Instruction Manual
D104405X012
Service Instructions for Fisher™ 1068
Rotary Vane Actuator
1068
August 2020
This instruction manual was prepared by Kinetrol.
Do not install, operate or maintain this product
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
of the contents of this manual, including all safety
cautions and warnings.
If you have any questions about these instructions,
contact your Emerson sales office
before proceeding.
Fisher 1068 Rotary Vane Actuator
X1591
SPRING RETURN
www.Fisher.com
X1590
DOUBLE ACTING
1068
August 2020
Instruction Manual
D104405X012
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.
CAUTION
To avoid parts damage, do not apply pressure that exceeds the Maximum Diaphragm Casing Pressure in table 1. Use
pressure-limiting or pressure-relieving devices to prevent the Operating Pressure from exceeding the values in table 3.
Actuator Mounting
WARNING
Avoid personal injury or property damage from sudden release of process pressure or bursting 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.
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 Safely vent the power actuator loading pressure.
D Use lock-out procedures to be sure the above measures stay in effect with you work on the equipment.
D The valve packing box may contain process fluids that are pressurized, even with the valve has been removed from the
pipeline. Process fluids may spray out under pressure when removing the packing hardware or packing rings.
D Check with your process or safety engineer for any other hazards that may be present from exposure to process media.
CAUTION
When adjusting the travel stop for the closed position of the valve ball or disk, refer to the appropriate valve instruction
manual for detailed procedures. Undertravel or overtravel at the closed position may result in poor valve performance
and/or damage to the equipment.
Neither Emerson, Emerson Automation Solutions, 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 is a mark owned by one of the companies in the Emerson Automation Solutions business unit of Emerson Electric Co. Emerson Automation Solutions,
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 Automation Solutions
Marshalltown, Iowa 50158 USA
Sorocaba, 18087 Brazil
Cernay, 68700 France
Dubai, United Arab Emirates
Singapore 128461 Singapore
www.Fisher.com
2
E 2018, 2020 Fisher Controls International LLC. All rights reserved.
Installation, Operation & Maintenance Instructions Fisher 1068 series (Models 5i-15i)
ROTARY 1/4 TURN PNEUMATIC ACTUATORS
Suitable for use in safe area and hazardous gas/dust atmospheres (ATEX)
Issue
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Signed Date
D.G.W 08-01-20
Trading Estate Farnham Surrey England
Doc.No. TD202
Page 1 of 18
Installation, Operation & Maintenance Instructions Fisher 1068 series (Models 5i-15i)
ROTARY 1/4 TURN PNEUMATIC ACTUATORS
Suitable for use in safe area and hazardous gas/dust atmospheres (ATEX)
Table of Contents
Section 1: Rotary ¼ turn actuator / double acting & spring return models.
1.1 General Actuators & Spring Returns
1.1.1 Mounting Holes sizes
1.1.2 Mounting
1.1.3 Drive Coupling
1.1.4 Air / Gas Supply
1.1.5 Operation
1.1.6 Maintenance
1.1.7 Recommended Spare Parts
1.1.8 Labelling
1.1.9 Adjustment
1.2 Actuator Seal Replacement Instructions
1.2.1 Dismantling Actuator
1.2.2 Re-assembling Vane
1.2.3 Re-assembling Actuator
1.2.4 Exploded view of typical Actuator
1.3 Spring Return Units
1.3.1 Removal of Spring Return Unit
1.3.2 Re-fitting of Spring Return Unit
Section 2: Accessory mount for Fisher DVC2000 & DVC6200 Positioners
2.1.1 Mount kit for Fisher DVC Positioners
2.1.2 Accessory mount plate for size 12i/14i/15i Actuators
Section 3: Installation of Valve Yokes and anti-backlash couplings
3.1.1 Fitting anti-backlash couplings to Spring Return actuators
3.1.2 Mounting Yokes to Actuators & Spring Returns
3.1.3 Mounting Yokes to valves
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Signed Date
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Trading Estate Farnham Surrey England
Doc.No. TD202
Page 2 of 18
Installation, Operation & Maintenance Instructions Fisher 1068 series (Models 5i-15i)
ROTARY 1/4 TURN PNEUMATIC ACTUATORS
Suitable for use in safe area and hazardous gas/dust atmospheres (ATEX)
Section 1: Rotary ¼ turn actuator / double acting & spring return models.
1.1 General Actuators & Spring Returns
1.1.1 Mounting Holes sizes
Table 1: Actuator (ANSI Threads)
Model ANSI Thread Depth of Thread PCD
Number of
Holes
7i 4 5/16-18 UNC 0.63” 2.00”
8i 4 5/16-18 UNC 0.63” 2.76”
9i 4 3/8-16 UNC 0.79” 2.56”
10i 4 3/8-16 UNC 0.63” 4.02”
12i 4 1/2-13 UNC 0.94” 3.06”
14i 4 5/8-11 UNC 1.12” 3.89”
15i 4 5/8-11 UNC 1.12” 5.51”
Table 2: Spring Return (ANSI Threads)
Model ANSI Thread Depth of Thread PCD
Number
of Holes
5i 4 5/16-18 UNC 0.51” 2.76”
7i 4 5/16-18 UNC 0.51” 2.76”
8i 4 5/16-18 UNC 0.63” 2.76”
9i 4 3/8-16 UNC 0.63” 4.02”
10i 4 3/8-16 UNC 0.63” 4.02”
12i 4 3/8-16 UNC 0.63” 4.02”
14i 4 1/2-13 UNC 0.94” 4.92”
15i
4
5/8-11 UNC 1.12” 5.51”
1.1.2 Mounting
Actuator / spring and driven unit must be correctly aligned, i.e. actuator vane / spring
coupling and driven unit must be able to move in same direction from end stop when
coupled together.
Figure 1.
Vane shown in mid-travel position.
Identifying groove in top of output drive
square shows position of vane.
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Doc.No. TD202
Page 3 of 18
Installation, Operation & Maintenance Instructions Fisher 1068 series (Models 5i-15i)
ROTARY 1/4 TURN PNEUMATIC ACTUATORS
Suitable for use in safe area and hazardous gas/dust atmospheres (ATEX)
Note: Position of output shaft when vane at mid-travel position.
1) Take particular care in aligning model 5i actuator, 6-hole mounting means 30°
misalignment possible if flange has 60° error and coupling 90° error.
2) There must be no end load on actuator drive shaft.
3) Check clearance between actuator and driven unit drive shaft,allowing for
coupling to be used.
4) Care must be taken to ensure concentricity between actuator or spring return
drive shaft and driven unit shaft.
5) Actuator can be mounted in any plane.
6) When side loading of actuator shaft is unavoidable, ensure load does not exceed
guide lines given in Kinetrol Technical data sheet TD28.
1.1.3 Drive Coupling
1) Square hole drive coupling supplied for double acting actuators and anti-backlash
drive coupling supplied with spring return actuators both in stainless steel.
2) In order to prevent rubbing and wear on the actuator / spring mount face, the
actuator square should engage as deeply as reasonably practical into the
coupling. However, a minimum gap of 0.5mm (0.02”) between the coupling face
and actuator / spring mount face should be maintained.
1.1.4 Air/Gas Supply
1) Operating air pressure should not exceed 7 bar (100 psi).
2) Supply medium must be clean, dry, oil-free, and non-corrosive and meet the
requirements of ISA standard 7.0.01 or ISO 8573-1. Severe personal injury or
property damage may occur from an uncontrolled process if the instrument
supply medium is not clean, dry, oil-free, and non-corrosive. While use and
regular maintenance of a filter that removes particles larger than 40 micrometers
in diameter will suffice in most applications, further filtration down to 5 micrometer
particle size is recommended. Lubricant content is not to exceed 1 ppm weight
(w/w) or volume (v/v) basis. Condensation in the air supply should be minimised.
3) Plastic or other non-conductive tubing should not be used if unit is ATEX.
4) The actuator can be driven by a hazardous gas as long as the gas is not corrosive
(e.g. natural gas “sweet” and not “sour” gas is used).
5) The actuator shall not be operated with flammable gas/air mixtures.
6) Air can be passed to the actuator from three different sets of air ports:
a) Through the side holes.
b) Through the two holes at the rear of the actuator by fitting a Namur adaptor.
c) Through the two holes in the top flange of the actuator.
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Signed Date
D.G.W 08-01-20
Trading Estate Farnham Surrey England
Doc.No. TD202
Page 4 of 18
Installation, Operation & Maintenance Instructions Fisher 1068 series (Models 5i-15i)
ROTARY 1/4 TURN PNEUMATIC ACTUATORS
Suitable for use in safe area and hazardous gas/dust atmospheres (ATEX)
1.1.5 Operation
1) External stops are strongly recommended when actuator is operating a
mechanism with cantilevered load. However, Kinetrol technical data sheet,
TD37, can be used to ensure load inertia and travel speed remain within
allowable limits.
2) Positioner end of drive shaft may be used for visual position indication, when
indicator arrow fitted.
3) Spring units can only be fitted to the driven (square) end of the actuator.
4) Ambient operating temperature range of actuator and spring is -40°C to 80°C as
standard and -54°C to 60°C with low temperature seals.
Special care should be taken to ensure that heat conducted from, for example, a
hot valve, does not increase the temperature above these limits.
Refer to Kinetrol for guidance.
5) Ensure environmental conditions, such as corrosive environments, are
compatible with the materials of construction and protective finishes (Kinetrol
technical data sheet TD14 refers). If unsure, contact Kinetrol.
Excessive corrosion of the actuator and spring may cause it to fail in service.
6) The maximum rubbing speed of any component within the actuator and spring
return unit must not exceed 4m/s for Cat 2.
See table below for minimum operating travel times:
7) Do not allow dust layers to build up on the apparatus.
Table 3: Minimum Actuator operating travel times
Model
5i 0.027
7i 0.036
8i 0.042
9i 0.046
10i 0.047
12i 0.060
14i 0.081
15i 0.091
Category 2 operating time for
90° travel (sec)
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Signed Date
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Trading Estate Farnham Surrey England
Doc.No. TD202
Page 5 of 18
Installation, Operation & Maintenance Instructions Fisher 1068 series (Models 5i-15i)
ROTARY 1/4 TURN PNEUMATIC ACTUATORS
Suitable for use in safe area and hazardous gas/dust atmospheres (ATEX)
1.1.6 Maintenance
1) Actuator maintenance is limited to replacement of seals when wear affects actuator
performance.
2) Seal life will vary according to application, conditions of cycle frequency,
temperature, condition of air supply, etc.
3) Detailed seal replacement instructions in next section.
4) Spring return units are not user serviceable and therefore no spare parts are
available other than complete units, baseplate gasket / O-ring seals and keeper
plates for safe spring removal.
1.1.7 Recommended Spare Parts
1) Standard seal kits, available for each actuator model, consist of the following:
- 2 off vane seal - 2 off expander - 2 off shaft seal
- Plus all necessary O-rings, screws, nuts and grease for all sizes.
In addition, a tube of sealant will be required to seal case halves.
Table 4: Standard seal kit spare part ordering codes
Model Act Seal Kit P/N
Vane P/N Baseplate Seal P/N
5i R1068KTX012 R1068KTX132 R1068KTX262
7i R1068KTX022 R1068KTX142 R1068KTX272
8i R1068KTX032 R1068KTX152 R1068KTX282
9i R1068KTX042 R1068KTX162 R1068KTX292
10i R1068KTX052 R1068KTX172 R1068KTX302
12i R1068KTX062 R1068KTX182 R1068KTX312
14i R1068KTX072 R1068KTX192 R1068KTX322
15i R1068KTX082 R1068KTX202 R1068KTX332
1.1.8 Labelling
1) All Kinetrol actuators and spring return units that are approved for use in areas
where explosives, dust and gases are present, are marked with the following labels:
Figure 2. ATEX labels
2) Ensure that the details on the label such as the ambient temperature range is
suitable for the application. Also ensure that any other equipment fitted to the
actuator and spring return unit (e.g.valve or positioner) does not restrict the use
within the parameters shown on the above labels.
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Doc.No. TD202
Page 6 of 18
Installation, Operation & Maintenance Instructions Fisher 1068 series (Models 5i-15i)
ROTARY 1/4 TURN PNEUMATIC ACTUATORS
Suitable for use in safe area and hazardous gas/dust atmospheres (ATEX)
1.1.9 Adjustment
1) Kinetrol Actuators come as standard with adjustable end stops.
Table 5: Standard stroke adjustments available
Models Adjustment range available
5i/7i/8i/9i/14i/15i 10º
10i/12i 11º
2) Greater adjustment range possible with non-standard stops.
Contact Kinetrol for details.
1.2 Actuator Seal Replacement Instructions
1.2.1 Dismantling Actuator
1) DISMANTLING ACTUATOR (see exploded view Figure 3)
CAUTION: Before dismantling, check there are no burrs on square drive
shafts. If there are, remove to avoid damage to bearings and shaft seals
during removal of case halves. In the case of spring return actuators, remove
spring unit (according to section 1.3.1) before opening actuator case.
Ancillary equipment such as DVC mount plate / Yoke / coupling etc, will also
need to be removed before dismantling actuator.
2) All models: loosen, but do not remove, all case screws.
3) Separate case halves by connecting air to inlet port and apply pressure to
drive them apart. Procedure is safe although the separation is audible, ear
defenders are recommended.
Pull off one case half.
CAUTION: Do NOT hammer diecast castings or shaft end. It will damage
internal sealing surfaces.
4) Clean both case halves removing silicone rubber sealant.
Clean joint surfaces of case flange with surgical spirit.
5) Replace and lubricate shaft seals.
6) Undo vane nuts and bolts and remove old expanders and seals from
vane. Take care not to damage side plates.
7) Clean vane.
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Signed Date
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Trading Estate Farnham Surrey England
Doc.No. TD202
Page 7 of 18
Installation, Operation & Maintenance Instructions Fisher 1068 series (Models 5i-15i)
ROTARY 1/4 TURN PNEUMATIC ACTUATORS
Suitable for use in safe area and hazardous gas/dust atmospheres (ATEX)
1.2.2 Re-assembling vane
1) Check vane for any obvious defects and make sure it is free of burrs, then
place vane face down on a bench or hold in a vice.
2) Fit Side plate Infill Insert into Side plates (7i only). Push hex headed bolts with
plain washer through side plate, expander (teeth facing towards head of bolt)
and seal (base of seal away from bolt head).
3) After checking that expander and seal are the right way round expander has vane shaped hole, seal has shaft centre line marked.
4) While holding up side plate, expander and seal, apply a low strength
anaerobic adhesive to bolt thread such as Loctite 222.
5) Thread first few threads of each bolt into vane.
6) Screw bolts down and tighten to torques given in table 6.
7) Turn vane over then fit seal, expander and side plate over end of bolts.
Check orientation as before.
8) Screw nuts down thread.
9) Hold head of bolt with a spanner, torque up nuts to torque specified in table 6.
Table 6: Vane bolt and nut Tightening Torques
Model
5i 8lbf.ins 0.90 Nm
7i 8lbf.ins 0.90 Nm
8i 20lbf.ins 2.26 Nm
9i 20lbf.ins 2.26 Nm
10i 15lbf.ins 1.70 Nm
12i 30lbf.ins 3.39 Nm
14i 30lbf.ins 3.39 Nm
15i 30lbf.ins 3.39 Nm
Tightening Torque
1.2.3 Re-assembling Actuator
1) Coat bearing bushes and inside both case halves with molybdenum disulphide
grease or grease supplied by Kinetrol (usually as part of seal kit).
2) Lightly and evenly coat joint face on each case half with instant gasket
sealant available from Kinetrol or Silastic 732 RTV sealant
obtainable from ironmongers, etc. may be used as a substitute.
CAUTION: EXCESS SEALANT, if extruded inside case,
WILL IMPAIR OPERATION OF SEALS.
Remove all excess sealant especially from inside edge.
3) Insert vane into one case half, turning it to ease square on drive shaft through
shaft seal. Watch that lip seals at ends of vane easily work down into case
without damage.
4) Fit remaining case half on top of the other, turning it to ease positioner shaft
through shaft seal.
5) CAUTION: Check that lip seals are not trapped at case joint face. Ensure
minimal time delay to closing of case once sealant has been applied.
6) Tighten case bolts to torques given in table 7.
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Signed Date
D.G.W 08-01-20
Trading Estate Farnham Surrey England
Doc.No. TD202
Page 8 of 18
Installation, Operation & Maintenance Instructions Fisher 1068 series (Models 5i-15i)
ROTARY 1/4 TURN PNEUMATIC ACTUATORS
Suitable for use in safe area and hazardous gas/dust atmospheres (ATEX)
Table 7: Case bolt Tightening Torques
Model
Tightening Torque
5i 20lbf.ins 2.26 Nm
7i 20lbf.ins 2.26 Nm
8i 60lbf.ins 6.78 Nm
9i 60lbf.ins 6.78 Nm
10i 80lbf.ins 8.96 Nm
12i 100lbf.ins 11.3 Nm
14i 120lbf.ins 13.6 Nm
15i 225lbf.ins 25.4 Nm
7) Rotate vane manually to check movement and wipe away sealant extruded
internally.
8) Allow setting time for sealant before applying test air pressure.
Figure 3. Exploded view of typical actuator
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Signed Date
D.G.W 08-01-20
Trading Estate Farnham Surrey England
Doc.No. TD202
Page 9 of 18
Installation, Operation & Maintenance Instructions Fisher 1068 series (Models 5i-15i)
ROTARY 1/4 TURN PNEUMATIC ACTUATORS
Suitable for use in safe area and hazardous gas/dust atmospheres (ATEX)
1.3 Spring Return Units
1.3.1 Removal of spring return unit
1) WARNING – the wound-up steel springs are storing a large amount of energy
which, if suddenly released, can be dangerous.
2) A keeper plate strong enough to take full spring torque must be fitted in order to
remove S/R unit without releasing spring tension.
3) Keeper plates and screws available from Kinetrol.
Refer to table 8 for spare part order Numbers.
Table 8: Keeper plate ordering codes
Model Part Number
5i
GE98028X012
7i GE98028X022
8i GE98028X032
9i GE98028X042
10i GE98028X052
12i GE98028X062
14i GE98028X072
15i GE98028X082
Figure 4. Typical spring return actuator
4) If the spring return actuator is installed as shown in figure 4, it will first be
necessary to invert the assembly before removing or refitting the spring unit.
(as shown in figure 5)
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Signed Date
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Trading Estate Farnham Surrey England
Doc.No. TD202
Page 10 of 18
Installation, Operation & Maintenance Instructions Fisher 1068 series (Models 5i-15i)
ROTARY 1/4 TURN PNEUMATIC ACTUATORS
Suitable for use in safe area and hazardous gas/dust atmospheres (ATEX)
5) Connect air line via pressure regulating valve to actuator air inlet.
Note DVC connecting port to be plugged.
6) Place keeper plate over square shaft protruding from S/R unit.
7) Increase air pressure slowly until actuator vane turns to mid-travel position.
(See Figure 1 of actuator section.)
8) Keeper plate holes will then line up with threaded holes in spring housing.
9) Insert all screws through keeper plate holes and tighten to lock keeper plate
in position. Disconnect air supply.
10) Separate spring housing from base plate by removing holding screws. Then
remove spring housing.
11) If necessary to gain access to actuator case fixing screws also remove base
plate by removing base plate screws. Take care with gasket / O-ring between
base plate and actuator. (Service actuator as required per Seal Replacement
Instructions section 1.2).
Figure 5. Spring return unit section view
Keeper Plate
Spring Housing
Base Plate
Base Plate Screw
O Ring Seal
(08 only)
Holding Screws
Gasket or O ring seal
Actuator
Square
Shaft Seal
Spring
O Ring Seal
1.3.2 Re-fitting of Spring unit
1) If necessary replace base plate after replacing gasket or O-ring as appropriate.
Refer to table 4 for spare part order numbers. Ensure the 4 countersunk base
plate fixing screws are all fitted with O-rings (8i models only).
2) Ensure actuator vane is in mid-travel position.
3) Locate spring housing on drive shaft, rotate it to line up holding screw holes
with base plate and replace holding screws.
4) Connect air line via pressure regulating valve to actuator air inlet.
5) Adjust air pressure until it balances the spring tension.
