Baker Hughes Masoneilan 51 Series User manual

Masoneilan™
51/52/53 Series
Cylinder Actuator
Instruction Manual (Rev. D)
Baker Hughes Data Classification : Public

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THESE INSTRUCTIONS PROVIDE THE CUSTOMER/OPERATOR WITH IMPORTANT PROJECT-
SPECIFIC REFERENCE INFORMATION IN ADDITION TO THE CUSTOMER/OPERATOR’S
NORMAL OPERATION AND MAINTENANCE PROCEDURES. SINCE OPERATION AND
MAINTENANCE PHILOSOPHIES VARY, BAKER HUGHES COMPANY (AND ITS SUBSIDIARIES
AND AFFILIATES) DOES NOT ATTEMPT TO DICTATE SPECIFIC PROCEDURES, BUT TO
PROVIDE BASIC LIMITATIONS AND REQUIREMENTS CREATED BY THE TYPE OF EQUIPMENT
PROVIDED.
THESE INSTRUCTIONS ASSUME THAT OPERATORS ALREADY HAVE A GENERAL
UNDERSTANDING OF THE REQUIREMENTS FOR SAFE OPERATION OF MECHANICAL AND
ELECTRICAL EQUIPMENT IN POTENTIALLY HAZARDOUS ENVIRONMENTS. THEREFORE,
THESE INSTRUCTIONS SHOULD BE INTERPRETED AND APPLIED IN CONJUNCTION WITH
THE SAFETY RULES AND REGULATIONS APPLICABLE AT THE SITE AND THE PARTICULAR
REQUIREMENTS FOR OPERATION OF OTHER EQUIPMENT AT THE SITE.
THESE INSTRUCTIONS DO NOT PURPORT TO COVER ALL DETAILS OR VARIATIONS IN
EQUIPMENT NOR TO PROVIDE FOR EVERY POSSIBLE CONTINGENCY TO BE MET IN
CONNECTION WITH INSTALLATION, OPERATION OR MAINTENANCE. SHOULD FURTHER
INFORMATION BE DESIRED OR SHOULD PARTICULAR PROBLEMS ARISE WHICH ARE NOT
COVERED SUFFICIENTLY FOR THE CUSTOMER/OPERATOR’S PURPOSES THE MATTER
SHOULD BE REFERRED TO BAKER HUGHES.
THE RIGHTS, OBLIGATIONS AND LIABILITIES OF BAKER HUGHES AND THE CUSTOMER/
OPERATOR ARE STRICTLY LIMITED TO THOSE EXPRESSLY PROVIDED IN THE CONTRACT
RELATING TO THE SUPPLY OF THE EQUIPMENT. NO ADDITIONAL REPRESENTATIONS OR
WARRANTIES BY BAKER HUGHES REGARDING THE EQUIPMENT OR ITS USE ARE GIVEN
OR IMPLIED BY THE ISSUE OF THESE INSTRUCTIONS.
THESE INSTRUCTIONS ARE FURNISHED TO THE CUSTOMER/OPERATOR SOLELY TO
ASSIST IN THE INSTALLATION, TESTING, OPERATION, AND/OR MAINTENANCE OF THE
EQUIPMENT DESCRIBED. THIS DOCUMENT SHALL NOT BE REPRODUCED IN WHOLE OR IN
PART WITHOUT THE WRITTEN APPROVAL OF BAKER HUGHES.

Masoneilan 51/52/53 Series Cylinder Actuator | 3
Copyright 2021 Baker Hughes Company. All rights reserved.
Table Of Contents
Safety Information........................................................................................................................................4
Safety Symbols.........................................................................................................................................4
51/52/53 Series Cylinder Actuator Product Safety ...................................................................................5
Pressure Equipment Directive - (DIRECTIVE 2014/68/EU)................................................................7
Introduction ..................................................................................................................................................8
General.....................................................................................................................................................8
Actuator Description ................................................................................................................................8
Installation ....................................................................................................................................................8
Unpacking.................................................................................................................................................8
Pneumatic Supply Connections................................................................................................................8
Mounting...................................................................................................................................................9
Operation.....................................................................................................................................................11
Actuator ..................................................................................................................................................11
Handwheel Manual Override (Optional) ................................................................................................11
Switching from Auto Operation to Manual Operation Mode .............................................................14
Switching from Manual Operation to Auto Operation Mode..............................................................15
Hydraulic Manual Override (Optional) ....................................................................................................16
Filling the Reservoir for Single Acting and Double Acting Units........................................................17
Maintenance................................................................................................................................................18
Actuator Removal ...................................................................................................................................18
Double Acting (Model 51) With/Without Handwheel, With/Without Volume Chamber ......................19
Air to Extend (Model 52) With/Without Handwheel...........................................................................21
Air to Retract (Model 53) With/Without Handwheel ..........................................................................23
Maintenance Procedures........................................................................................................................26
Model 51 O-ring, Guide Ring Replacement - Double Acting With/Without Handwheel ...................26
Model 52 O-ring, Guide Ring Replacement - Air-to-Extend with Handwheel ...................................28
Model 52 O-ring, Guide Ring and Rod Scraper Replacement - Air-to-Extend Without Handwheel.....30
Model 53 O-ring and Guide Ring Replacement - Air to Retract with Handwheel..............................33
Model 53 O-ring, Guide Ring and Rod Scraper Replacement - Air-to-Retract Without Handwheel ....35
Spring Cartridge Removal ......................................................................................................................37

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Safety Information
Important - Please read before installation
These instructions contain WARNING, and CAUTION labels,
where necessary, to alert you to safety related or other important
information. Read the instructions carefully before installing and
maintaining your equipment.
WARNING hazards are related to personal injury.
CAUTION hazards involve equipment or property damage.
Operation of damaged equipment can, under certain
operational conditions, result in degraded process
system performance that can lead to injury or death. Total
compliance with all WARNING, and CAUTION notices is
required for safe operation.
Indicates a potentially hazardous situation which, if not avoided,
could result in serious injury.
Moving parts can crush or cut. Keep hands clear.
Indicates a potentially hazardous situation, which if not avoided
could result in property or data damage.
Indicates important facts and conditions
About this Manual
• The information in this manual is subject to change without prior
notice.
• The information contained in this manual, in whole or part, shall
not be transcribed or copied without Baker Hughes’s written
permission.
• Please report any errors or questions about the information in this
manual to your local supplier.
• These instructions are written specically for the 51/52/53 Series
Actuator, and do not apply for other actuator outside of this
product line.
Useful Life
The current estimated useful life period for the 51/52/53 Series
Actuator is 25+ years. To maximize the useful life of the product,
it is essential to conduct annual inspections, routine maintenance
and ensure proper installation to avoid any unintended stresses
on the product. The specific operating conditions will also impact
the useful life of the product. Consult the factory for guidance on
specific applications if required prior to installation.
Warranty
Items sold by Baker Hughes are warranted to be free from defects
in materials and workmanship for a period of one year from the
date of shipment provided said items are used according to
Baker Hughes recommended usages. Baker Hughes reserves
the right to discontinue manufacture of any product or change
product materials, design or specifications without notice.
Note: Prior to installation
• The actuator must be installed, put into service and maintained
by qualified and competent professionals who have undergone
suitable training.
• All surrounding pipelines must be thoroughly flushed to ensure
all entrained debris has been removed from the system.
• Under certain operating conditions, the use of damaged
equipment could cause a degradation of the performance of
the system which may lead to personal injury or death.
• