Emerson Bettis GVO-HP-SR Linear User manual

Installation, Operation and Maintenance Manual
E-90090007 Rev. 0
April 2022
Bettis GVO-HP-SR/FS Linear
Gate Valve Operator

Notes
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Installation, Operation and Maintenance Manual
E-90090007 Rev. 0
Table of Contents
April 2022
iTable of Contents
Table of Contents
Section 1: Safety Warning
Safety Warning........................................................................................................1
Section 2: Introduction
2.1 General Service Information.......................................................................... 2
2.2 Denition of Terms........................................................................................ 2
2.3 Scope............................................................................................................ 3
2.4 Model Identication...................................................................................... 3
Section 3: Storage Instructions
Storage Instructions.................................................................................................5
Section 4: Operation
4.1 SR Operator .................................................................................................. 6
4.2 FS Operator................................................................................................... 6
Section 5: Preparation
5.1 Tools ............................................................................................................. 7
5.2 Pre-Installation Verication ........................................................................... 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

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Table of Contents
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Table of Contents
Section 8: Operator End Stop Adjustment
8.1 SR - End Stop Adjustment Conditions .......................................................... 29
8.2 FS - End Stop Adjustment Conditions........................................................... 30
Section 9: Testing and Troubleshooting
9.1 Testing........................................................................................................ 33
9.2 Troubleshooting.......................................................................................... 33
Section 10: Document Revision
Document Revision................................................................................................36
List of Tables
List of Tables...........................................................................................................37
List of Figures
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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Section 1: Safety Warning
Safety Warning
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 specic and signicant 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.
! 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.

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Section 2: Introduction
Introduction
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 Denition of Terms
The abbreviations included in this IOM manual are listed in Table 1.
Table 1. Denition of Terms
! 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.
Term Denition
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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Section 2: Introduction
Introduction
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 Identication
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
Table 2. Parts List
Item Description Qty
1 Drive Rod 1
8End 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
Introduction
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
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 identied with an individual serial number. Figure 3 shows the form
of the Bettis serial number.
Figure 3 Linear Valve Operator Serial Number
For example, a serial number of 00-123456-2.1 represents the rst unit on the second line
of sales order 123456.
## X ## X ### - GVO - HP - YY - ZZ
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
*Consult the factory for additional sizes or options
Actuator Type*
HP - High Pressure Hydraulic
Actuator Function
SR - Spring-Return
FS - Fail-Safe
Options and Overrides*
MJ - Manual Jackscrew
(only extends drive rod)
## - ###### - # . #
BettisTM Internal Code
Bettis Sales Order #
(not purchase order #)
Sales Order Line #
Unit #

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Storage Instructions
Section 3: Storage Instructions
Storage Instructions
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.

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Section 4: Operation
Operation
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
(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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Section 5: Preparation
Preparation
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 specic 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 specic pressure range in the supplied schematics
• Hydraulic power unit
• Block and bleed test valve assembly
• Anti-seize (lubricant) compound
• Pipe thread sealant (e.g.; Teon tape, pipe dope)
• Commercial solvent (e.g.; Varsol)

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Section 5: Preparation
Preparation
5.2 Pre-Installation Verication
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.
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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Section 5: Preparation
Preparation
Figure 4 Measurement of Travel Adjustment for Valve and Operator
Mark #3
Mark #1
Mark #2
Mark #4

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Section 5: Preparation
Preparation
1. Drive the valve stem fully into the valve body, ensuring that it is fully retracted
(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= ___________
2. Actuate the operator to fully extend the drive rod (1). Mark on the swivel
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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Section 5: Preparation
Preparation
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) = ___________
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 verication 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.

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Section 6: Installation
Installation
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.
• 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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Section 6: Installation
Installation
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.
Figure 5 Lifting Method
Lifting
Angle

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Section 6: Installation
Installation
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.
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 sufcient 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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Section 6: Installation
Installation
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.
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 conrms 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 conrmed, the set screws (98) in the connector assembly
can be tightened to lock into position.

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Section 6: Installation
Installation
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
about 1 in. away.
3. Hold the operator in position and slowly extend the drive rod (1) until the stem nut
contacts the valve stem.
4. Lower the operator while simultaneously retracting the drive rod (1) as you thread
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 conrms 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 conrmed the setscrews (98) in the connector assembly
can be tightened to lock into position.