6) Loosen keeper plate screws. If air pressure is correct balancing spring tension
will not bind. If binding, adjust air pressure until balanced.
7) Remove keeper plate completely.
8) Disconnect air supply.
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Signed Date
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Trading Estate Farnham Surrey England
Doc.No. TD202
Page 11 of 18
Installation, Operation & Maintenance Instructions Fisher 1068 series (Models 5i-15i)
ROTARY 1/4 TURN PNEUMATIC ACTUATORS
Suitable for use in safe area and hazardous gas/dust atmospheres (ATEX)
Section 2: Accessory mount for Fisher DVC2000 & DVC6200 Positioners
2.1.1 Mount kit for Fisher DVC Positioners
a) The Fisher DVC2000 & DVC6200 positioners can be direct mounted to
actuator models 5i to 15i via a DVC mount kit.
b) Two variants of the DVC mount kit are available one which fits to the model
05i actuator and another which fits to the 7i to 15i size actuators.
c) Note, models 12i, 14i and 15i require an additional accessory mount plate
(supplied with actuator as standard).
Figure 6. General arrangement of the DVC mount kit.
Models 7i to 15i
Model 5i
d) Fitting DVC mount kit to Spring return actuator:
Note: model 5i (only) has a separate coupling fastened to the shorter output
square (supplied with actuator as standard) for the DVC array to fit into.
- First remove one of the boss air port screws (according to the desired
direction of travel).
- Fit O-ring seals as shown in figure 6, apply a small amount of grease to seals
to hold in place while fitting DVC plate to actuator.
- Fit DVC magnet array into actuator round shaft.
- Fit position indicator over magnet array and secure onto actuator shaft using
screws provided.
- Valve open/closed indication plate can be reversed.
e) If fitting to a Double acting actuator first follow section 2.1.1d then remove the
opposing flange air port blanking plug, this will need to be externally piped to
the DVC positioner.
f) Note all fasteners are to be chemically locked using Loctite 222 or equivalent.
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Signed Date
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Trading Estate Farnham Surrey England
Doc.No. TD202
Page 12 of 18
Installation, Operation & Maintenance Instructions Fisher 1068 series (Models 5i-15i)
ROTARY 1/4 TURN PNEUMATIC ACTUATORS
Suitable for use in safe area and hazardous gas/dust atmospheres (ATEX)
2.1.2 Accessory mount for size 12i, 14i & 15i actuators
a) To mount the DVC mount kit to actuator models 12i to 15i an accessory plate
first needs to be fitted to the actuator (supplied pre-fitted to spring return
actuators and loose within coupling kit for double acting actuators).
Figure 7. Accessory plate for actuator models 12i to 15i
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b) O-rings seals are fitted in grooves as shown in figure 7.
c) Plate fits to actuators in different orientations as shown in figure 7.
d) DVC mount kit direct mounts to the accessory plate as per figure 6.
Signed Date
Trading Estate Farnham Surrey England
D.G.W 08-01-20
Doc.No. TD202
Page 13 of 18
Installation, Operation & Maintenance Instructions Fisher 1068 series (Models 5i-15i)
ROTARY 1/4 TURN PNEUMATIC ACTUATORS
Suitable for use in safe area and hazardous gas/dust atmospheres (ATEX)
Section 3: Installation of Valve Yokes and anti-backlash couplings
3.1.1 Fitting anti-backlash couplings to Spring Return actuators
A range of anti-backlash couplings are available to direct couple to Fisher valves.
A complete list of available options can be seen in table 11.
Note: Double acting actuators are fitted with solid couplings a complete list of
available options can be seen in table 12.
Figure 8. Anti-backlash coupling fitted to Spring return actuator
a) Fit coupling to spring return actuator leaving approx 0.5mm (0.02”) gap between
coupling face and spring mount face as shown on figure 8 dimension “A”.
b) Apply a low strength anaerobic adhesive to actuator square clamp screw threads
such as Loctite 222 and torque up screw / screws to value given in table 9.
c) Double acting actuators do not use anti-backlash couplings due to clearance
constraints a range of standard through square couplings are available.
