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Installation, Operation and Maintenance Manual
Bettis GVO-HP-SR/FS Linear
Gate Valve Operator
E-90090007 Rev. 0
April 2022
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Notes
April 2022
Installation, Operation and Maintenance Manual
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This page is intentionally left blank
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Installation, Operation and Maintenance Manual
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Table of Contents
Section 1: Safety Warning
Safety Warning........................................................................................................1
Section 2: Introduction
2.1 General Service Information .......................................................................... 2
2.2 Denition of Terms ........................................................................................ 2
2.3 Scope ............................................................................................................ 3
2.4 Model Identication ...................................................................................... 3
Section 3: Storage Instructions
Storage Instructions.................................................................................................5
Table of Contents
April 2022
Section 4: Operation
4.1 SR Operator .................................................................................................. 6
4.2 FS Operator ................................................................................................... 6
Section 5: Preparation
5.1 Tools ............................................................................................................. 7
5.2 Pre-Installation Verication ........................................................................... 8
Section 6: Installation
6.1 Notes .......................................................................................................... 12
6.2 Lifting ......................................................................................................... 13
6.3 Installation .................................................................................................. 14
6.3.1 Operator Installation ........................................................................ 14
Section 7: Maintenance
7.1 Regular Maintenance ..................................................................................18
7.2 Disassembly ................................................................................................ 18
7.3 Inspection and Cleaning .............................................................................. 23
7.4 Reassembly ................................................................................................. 24
iTable of Contents
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Table of Contents
April 2022
Section 8: Operator End Stop Adjustment
Section 9: Testing and Troubleshooting
Section 10: Document Revision
List of Tables
List of Figures
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8.1 SR - End Stop Adjustment Conditions .......................................................... 29
8.2 FS - End Stop Adjustment Conditions...........................................................30
9.1 Testing ........................................................................................................ 33
9.2 Troubleshooting ..........................................................................................33
Document Revision................................................................................................36
List of Tables...........................................................................................................37
List of Figures.........................................................................................................38
Appendix A: List of Drawings
A.1 Typical Assembly GVO-HP-SR ...................................................................... 39
A.2 Typical Assembly GVO-HP-FS ...................................................................... 41
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Installation, Operation and Maintenance Manual
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Section 1: Safety Warning
All personnel involved should read and understand all applicable sections of this manual
before attempting to install, operate, service, or perform maintenance on any operators.
Adhere to any tags, warning labels, or instructions present on the operator. These may
provide information more specic and signicant regarding the operator than this general
manual can.
It is the responsibility of the user to ensure proper safety. Always take necessary
precautions and utilize proper personal protective equipment when dealing with
compressed air, compressed hydraulic uid, pinch points, and electricity.
It is necessary to rig and lift valve and operator separately. Service personnel needs to
ensure the lifting capacity of the crane/hoist/rigging is appropriate for the desired load.
Block the power gas supply and depressurize the system before attempting to
install or service. Isolate the power gas from controls if the operator is supplied with a
control system.
Caustic gases and uids may be contained in the operators and valves in most applications.
Vent all poisonous or ammable gases and store all liquids in a safe location to prevent
personnel injury. Discharge at sonic velocity may occur when venting or releasing pressure;
service personnel must utilize proper hearing protection.
Section 1: Safety Warning
April 2022
CAUTION
!
Springs are under compression. Do not disassemble any part of the spring cartridge.
The following are general instructions since there are variations of linear operators
and valves. It is critical to install the operator properly so that performance and safety
are guaranteed. Any technicians using the following instructions must be trained and
knowledgeable regarding valve operators and valves.
CAUTION
!
Go through the above instructions to help prevent personnel injury, property damage, and
damage to the operator.
Please refer to the applicable section for details and further information.
Safety Warning
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Section 2: Introduction
April 2022
Installation, Operation and Maintenance Manual
Section 2: Introduction
2.1 General Service Information
This Installation, Operation and Maintenance (IOM) manual is for Bettis™ GVO Series
Hydraulic Spring-Return Valve Operator (type SR or FS). Failure to comply with installation,
operation, and maintenance instructions will void the warranty and may result in severe
injury and/or property damage.
2.2 Denition of Terms
The abbreviations included in this IOM manual are listed in Table 1.
Table 1. Denition of Terms
Ter m Denition
IOM Installation, Operation and Maintenance
GVO Gate Valve Operator Series
HP High Pressure Hydraulic
SR Spring Stroke – Drive Rod (or Piston Rod) in Extension
ES Spring Stroke – Drive Rod (or Piston Rod) in Retraction
ESD Emergency Shutdown
ID Inside Diameter (in.)
OD Outside Diameter (in.)
BCD Bolt Circle Diameter
MOT Maximum Operator Travel
MVT Maximum Valve Stem Travel
MAWP Maximum Allowable Working Pressure
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WARNING
!
If not observed, user incurs a high risk of severe damage to operator and/or fatal injury
to personnel.
CAUTION
!
If not observed, user may incur damage to operator and/or injury to personnel.
NOTE:
Advisory and information comments provided to assist maintenance personnel to carry out
maintenance procedures.
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Introduction
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2.3 Scope
This manual is a resource for technicians involved in the installation, operation, and
maintenance of Bettis™ GVO Series Hydraulic Spring-Return Valve Operators (type SR
or FS). It serves as a guide and must be thoroughly understood prior to any work on the
operators. For any questions, please contact the manufacturer.
2.4 Model Identication
The Bettis GVO Hydraulic Series represents a broad range of eld-proven linear
valve operators suitable for automating most types of rising stem valves in safety
shutdown and control applications. Figure 1 shows the typical assembly drawing of
Bettis GVO-HP-SR operator.
Figure 1 Typical Assembly of GVO-HP-SR
Section 2: Introduction
April 2022
Introduction
Table 2. Parts List
Item Description Qty
1 Drive Rod 1
8 End Cap 1
11 Piston 1
17 Cylinder 1
80 Connector Assembly 1
140 Pedestal Assembly 1
181 Compression Spring 1
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Section 2: Introduction
April 2022
The catalog lists standard models intended to cover a wide range of sizes and applications.
Customers can use Figure 2 to identify the key operator characteristics. If not included
in the catalog lists, custom designed models are also available for specialized thrust or
stroke requirements or those beyond the scope of this listing (including linear hydraulic
operated operators).
