 Grease Fitting
58 Handwheel
59 Woodruff Key
61 Slot Cover
Hydraulic Snubber Size 80
Key Description Part Number
23 Stem & Piston Assembly
93 Cylinder
94 Cylinder Head
95 Retaining Ring
96* O-Ring, nitrile (2 required) 1F449206992
97* Piston Ring, iron (2 required) 1C710321992
98 Pipe Plug
99 Reservoir
100* O-Ring, nitrile 1H624706992
101 Cap Screw
102 Pipe Plug
103* O-Ring, nitrile (2 required) 1D687506992
104 Adjusting Screw
105 Hex Nut
106 Cap Screw
107* O-Ring, nitrile 1H972406992
108 Hydraulic fluid, 2 gal (7.6L)
109* O-Ring, nitrile (2 required) 1E591406992
110 Orifice
111 Bypass & Check Valve Plug
112 Spring
113 E-Ring
114 Bushing
115 Flange
116 Packing Sleeve
117 Machine Screw
118* Packing, nitrile (8 required) 1P540806992
119* Packing, neoprene & cotton (4 required) 1P540906992
120* O-Ring, nitrile (2 required) 1P541206992
*Recommended spare parts
667 Size 80 and 100 Actuators
Instruction Manual
Form 1432
December 2007
21
Figure 6. Size 80 Type 667 Actuator
NOTE:
KEYS 243, 244, 245, AND 246
ARE NOT SHOWN.
50A8597-D / DOC
50A8599-C
APPLY LUB/SEALANT
TOPĆLOADED ACTUATOR DETAIL
667 Size 80 and 100 Actuators
Instruction Manual
Form 1432
December 2007
22
Figure 7. Size 100 Type 667 Actuator
NOTES:
THIS PART IS LOCATED 90_ TO FRONT OF POSITION SHOWN
2. KEYS 243 AND 244 ARE NOT SHOWN
1
APPLY LUB
50A2623-F / DOC
56A9820-B / DOC
TOPĆLOADED ACTUATOR DETAIL
667 Size 80 and 100 Actuators
Instruction Manual
Form 1432
December 2007
23
Figure 8. Size 80 Type 667 Actuator with Side-Mounted
Handwheel and Hydraulic Snubber
VIEW A SECTION BĆB
BB
VIEW A
APPLY LUB/SEALANT
50A8759-C / DOC
667 Size 80 and 100 Actuators
Instruction Manual
Form 1432
December 2007
24
Figure 9. Size 100 Top-Mounted Handwheel
APPLY LUB
50A2624-F / DOC
Emerson Process Management
Marshalltown, Iowa 50158 USA
Cernay 68700 France
Sao Paulo 05424 Brazil
Singapore 128461
www.Fisher.com
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.
We reserve the right to modify or improve the designs or specifications of such products at any time without notice.
Neither Emerson, Emerson Process Management, nor any of their affiliated entities assumes responsibility for the selection, use and
maintenance of any product. Responsibility for the selection, use and maintenance of any product remains with the purchaser and end-user.
EFisher Controls International LLC 1973, 2007; All Rights Reserved Printed in USA
Fisher is a mark owned by Fisher Controls International LLC, a member of the Emerson Process Management business division 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.

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