Table 9. Anti-backlash coupling clamp screw tightening torques
Screw size
Tightening Torque
M6 156 lbf.ins 17.6 Nm
M8 372 lbf.ins 42 Nm
M10 797 lbf.ins 90 Nm
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M12 1416 lbf.ins
Signed Date
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D.G.W 08-01-20
160 Nm
Doc.No. TD202
Page 14 of 18
Installation, Operation & Maintenance Instructions Fisher 1068 series (Models 5i-15i)
ROTARY 1/4 TURN PNEUMATIC ACTUATORS
Suitable for use in safe area and hazardous gas/dust atmospheres (ATEX)
3.1.2 Mounting Yokes to Actuators & Spring Returns
Figure 9. Yoke fitted to Spring return actuator
a) First fit valve fasteners into yoke before fitting yoke to double acting / spring return
actuator (some sizes lack the clearance to fit after).
b) Apply a low strength anaerobic adhesive to yoke fastener screw threads
such as Loctite 222 and torque up screws, consult TD111 for tightening torques.
c) Note washers may not be supplied for some yoke and valve fasteners due to
space constraints.
3.1.3 Mounting yokes to valves
Figure 10. Valve fitted to Spring return actuator
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Doc.No. TD202
Page 15 of 18
Installation, Operation & Maintenance Instructions Fisher 1068 series (Models 5i-15i)
ROTARY 1/4 TURN PNEUMATIC ACTUATORS
Suitable for use in safe area and hazardous gas/dust atmospheres (ATEX)
a) Ensure valve opening and closing direction matches the opening and closing
direction of the double acting / spring return actuator.
b) Do not apply any end loading to actuator output drive, and ensure the
actuator output drive and valve square are concentric to each other.
c) If possible for optimal setting and to reduce any misalignment between
actuator drive and valve square, the unit should be assembled in mid position.
d) The unit should be assembled in the vertical position as shown in figure 9 with
the valve securely held in place.
e) Apply a low strength anaerobic adhesive to valve fastener screw threads.
f) Fit actuator assembly as shown in figure 10 to valve taking care to centrally
locate anti-backlash coupling onto valve square and loosely tighten valve
fasteners.
g) Apply a low strength anaerobic adhesive to valve square clamp screw threads
and torque up screw / screws to value given in table 9.
h) Now torque up valves fasteners, see table 10 for tightening torques.
Table 10. Valve Fastener tightening torques
Yoke Size
Tightening Torque
Yoke 1 920 lbf.ins 104 Nm
Yoke 2 920 lbf.ins 104Nm
Yoke 3 1770 lbf.ins 200 Nm
i) Now operate assembly open and closed a few times to check correct function
and look for any alignment issues.
3.1.4 Disassembly of Valve Yokes and anti-backlash couplings.
Follow stages 3.1.1 to 3.1.3 but in reverse order.
Warning – Any fasteners including anti-backlash coupling clamp screws,
removed or loosened during disassembly, must be replaced with new
ones of the same grade, original fasteners must NOT be re-used.
Issue
G
Signed Date
D.G.W 08-01-20
Trading Estate Farnham Surrey England
Doc.No. TD202
Page 16 of 18
Installation, Operation & Maintenance Instructions Fisher 1068 series (Models 5i-15i)
ROTARY 1/4 TURN PNEUMATIC ACTUATORS
Suitable for use in safe area and hazardous gas/dust atmospheres (ATEX)
Table 11. Spring return actuator anti-backlash couplings
Actuator
Size
5i
7i
8i
9i
10i
Part description Part Number