Figure 2 Linear Valve Operator Model Designation
Cylinder ID*
4" thru 24"
Stroke Length*
Maximum designed stroke listed
(adjustment can reduce stroke by up to 2")
Drive Rod OD*
Actuator Series
GVO - Bettis Gate Valve Operator
Installation, Operation and Maintenance Manual
## X ## X ### - GVO - HP - YY - ZZ
*Consult the factory for additional sizes or options
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Options and Overrides*
MJ - Manual Jackscrew
(only extends drive rod)
Actuator Function
SR - Spring-Return
FS - Fail-Safe
Actuator Type*
HP - High Pressure Hydraulic
To illustrate, a model number of 16x10x2.50-GVO-LP-SR-MH is an operator with a 16 in.
inside diameter cylinder, a 10 in. maximum stroke (adjustable down to 8 in. stroke),
a 2.50 in. outside diameter drive rod, and is low-pressure pneumatic spring-return with a
manual hydraulic override.
Operators will also be identied with an individual serial number. Figure 3 shows the form
of the Bettis serial number.
Figure 3 Linear Valve Operator Serial Number
## - ###### - # . #
BettisTM Internal Code
Bettis Sales Order #
(not purchase order #)
Unit #
Sales Order Line #
For example, a serial number of 00-123456-2.1 represents the rst unit on the second line
of sales order 123456.
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Introduction
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Section 3: Storage Instructions
Proper storage is required when the operator will not be used immediately.
1. Remove all dirt, dust, grease, and contaminants from the exposed drive rod (1)
surface by using a soft cloth dampened with an appropriate oil-based solvent.
Avoid using abrasive material when cleaning rod surfaces.
2. Exposed drive rod (1) must be protected to avoid damage to the surface.
a. FS style operator: Drive rod is retracted into the cylinder (only a portion
of the rod is exposed). Lightly grease the exposed surface and wrap with
protective material if necessary.
b. SR style operator: Drive rod is fully extended from the cylinder.
The user must protect the rod surface to avoid damage (which in turn
will compromise and/or damage the sealing capability during operation).
Lightly grease and wrap the rod surface with protective material.
3. Lightly lubricate all exposed threads and unpainted surfaces (for example, bottom
of pedestal plate).
4. Cover the operator to prevent the accumulation of dirt and debris.
5. Repeat the storage steps listed above to ensure the proper storage condition
(in case the operator will be moved and stored again).
An indoor environment is the ideal storage condition for the operator. For additional
information on storage, please contact the manufacturer.
Section 3: Storage Instructions
April 2022
Storage Instructions
Storage Instructions
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Section 4: Operation
April 2022
Section 4: Operation
4.1 SR Operator
SR type operator contains spring which is located above the piston. Therefore, under spring
stroke, spring force will act on the piston to push the drive rod (1) into fully extended
position. To retract the drive rod (1), pressure is applied through the cylinder ports on the
pedestal assembly (140) to exert force on the drive rod side of the piston (11), pulling the
drive rod (1) into the operator. Upon loss of supply pressure, the operator will fully extend
the drive rod (in other words, valve stem in retraction).
4.2 FS Operator
FS type operator contains a spring that is located below the piston. Therefore, under spring
stroke, spring force will act on the piston to pull the drive rod (1) to fully retracted position.
To extend the drive rod (1), pressure is applied through ports on the end cap
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(8) to exert force on the cap side of the piston (11), pushing the drive rod (1) out of the
operator. Upon loss of supply pressure, the operator will fully retract the drive rod (in other
words, valve stem in extension).
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Operation
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Section 5: Preparation
Before beginning to work (installation, operation, or maintenance) on the operator,
please be sure to read through all the applicable sections of the manual to ensure that you
are familiar with the expected sequence of events.
5.1 Tools
Listed are the recommended tools and materials that may be required when working on
the operator. Depending upon specic operator/task, additional tools and materials may
be required.
• Vernier/measurement ruler
• A set of SAE combination wrenches and sockets
• A set of SAE hex keys
• Strap or pipe wrench (small to medium sizes)
• Large size ring wrench/hammer wrench
• Torque wrench with suitable rating
• Lifting device or a crane, complete with slings, a pair of shackles or clevises
• Power gas supply rated within specic pressure range in the supplied schematics
• Hydraulic power unit
• Block and bleed test valve assembly
• Anti-seize (lubricant) compound
• Pipe thread sealant (e.g.; Teon tape, pipe dope)
• Commercial solvent (e.g.; Varsol)
Section 5: Preparation
April 2022
Preparation
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Section 5: Preparation
April 2022
Installation, Operation and Maintenance Manual
5.2 Pre-Installation Verication
NOTE:
GVO linear operators shipped mounted to valves have their travel adjusted properly by the
manufacturer and do not require further adjustment. Install valve with GVO linear operator
directly in line.
GVO linear operators shipped without a valve have their travel adjusted based on the
valve top works (if available). Verify and ne-tune (if needed) the travel adjustment when
installing the operator on the valve.
Before initial installation of the operator on the valve, there are several critical
measurements and markings to make. These measurements and markings cannot be
made after the operator is installed and are helpful for checking or adjusting travel,
please refer to Figure 4 when making measurements.
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NOTE:
Marks should be made with a marker, wax pen, or another tool that will not damage the
sealing surfaces of the operator.
Type FS style operator is used for illustration. Follow the same instruction for the SR style
operator (except for spring function).
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Preparation
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Figure 4 Measurement of Travel Adjustment for Valve and Operator
Mark #1
Mark #2
Section 5: Preparation
April 2022
Preparation
Mark #3
Mark #4
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Section 5: Preparation
April 2022
1. Drive the valve stem fully into the valve body, ensuring that it is fully retracted
2. Actuate the operator to fully extend the drive rod (1). Mark on the swivel
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(consult valve manufacturer for procedure if required). If equipped, remove
valve lever, handwheel, gear and/or jam nut/stop nut per valve manufacturer
instructions. Use a soft mallet if striking the valve stem’s threaded end to retract
valve stem fully. Mark on the valve stem where it and the top of the valve ange
align. This is “MARK #1”.
Using the Vernier/measurement ruler, measure from the top of the valve ange to
the end of the valve stem. Record this value as “A”.
A = ___________
connector (80) the distance “A” up from the bottom of the adapter plate. This is
“MARK #2”.
Using the Vernier/measurement ruler, measure from the mark to the bottom of
the stem nut. Record this value as “B”.
B = ___________
Also measure from the top of the body of the swivel connector (80) to the bottom
of the cylinder plate (4) in pedestal assembly (140). Record this value as “X”.
X = ___________
3. Pull the valve stem fully out of the valve body, ensuring that it is fully extended.
Mark on the valve stem a distance “B” down from the top of the valve stem. This is
“MARK #3”.
Measure from the top of the valve ange to the top of the valve stem using the
Vernier/measurement ruler. Record this value as “Y”.
Y = ___________
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Preparation
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4. Actuate the operator (spring stroke) to fully retract the drive rod (1). Mark on
the drive rod (1) where it and the bottom of the cylinder plate (4) align (do not
damage the drive rod’s OD sealing surface). This is “MARK #4”.
Using the Vernier/measurement ruler, measure from the top of the body of the
swivel connector (80) to the bottom of the cylinder plate (4). Record value “Z”.
Z = ___________
NOTE:
This will be power stroke by applying pressure through the cylinder plate ports
(if the operator is “SR” type).
CHECK: Perform the below calculations:
Y - A = Maximum Valve Stem Travel (MVT) = ___________
Section 5: Preparation
April 2022
X - Z = Maximum Operator Travel (MOT) = ___________
If maximum operator travel (MOT) is less than or equal to maximum valve stem travel
(MVT), that means end stop (32) is factory set properly. Further verication is required
during the valve installation.
If MOT is larger than MVT, refer to Section 8 for details on how to adjust the operator travel
stop during valve installation.
Preparation
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Section 6: Installation
April 2022
Section 6: Installation
6.1 Notes
CAUTION
!
The areas inside the pedestal around the connector are PINCH POINTS for hands
and ngers.
CAUTION
!
Line pressure can cause a valve to open or close unexpectedly. It is recommended for the
installation to be performed on the valve with no pressure in the line.
• GVO linear operators shipped mounted to valves have their travel adjusted
properly by the manufacturer and do not require further adjustment. Install valve
with GVO linear operator directly in line.
• If the valve is not shipped with the operator, the valve might need to be prepared
for installation. Any device that would restrict the free movement of the valve
stem or prevent installation of the operator (e.g.; handwheel or stem nut) must be
removed. Consult valve manufacturer for instructions.
• When connecting to power gas supply, be sure to use internally clean pipe or
tubing, and assure appropriate pressure and ow capacity for the controls.
Clean, dry supply gas will help to ensure trouble-free operation.
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• Before beginning installation check valve and operator for compatibility.
Verify connector thread matches valve stem. Verify operator mounting
plate/valve gear ange connection (e.g., bolt pattern, and alignment bosses).
Verify mounting hardware bolts, studs, lock washers, etc. are the proper amounts,
lengths, and sizes.
• Ensure threads and mating surfaces are free of dirt and debris.
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6.2 Lifting
CAUTION
!
The operator’s built-in lifting lugs/eyes are designed with the capacity to lift the GVO
operator and the pedestal. Additional lifting support is required to lift the operator
with a valve attached. Always use an appropriately rated crane/hoist and appropriate
straps/chains when raising and lowering the operator.
Vertical Lifting:
Before lifting the operator, make sure that the valve has been disconnected from the
operator. When handling and installing the operator, care must be taken, especially during
rigging and lifting the operator. The operator should only be lifted from the lifting lugs
located on the end cap, shown in Figure 5.
NOTE:
Operators should be lifted with force acting as vertically as possible. Spreader bars or other
lifting aids may be required to maintain a vertical lift on the lugs or eyebolts. Always lift the
operator with a 60° or greater lifting angle measured from the horizontal plane.
Section 6: Installation
April 2022
Figure 5 Lifting Method
Lifting
Angle
Installation
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Section 6: Installation
April 2022
6.3 Installation
6.3.1 Operator Installation
1. For closed pedestal operators, removal of the window(s) from the operator
pedestal is required to provide access to the connector.
2. Complete the measurements in Section 5.2 to aid in the assembly of operator to
valve and to ensure that the end stop is set properly.
3. If intent is to position operator manually, leave tubing in place. If intent is to
use temporary hydraulic power supply, mark locations then disconnect the
appropriate tubing and connect the power supply (a block valve can be used to
maintain pressure in the cylinder locking the drive rod in position). Do not exceed
the operator MAWP.
4. While extending the drive rod (1), a controlled stroking speed can be used to travel
the operator while screwing/rotating the stem nut section of the connector onto
the valve stem.
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6.3.1.1 Operator Installation Conditions
1. Condition A. Valve Stem Extended/Operator Drive Rod Retracted
(typically FS style operator with drive rod retracted)
2. Condition B. Valve Stem Retracted/Operator Drive Rod Extended
(typically SR style operator with drive rod fully extended)
CAUTION
!
Jamming the stem nut into the top of the valve stem may damage the threads; if damage
occurs repair is required before attempting to screw the stem nut onto the valve stem.
Side loading of the valve stem while lowering the operator onto the valve can cause
damage to the valve or operator. Ensure rigging will allow sufcient control of the position
and speed at which the operator is lowered onto the valve.
NOTE:
Left Hand Rotation of the stem nut is most common. Determine thread rotation before
attempting to screw the stem nut sections onto the valve stem.
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Condition A: Valve Stem Extended/Operator Drive Rod Retracted (typically FS style
operator with drive rod retracted into cylinder)
Method 1:
1. Apply anti-seize to valve stem thread.
2. With the operator’s drive rod (1) fully retracted, lower the operator until the stem
nut section contacts the valve stem.
3. Continue to lower the operator as you spin/rotate the operator about the valve
stem to engage with the stem nut. Measurement “B” taken in Section 5.2
will provide the required engagement of the stem nut onto the valve stem.
NOTE:
The stem nut may have to be held/restrained by a vise grip/pipe wrench inside the pedestal
so it will rotate with the operator.
The valve stem may not remain in fully extended position due to the weight of the
operator. Threading the swivel connector (80) onto the valve stem will bring the valve stem
back to fully extended position.
Section 6: Installation
April 2022
4. Once full engagement is achieved, advance the stem nut a half turn to ensure
operator stroke is controlled by internal stop of operator and is not limited by
valve stroke.
5. At the point when the pedestal plate is in full contact with the valve gear ange,
position the controls and windows to the required location and install the
mounting hardware.
6. Slowly extend the drive rod. When it is fully extended, verify the connector
can rotate a few degrees. This conrms that the valve travel is controlled by
the internal stop of the operator and operator is not jamming the gate in the
valve body.
7. If the operator end stop needs adjustment, refer to Section 8.
8. Once operator travel is conrmed, the set screws (98) in the connector assembly
can be tightened to lock into position.
Installation
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Section 6: Installation
April 2022
Method 2:
NOTE:
The following Method 2 may be used if it is possible to get a hand/wrench into the pedestal
(if so equipped) to turn the stem nut section onto the valve stem. If this is not possible,
then use Method 1 above.