Anti-Backlash Coupling (9mm) 1/2” GE97906X012
Anti-Backlash Coupling (11mm) 5/8” GE97906X022
Anti-Backlash Coupling (9mm) 1/2” GE97906X032
Anti-Backlash Coupling (11mm) 5/8” GE97906X042
Anti-Backlash Coupling (14mm) 3/4” GE97906X052
Anti-Backlash Coupling (19mm) 1” GE97906X062
Anti-Backlash Coupling (9mm) 1/2” GE97906X072
Anti-Backlash Coupling (11mm) 5/8” GE97906X082
Anti-Backlash Coupling (14mm) 3/4” GE97906X092
Anti-Backlash Coupling (19mm) 1” GE97906X102
Anti-Backlash Coupling (22mm) 1-1/4” GE97906X112
Anti-Backlash Coupling (27mm) 1-1/2” GE97906X122
Anti-Backlash Coupling (9mm) 1/2” GE97906X132
Anti-Backlash Coupling (11mm) 5/8” GE97906X142
Anti-Backlash Coupling (14mm) 3/4” GE97906X152
Anti-Backlash Coupling (19mm) 1” GE97906X162
Anti-Backlash Coupling (22mm) 1-1/4” GE97906X172
Anti-Backlash Coupling (27mm) 1-1/2” GE97906X182
Anti-Backlash Coupling (9mm) 1/2” GE97906X192
Anti-Backlash Coupling (11mm) 5/8” GE97906X202
Anti-Backlash Coupling (14mm) 3/4” GE97906X212
Anti-Backlash Coupling (19mm) 1” GE97906X222
Anti-Backlash Coupling (22mm) 1-1/4” GE97906X232
Anti-Backlash Coupling (27mm) 1-1/2” GE97906X242
Shaft
Diameter
12i
14i
15i
Anti-Backlash Coupling (14mm) 3/4” GE97906X252
Anti-Backlash Coupling (19mm) 1” GE97906X262
Anti-Backlash Coupling (22mm) 1-1/4” GE97906X272
Anti-Backlash Coupling (27mm) 1-1/2” GE97906X282
Anti-Backlash Coupling (14mm) 3/4” GE97906X292
Anti-Backlash Coupling (19mm) 1” GE97906X302
Anti-Backlash Coupling (22mm) 1-1/4” GE97906X312
Anti-Backlash Coupling (27mm) 1-1/2” GE97906X322
Anti-Backlash Coupling (22mm) 1-1/4” GE97906X332
Anti-Backlash Coupling (27mm) 1-1/2” GE97906X342
a) Couplings designed to suit Fisher 8580, 8590, V150, V200, V300, V500 and CV500 valves.
b) Value in parentheses is the valve square size.
Issue
G
Signed Date
D.G.W 08-01-20
Trading Estate Farnham Surrey England
Doc.No. TD202
Page 17 of 18
Installation, Operation & Maintenance Instructions Fisher 1068 series (Models 5i-15i)
ROTARY 1/4 TURN PNEUMATIC ACTUATORS
Suitable for use in safe area and hazardous gas/dust atmospheres (ATEX)
Table 12. Double acting actuator solid couplings
Actuator
Size
7i
8i
9i
10i
12i
14i
Part description Part Number
Solid Coupling (9mm)
Solid Coupling (11mm)
Solid Coupling (9mm)
Solid Coupling (11mm)
Solid Coupling (14mm)
Solid Coupling (19mm)
Solid Coupling (22mm)
Solid Coupling (14mm)
Solid Coupling (19mm)
Solid Coupling (22mm)
Solid Coupling (14mm)
Solid Coupling (19mm)
Solid Coupling (22mm)
Solid Coupling (27mm) 1-1/2”
Solid Coupling (19mm)
Solid Coupling (22mm)
Solid Coupling (27mm) 1-1/2”
Solid Coupling (19mm)
Solid Coupling (22mm)
Solid Coupling (27mm) 1-1/2”
Shaft
Diameter
1/2” GE97906X352
5/8” GE97906X362
1/2” GE97906X372
5/8” GE97906X382
3/4” GE97906X392
1” GE97906X402
1-1/4” GE97906X412
3/4” GE97906X422
1” GE97906X432
1-1/4” GE97906X442
3/4” GE97906X452
1” GE97906X462
1-1/4” GE97906X472
GE97906X482
1” GE97906X492
1-1/4” GE97906X502
GE97906X512
1” GE97906X522
1-1/4” GE97906X532
GE97906X542
15i
Solid Coupling (22mm)
Solid Coupling (27mm) 1-1/2”
1-1/4” GE97906X552
GE97906X562
a) Couplings designed to suit Fisher 8580, 8590, V150, V200, V300, V500 and CV500 valves.
b) Value in parentheses is the valve square size.
Issue
G
Signed Date
D.G.W 08-01-20
Trading Estate Farnham Surrey England
Doc.No. TD202
Page 18 of 18
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