1. Apply anti-seize to valve stem thread.
2. Guide and lower the operator over the valve stem until the stem nut section is
3. Hold the operator in position and slowly extend the drive rod (1) until the stem nut
4. Lower the operator while simultaneously retracting the drive rod (1) as you thread
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about 1 in. away.
contacts the valve stem.
the connector onto the valve stem. Continue this process until contact is made
between the pedestal plate and the valve gear ange.
NOTE:
The valve stem may not remain in a fully extended position due to the weight of the
operator. Threading the connector onto the valve stem will bring the valve stem back to a
fully extended position.
5. Measurement “B” taken in Section 5.2 will provide the required engagement of
the stem nut onto the valve stem.
6. Once full engagement is achieved, advance the stem nut a half turn to ensure
operator stroke is controlled by internal stop of operator and is not limited by
valve stroke.
7. When the pedestal plate and the valve gear ange are in contact, make sure
the control assembly/plate is oriented in the required position. Then install the
mounting hardware.
8. Slowly extend the drive rod. When it is fully extended, verify the connector
can rotate a few degrees. This conrms that the valve travel is controlled by
the internal stop of the operator and operator is not jamming the gate in the
valve body.
9. Once operator travel is conrmed the setscrews (98) in the connector assembly
can be tightened to lock into position.
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Condition B: Valve Stem Retracted/Operator Drive Rod Extended (typically SR style
operator with drive rod fully extended)
Method 1:
1. Apply anti-seize to valve stem thread.
2. Spin/rotate the operator around the valve stem to engage the valve stem into
the stem nut while slowly lowering the operator. The stem nut may have to be
retained by the operator by a vise grip or pipe wrench.
3. Measurement “B” taken in Section 5.2 will provide the required engagement of
the stem nut onto the valve stem. Once the full engagement is achieved, advance
the stem nut half a turn to ensure operator stroke is controlled by internal stop of
the operator and is not limited by valve stroke.
4. Once full contact is made between the pedestal plate and valve gear ange,
position the control/windows as required before installing mounting bolts and
tie rods.
5. Slowly retract the drive rod, when it is fully retracted verify, the connector can
rotate a few degrees. This conrms the valve travel is controlled by the end stop of
the operator and the operator is not jamming the gate in the valve body.
6. Once operator travel is conrmed the setscrews (98) in the connector assembly
can be tightened to lock into position.
Section 6: Installation
April 2022
Method 2:
NOTE:
The following Method 2 may be used if it is possible to get a hand/wrench into the pedestal
(if equipped) to turn the stem nut section onto the valve stem. If this is not possible, then
use Method 1 above.
1. Apply anti-seize to valve stem thread.
2. Lower the operator onto the valve until the valve stem contacts the stem nut
section of the connector.
3. While slowly lowering the operator screw/rotate the stem nut section to engage it
onto the valve stem until the pedestal plate fully contacts the gear ange.
4. Measurement “B” taken in Section 5.2 will provide the required engagement of
the stem nut onto the valve stem. Once full engagement is achieved, advance the
stem nut a half a turn to ensure operator stroke is controlled by internal stop of
operator and is not limited by valve stroke.
5. Slowly retract the drive rod, when it is fully retracted verify the connector can
rotate a few degrees. This conrms the valve travel is controlled by the end stop of
the operator and operator is not jamming the gate in the valve body.
6. Once operator travel is conrmed the setscrews (98) in the connector assembly
can be tightened to lock into position.
Installation
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Section 7: Maintenance
April 2022
Section 7: Maintenance
7.1 Regular Maintenance
• If possible, remove line pressure prior to any maintenance.
• Under normal operating conditions, the only servicing required is seal and
gasket replacement.
• In addition to the standard recommended tools and materials Section 5.1,
the following tools and materials are recommended for maintenance:
— Dow corning #111 grease or equivalent
— A tube of sealant (for example, silicone)
— Leak detecting uid (for example, soapy water)
• Seals, gaskets, and other applicable soft parts are available from the manufacturer
as repair kits. Lubricant, sealant and/or other materials are also available from
the manufacturer.
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7.2 Disassembly
NOTE:
Refer to this section only when seals need to be replaced. Refer to Section 9 to determine
when seals need to be replaced.
CAUTION
!
Spring is under load. To avoid personal injury, do not attempt to disassemble or tamper
with spring cartridge assembly during regular maintenance. For questions regarding the
spring cartridge, please contact the manufacturer.
All parts described are indicated by a corresponding number in parenthesis. Please refer
to Figure 7 or Figure 8 to identify the specied components. The parts cited are typical to
linear operators. A special operator might have different parts which should be installed in
the same manner as they are removed.
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Maintenance
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NOTE:
Type FS style operator is used for illustration. Follow the same instruction for SR style
operator (except for spring function).
Please follow the steps below for FS/SR Operators:
1. Make sure power supply is shut off and pressure is released from the operator and
controls prior to disassembly.
2. For FS style operator: Remove pressure from the end cap (8) to fully retract the
drive rod (1). For SR style operator: Apply pressure to the cylinder plate (4) ports to
fully retract the drive rod.
Refer to Figure 6 and mark the following locations:
a. Mark where the bottom of the cylinder plate (4) falls on the drive rod (1).
This is “MARK A”.
b. Mark the bottom of the stem nut on the valve stem. This is “MARK B”.
Section 7: Maintenance
April 2022
NOTE:
“MARK A” and “MARK B” are to facilitate reassembly to match original
valve/operator setting.
Marks should be made with a marker, wax pen, or other tool that will not damage the sealing
surfaces of the operator.
Maintenance
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Section 7: Maintenance
April 2022
Figure 6 Markings for Maintenance
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Mark A
Mark B
20
Table 3. Parts List
Item Description Qty
1 Drive Rod 1
4 Cylinder Plate 1
8 End Cap 1
11 Piston 1
17 Cylinder 1
80 Connector Assembly 1
181 Compression Spring 1
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3. Mark the end stop (32) engaged position on top of end cap (8).
A. For FS Type Operator:
NOTE:
Operator is under spring load. Remove the end stop completely to reduce the spring load
during disassembly to avoid injury.
Do not rotate/remove end stop (32) under spring load. Move piston away prior to removal.
a. Apply pressure to end cap (8) ports to move drive rod (1) away from the
end stop (32).
b. Remove the end stop cover (33) and end stop cover seal (57) with the
piston held in position.
Section 7: Maintenance
April 2022
NOTE:
Remember to mark the end stop (32) with the current engaged position in order to aid
in reassembly.
CAUTION
!
Remove the end stop cover carefully (33). Pressurized uid may escape between the
threads in the end stop (32) and the end cap (8).
c. Unscrew the end stop (32) slowly while end cap (8) ports are still pressurized.
CAUTION
!
Do not remove the end stop (32) completely. Pressurized uid may escape between the
threads in the end stop (32) and the end cap (8).
NOTE:
Unscrew the end stop in stages (approximately 4 to 5 turns in rst trial, then reduce the
number of turns to 2 to 3 if more steps are needed), then remove the pressure in the end
cap to verify if spring force is still acting against the end stop (32). Repeat step c until end
stop (32) is free from spring load.
Maintenance
d. Make sure pressurized uid is completely released from the unit before
proceeding to next step (that is step 4).
21
Page 26
Section 7: Maintenance
April 2022
B. For SR Type Operator:
Since spring load is not acting against the end stop (32), remove end stop cover (33)
directly and mark the end stop (32) engaged position to facilitate reassembly.
4. Mark the port and tubing locations to facilitate reassembly. Disconnect
5. Loosen setscrew (97), (98), and (99) in swivel connector (80). Unthread the
6. Remove stay rod nuts (91), lift lugs (35), end cap (8), upper cylinder seal (55).
Do not remove stay rod nuts (91) completely from stay rod (22) until spring load is cleared.
Allowing the end cap to move up slightly will release the spring preload inside the operator.
Loosening stay rod nuts (91) in pairs (with one across the other) will prevent sudden
movement of the end cap (8).
Installation, Operation and Maintenance Manual
E-90090007 Rev. 0
tubing if required (but can leave the tting on the operator components to
ease reassembly).
stem nut from the valve stem to disengage valve stem from operator connector
(if removal of the operator from the valve is required). Free the operator from valve
by removing the mounting bolt. Then, unthread the connector assembly (80) from
the drive rod (1). This will allow the drive rod (1) and piston (11) to be removed
completely from the operator.
CAUTION
!
7. Remove only enough stay rods (22) to allow access for the removal of cylinder (17)
and piston (11).
8. Remove cylinder (17) from the operator. When removing the cylinder, ensure the
cylinder is not tilted and the inside surface of the cylinder is not rubbing against
the piston.
NOTE:
Remove the spring cartridge prior to lifting the cylinder for SR operators.
9. Remove the piston (11) with the drive rod (1) attached to it. Ensure that the drive
rod (1) is not rubbing against the cylinder plate (4) of the pedestal assembly (140)
when removing it.
22
Maintenance
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Installation, Operation and Maintenance Manual
E-90090007 Rev. 0
NOTE:
For FS operator, the spring cartridge located below the piston can only be removed after
piston and drive rod is removed from the operator.
10. Go to the next step (that is step 11) if the piston center seal (52) will not be
replaced. There is no need to separate the piston from the drive rod.
Remove drive rod hex nut/jacknut (90), piston (11), piston seal (72), piston wear
ring (42), and piston center seal (52). When removing the hex nut, x the drive rod
by clamping the at surface at its bottom securely with some mechanical means
(for example, bench vise), to prevent the drive rod from turning with the nut.
To remove a jacknut, remove all jackscrews rst then unthread the jacknut.
11. Remove lower cylinder seal (55), drive rod guide (40), drive rod seal (70), and
wiper (44) from the cylinder plate of pedestal assembly (140).
NOTE:
Operator seal can be replaced with the pedestal assembly (140) remained on the valve.
Section 7: Maintenance
April 2022
7.3 Inspection and Cleaning
• All parts indicated are noted in Figure 7 and Figure 8. Before starting the
reassembly process, perform the following:
• Thoroughly clean all parts except gaskets (if supplied) with Varsol or equivalent.
• Inspect all parts, checking in particular any parts/features on parts that seal or rub
against another part.
— Check internal surface of the cylinder (17) for scoring, scratches,
or other wear.
— Check all metal parts for wear, corrosion, and physical damage.
• Ensure cleaned parts are covered if stored outside.
Maintenance
23
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Section 7: Maintenance
April 2022
7.4 Reassembly
NOTE:
Refer to Section 7.2 and reassemble the unit in reverse order. Make sure to reassemble
parts in the same orientation as before. Pay extra attention to the following items below.
Make sure all operator component parts are cleaned and lubricated (if required) prior to
installing seals.
1. Use only new replacement seals (available as an operator-specic kit from
Emerson Process Management).
2. Lubricate seals, rods, and cylinder bore with a generous amount of
recommended grease.
3. Lubricate bushing and guides with a light coating of recommended grease.
4. Apply recommended grease/lubricant to the sealing surfaces and around the
cylinder plate bore when installing the drive rod (1) and piston (11) onto the
pedestal assembly (140). Do not rub the bore on cylinder plate.
5. If piston (11) and drive rod (1) are disassembled, (which means piston center seal
(52) will be replaced) make sure to apply recommended grease prior to attaching
the drive rod (1) to the piston (11). Apply thread locking adhesive (for example,
Loctite) to thread(s) of hex nut or jackscrews.
a. Fix the drive rod by securely clamping the at surface on its bottom
using some mechanical means if using a hex nut. Refer to Table 4 for
torque per specications.
Installation, Operation and Maintenance Manual
E-90090007 Rev. 0
Table 4. Specication of Piston Hex Nut Tightening Torque
Piston Hex Nut Size
(-)
1/2 NC 50
5/8 NC 90
3/4 NC 160
7/8 NC 240
1 - 8UN 370
1-1/4 - 8UN 800
1-1/2 - 8UN 1500
1-3/4 - 8UN 2400
Tightening Torque
(lbf.ft)
24
Maintenance
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Installation, Operation and Maintenance Manual
E-90090007 Rev. 0
b. If using a jacknut, install the jacknut handtight. Then, install the
jackscrews (make sure to apply Loctite or equivalent) in a diagonal pattern
and refer to Table 5 for torque specications.
Table 5. Specication of Jackscrew in Jacknut Tightening Torque
Section 7: Maintenance
April 2022
Piston Hex Nut Size
(-)
1/2 NC 100
5/8 NC 185
3/4 NC 300
7/8 NC 450
Tightening Torque
(lbf.ft)
6. When installing the cylinder (17), grease the cylinder bore with the recommended
grease/lubricant prior to installing over piston (11). Make sure to install the lower
cylinder seal prior to lowering the cylinder onto the cylinder plate. Ensure that the
cylinder end is seated properly on cylinder plate and not pinching on the seal. Be
careful not to damage the piston seal when passing over the piston (11). Try to
maintain as vertical as possible when lowering down the cylinder).
7. When installing the end cap (8), make sure to install the upper cylinder seal
beforehand. Apply grease to aid in maintaining the seal in position while
lowering the end cap (8) to cylinder (17). Make sure ports orientation is correct
and the seal is seated properly between end cap and the cylinder before the
installation of stay rods.
NOTE:
For spring-return operator, the end cap will be sitting on top of drive rod (for FS operator)
or on top of spring cartridge (for SR operator), not on the cylinder due to spring preload.
Maintenance
25
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Section 7: Maintenance
April 2022
8. Apply anti-seize compound on the threads of stay rods (22) before installing to
Table 6. Specication of Stay Rod Nut Tightening Torque
Installation, Operation and Maintenance Manual
E-90090007 Rev. 0
cylinder plate. Tighten stay rod nuts (91) evenly, progressing from nut to nut
diagonally (not to adjacent nuts) until all nuts are torqued. Table 6 provides the
required tightening torques for the stay rod nuts.
Piston Hex Nut Size
CAUTION
!
(-)
3/8 NC 22
1/2 NC 45
5/8 NC 100
3/4 NC 150
7/8 NC 200
1 NC 300
1-1/8 – 8UN 480
1-1/4 – 8UN 675
1-3/8 – 8UN 900
1-1/2 – 8UN 1100
1-5/8 – 8UN 1450
1-3/4 – 8 UN 2000
Tightening Torque
(lbf.ft)
Ensure that the seals on cylinder plate (4) and end cap (8) are seating properly with ends of
cylinder (17) while tightening stay rod nuts (91).
9. When installing the end stop to the end cap:
a. For SR operator: Engaged the end stop to previously marked position.
b. For FS operator: Engaged the end stop until it makes contact with the
drive rod. Further steps are required to reach previously marked position.
10. Apply anti-seize to threads and install swivel connector (80) onto drive rod (1).
Ensure that the top of the connector body ts tight against the shoulder on the
drive rod (1) and it cannot be threaded any further. Secure connector body with
hex socket setscrew (97).
11. Refer to Section 8 for operator stop adjustment (if needed). Refer to Section 5.2 to
verify operator travel and valve stem engagement.
26
Maintenance
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Installation, Operation and Maintenance Manual
E-90090007 Rev. 0
NOTE:
Apply anti-seize and thread stem nut onto valve stem to “MARK B” (made in Section 7.2).
Secure stem nut with two hex socket setscrews (98).
Check operator travel by slowly moving the operator to fully retract drive rod (1).
a. Verify that “MARK A” (made in Section 7.2) aligns with the bottom of the
cylinder plate (4) and;
b. Verify that “MARK B” aligns with the bottom of the stem nut.
If both ‘A’ and ‘B’ above are true, this indicates that the adjustment of the travel was not
disturbed during maintenance.
NOTE:
Perform operator leak tests upon completion of reassembly with supply pressure.
Section 7: Maintenance
April 2022
Maintenance
27
Page 32
Section 8: Operator End Stop Adjustment
April 2022
Installation, Operation and Maintenance Manual
E-90090007 Rev. 0
Section 8: Operator End Stop Adjustment
NOTE:
GVO linear operators are shipped with their travel adjusted based on the valve topworks
(if available). Adjustment may require if the pre-installation verication (Section 5.2)
indicates that MOT is larger than MVT.
Each type of operator (SR and FS) will fall into one of two conditions (A or B) if the end stop
is out of adjustment.
NOTE:
Typically, valve with operator should have its travel limited by operator stops (preferably,
MVT is 1/8 in. more than MOT) in order to avoid/prevent any damage to the valve.
Refer to Section 8.1 and Section 8.2 if adjustment is needed.
Refer to Section 4 to conrm the operational style of the fully extended or fully retracted
position of each type of operator (SR and FS).
If the end stop is out of adjustment, the operator will fall into one of two conditions
(with the assumption that valve stem engagement is according to Section 5.2
measurement “B” plus 0.5 to 1 stem pitch):
Condition A: MOT is more than MVT, which means travel stops on valve instead
of operator.
Condition B: MOT is less than MVT by more than 1 full pitch of valve stem thread,
which means there is potential leakage due to under travel of valve.
28
Operator End Stop Adjustment
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Installation, Operation and Maintenance Manual
E-90090007 Rev. 0
Section 8: Operator End Stop Adjustment
8.1 SR - End Stop Adjustment Conditions
Condition A: MOT is more than MVT, which means travel stops on valve instead
of operator.
NOTE:
In Condition A, the operator travel needs to be decreased to have valve stroke limited by
operator internal stops.
1. Install operator on valve and adjust the stem nut as directed in Section 6.
(Installation).
2. Apply hydraulic pressure to cylinder plate ports to fully retract the drive rod (1)
until the operator stops.
3. Remove the end stop cover (33) and end stop cover seal (57) to access the end
stop (32).
4. The end stop (32) will be loose in the end cap (8).
5. Screw the end stop (32) into the end cap (8) until it stops by contacting the drive
rod (1).
6. Release hydraulic pressure through cylinder plate ports to allow piston to move
away from end stop (enough to allow one full turn of the end stop).
7. Screw the end stop (32) further into the end cap (8) by 1/8 in. which is a one full
turn of the end stop.
8. Reapply pressure to move the piston against end stop. Check that the end stop
(32) is now jammed and locked in place by the drive rod (1).
9. Install and tighten the end stop cover (33) and end stop cover seal (57) to lock-in
the travel adjustment.
10. Remove the existing “MARK #4”. Mark on the drive rod (1) where it and the
bottom of the cylinder plate (4) align. This is the new, corrected, “MARK #4”.
April 2022
Operator End Stop Adjustment
29
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Section 8: Operator End Stop Adjustment
April 2022
Condition B: MOT is less than MVT by more than 1 full pitch of valve stem thread, which
means potential leakage due to under travel of valve.
NOTE:
In Condition B, the operator travel needs to be increased to maximize valve travel.
1. Install operator on valve and adjust the stem nut as directed in Section 6.
(Installation).
2. Make sure to release the pressure through cylinder plate ports if the operator is
pressurized to allow piston to move away from end stop (32).
3. Remove the end stop cover (33) and end stop cover seal (57) to access the end
stop (32).
4. When the end stop is free, unscrew it from the end cap (8) two to four turns.
5. Reapply pressure slowly through cylinder plate ports to fully retract the drive rod
until the operator stops.
6. Screw the end stop (32) into the end cap (8) until it stops by contacting the drive
rod (1).
7. Release pressure through cylinder plate ports to allow piston to move away from
end stop (enough to allow one full turn of the end stop).
8. Repeat steps 7 to 10 of Condition A on previous page to complete the adjustment.
Installation, Operation and Maintenance Manual
E-90090007 Rev. 0
NOTE:
The fully retracted end of the operator travel has now been set.
8.2 FS - End Stop Adjustment Conditions
The operator needs to be pressurized to remove the spring load against the end stop (32)
during the adjustment of FS style operator (ensure end stop cover (33) is intact during the
pressurization). The pressure will reduce the force applied to the end stop by compressing
the spring, thus allowing the end stop (32) to be adjusted.
CAUTION
!
Do not remove the end stop (32) completely. Pressurized uid may escape between the
threads in the end stop (32) and the end cap (8) once the cover is removed, while the cylinder
is pressurized.
30
Operator End Stop Adjustment
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Installation, Operation and Maintenance Manual
E-90090007 Rev. 0
Condition A: MOT is more than MVT, which means travel stops on valve instead
of operator.
NOTE:
In Condition A, the operator travel needs to be decreased to have valve stroke limited by
operator internal stops.
1. Install operator on valve and adjust the stem nut as directed in Section 6.
2. Release pressure slowly through end cap (8) ports to fully retract the drive rod (1)
until the operator stops.
3. Remove the end stop cover (33) and end stop cover seal (57) to access the end
stop (32).
CAUTION
!
Pressurized uid may escape between the threads in the end stop (32) and the end cap (8)
once the cover is removed.
Section 8: Operator End Stop Adjustment
April 2022
4. The end stop (32) will be loose in the end cap (8).
5. Screw the end stop (32) into the end cap (8) until it stops by contacting the drive
rod (1).
6. Reapply pressure through the end cap (8) ports to move the piston (11) away from
the end stop (32).
CAUTION
!
Pressurized uid might leak through near the end stop (32) threads.
Move the piston (11) away from the end stop (32) as far as possible to allow sufcient time to
adjust the end stop (32).
7. Screw the end stop (32) further into the end cap (8) by 1/8 in., which is one full
turn of the end stop.
8. Depressurize the operator to fully retract the drive rod (1). Check that the end stop
(32) is jammed and locked in place by the drive rod (1).
9. Install and tighten the end stop cover (33) and end stop cover seal (57) to lock-in
the travel adjustment.
10. Remove the existing “MARK #4”. Mark on the drive rod (1) where it and the
bottom of the cylinder plate (4) align. This is the new, corrected, “MARK #4”.
Operator End Stop Adjustment
31
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Section 8: Operator End Stop Adjustment
April 2022
Condition B: MOT is less than MVT by more than 1 full pitch of valve stem thread, which
means potential leakage due to under travel of valve.
NOTE:
In Condition B, the operator travel needs to be increased to maximize valve travel.
1. Install operator on the valve and adjust the stem nut as directed in Section 6.
2. Release pressure slowly through end cap (8) ports to fully retract the drive rod (1)
until the operator stops.
3. Remove the end stop cover (33) and end stop cover seal (57) to access the end
stop (32).
CAUTION
!
Pressurized uid may escape between the threads in the end stop (32) and the end cap (8)
once the cover is removed.
Installation, Operation and Maintenance Manual
E-90090007 Rev. 0
4. The end stop (32) will be tightened or jammed against the drive rod (1).
5. Apply pressure through the end cap (8) ports to move the piston (11) away from
the end stop (32).
CAUTION
!
Air might leak through near the end stop (32) threads.
Move the piston (11) away from the end stop (32) as far as possible to allow sufcient time to
adjust the end stop (32).
6. When the end stop (32) is free, remove it from the end cap (8) two to four turns.
CAUTION
!
Pressurized uid might leak through near the end stop (32) threads.
Move the piston (11) away from the end stop (32) as far as possible to allow sufcient time to
adjust the end stop (32).
7. Release pressure slowly through end cap (8) ports to fully retract the drive rod (1)
until the operator stops.
8. Screw the end stop (32) into the end cap (8) until it stops by contacting the drive
rod (1).
9. Reapply pressure through the end cap (8) ports to move the piston (11) away from
the end stop (enough to allow one full turn of the end stop).
10. Repeat steps 7 to 10 of Condition A on previous page to complete the adjustment.
32
NOTE:
The fully retracted end of the operator travel has now been set.
Operator End Stop Adjustment
Page 37
Installation, Operation and Maintenance Manual
E-90090007 Rev. 0
Section 9: Testing and Troubleshooting
Section 9: Testing and Troubleshooting
9.1 Testing
System operation and performance should be tested and noted regularly to detect
the problem in early stage. Use the following section to trace the source of problems
before proceeding to a major operator overhaul (the operator itself is generally the least
likely component to malfunction and requires the most time and effort to service).
9.2 Troubleshooting
NOTE:
This section focuses mainly on the most common problems and possible solutions of an
operator. The control and control component troubleshooting is not part of the scope.
In general, unsatisfactory operation of the operator is usually due to insufcient supply
caused by leakage. Please contact the manufacturer for more detailed information
regarding your requirements.
April 2022
1. NO MOVEMENT, SLOW, JERKY OR PARTIAL STROKE
— Check for sufcient supply pressure and ow.
— Check to ensure that speed control valve and shutoff valve are not
fully closed.
— Check for change in operating conditions, that is, higher line pressure,
different uid, valve packing tightened excessively.
— Check if manual override (if applicable) has not been left in locked position
and is interfering. Ensure that it is fully disengaged to allow movement of
the operator.
NOTE:
If the problem persists, please continue to the next section.
Testing and Troubleshooting
33
Page 38
Section 9: Testing and Troubleshooting
April 2022
2. CHECK FOR EXTERNAL LEAKAGE
NOTE:
The assumption below is control components and all joining ttings have been veried
and conrmed that the symptoms (leakage) are not caused by control components and all
joining ttings.
The purpose of the suggestions below is to identify if there is any external leakage from the
operator and the location of leakage.
• With pressure applied to the operator, check cylinder ends, end stop, drive rod
and/or manual override (if applicable) for leakage.
— Check the torque value on stay rod nuts if leakage is detected around the
cylinder ends. Tighten if necessary. Replace the seals at the cylinder ends
if leakage continues.
Installation, Operation and Maintenance Manual
E-90090007 Rev. 0
NOTE:
Please refer to Table 6 to identify the recommended torque.
— Tighten the end stop cover if leakage is around end stop or manual
override (if applicable). Replace the seal if leakage continues.
— Stroke the operator for a couple times if leakage is around drive rod.
Replace the seal if leakage continues (the seal is likely damaged).
NOTE:
If there is no external leakage and the problem persists, refer to the next section to check
for internal leakage.
34
Testing and Troubleshooting
Page 39
Installation, Operation and Maintenance Manual
E-90090007 Rev. 0
3. CHECK FOR INTERNAL LEAKAGE
• With pressure applied to the power stroke side of the operator (end cap side for
style FS operator and cylinder plate side for style SR operator), check for leakage
(blow-by) from breather/vent port of the opposite (spring) side.
— Check the piston seals if leakage is found on an operator that has not been
used for a long time. Stroke the operator a few times might help the seal
to regain its resiliency and eliminate the problem.
— If leakage persists, then the seals need to be replaced accordingly.
NOTE:
If the problem persists, please continue to the next step below.
4. VALVE LEAKAGE OR UNABLE TO CLOSE COMPLETELY
— If leakage is through the line valve itself (the valve cannot be closed
completely), check the maximum operator travel (MOT) and maximum
valve travel (MVT). Refer to Section 5.2 and Section 8 if the operator stop
adjustment is required, particularly if the operator was recently installed
or serviced.
Section 9: Testing and Troubleshooting
April 2022
Testing and Troubleshooting
35
Page 40
Section 10: Document Revision
April 2022
Installation, Operation and Maintenance Manual
Section 10: Document Revision
Table 7. Revision Overview
Rev Date ECN Status By*
Released Compiled N/A
A June 2014
0 April 2022 Migration to New Template Approved J. Carroll
Reviewed Checked N/A
Approved Approved N/A
E-90090007 Rev. 0
36
Document Revision
Page 41
Installation, Operation and Maintenance Manual
E-90090007 Rev. 0
List of Tables
Table 1 Denition of Terms ........................................................................................ 2
Table 2 Parts List........................................................................................................3
Table 3 Parts List......................................................................................................20
Table 4 Specication of Piston Hex Nut Tightening Torque ...................................... 24
Table 5 Specication of Jackscrew in Jacknut Tightening Torque...............................25
Table 6 Specication of Stay Rod Nut Tightening Torque..........................................26
Table 7 Revision Overview........................................................................................36
Table A-1 Parts List ......................................................................................................40
Table A-2 Parts List ......................................................................................................42
List of Tables
April 2022
List of Tables
37
Page 42
List of Figures
April 2022
List of Figures
Figure 1 Typical Assembly of GVO-HP-SR .................................................................... 3
Figure 2 Linear Valve Operator Model Designation ......................................................4
Figure 3 Linear Valve Operator Serial Number ............................................................. 4
Figure 4 Measurement of Travel Adjustment for Valve and Operator ............................ 9
Figure 5 Lifting Method..............................................................................................13
Figure 6 Markings for Maintenance.............................................................................20
Figure A-1 Typical Assembly GVO-HP-SR .......................................................................39
Figure A-2 Typical Assembly GVO-HP-FS ....................................................................... 41
Installation, Operation and Maintenance Manual
E-90090007 Rev. 0
38
List of Figures
Page 43
Installation, Operation and Maintenance Manual
E-90090007 Rev. 0
Appendix A: List of Drawings
A.1 Typical Assembly GVO-HP-SR
Figure A-1 Typical Assembly GVO-HP-SR
Appendix
April 2022
Appendix
39
Page 44
Appendix
April 2022
Installation, Operation and Maintenance Manual
E-90090007 Rev. 0
Table A-1. Parts List
Item Description Qty Note
1 Drive Rod 1 -
8 End Cap 1 11 Piston 1 17 Cylinder 1 22 Stay Rod 8 (V)
32 End Stop 1 33 End Stop Cover 1 35 Lifting Lug 2 (V)
40 Rod Guide 1 (Y)
42 Piston Wear Ring 1 (Y)
44 Wiper Ring 1 (Y)
52 O-Ring 1 (Y)
55 O-Ring 1 (Y)
57 O-Ring 2 (Y)
70 Polypak 1 (Y)
72 Polypak 1 (Y)
80 Connector Assembly 1 85 Trigger Ring 1 90 Heavy Hex Nut 1 91 Heavy Hex Nut 8 97 Hex Socket Setscrew 1 98 Hex Socket Setscrew 2 99 Hex Socket Setscrew 2 -
140 Pedestal Assembly 1 181 Compression Spring 1 184 Spring Retainer 1 191 Spring Retaining Rod 1 192 Hex Nut 1 204 Spring Barrel Assembly 1 -
NOTES:
(V) Qty Varies
(Y) Recommended spare parts/repair kit
40
Appendix
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Installation, Operation and Maintenance Manual
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A.2 Typical Assembly GVO-HP-FS
Figure A-1 Typical Assembly GVO-HP-FS
Appendix
April 2022
Appendix
41
Page 46
Appendix
April 2022
Installation, Operation and Maintenance Manual
E-90090007 Rev. 0
Table A-2. Parts List
Item Description Qty Note
1 Drive Rod 1 -
8 End Cap 1 11 Piston 1 17 Cylinder 1 22 Stay Rod 8 (V)
32 End Stop 1 33 End Stop Cover 1 35 Lifting Lug 2 (V)
40 Rod Guide 1 (Y)
42 Piston Wear Ring 1 (Y)
44 Wiper Ring 1 (Y)
52 O-Ring 1 (Y)
55 O-Ring 1 (Y)
57 O-Ring 2 (Y)
70 Polypak 1 (Y)
72 Polypak 1 (Y)
80 Connector Assembly 1 85 Trigger Ring 1 91 Heavy Hex Nut 9 97 Hex Socket Setscrew 1 98 Hex Socket Setscrew 2 99 Hex Socket Setscrew 2 -
140 Pedestal Assembly 1 181 Compression Spring 1 192 Hex Nut 1 204 Spring Barrel Assembly 1 -
NOTES:
(V) Qty Varies
(Y) Recommended spare parts/repair kit
42
Appendix
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Notes
April 2022
Page 48
World Area Conguration Centers (WACC) offer sales support, ser vice,
inventory and commissioning to our global customers.
Choose the WACC or sales ofce nearest you:
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T +1 281 477 4100
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T +65 6777 8211
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T +27 11 451 3700
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Tianjin 301700
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T +86 22 8212 3300
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T +36 22 53 09 50
Strada Biffi 165
29017 Fiorenzuola d’Arda (PC)
Italy
T +39 0523 944 411
For complete list of sales and manufacturing sites, please visit
www.emerson.com/actuationtechnologieslocations or contact us at
info.actuationtechnologies@emerson.com
www.emerson.com/bettis
VCIOM-17073-EN ©2022 Emerson. All rights reserved.
The Emerson logo is a trademark and service mark of Emerson Electric Co.
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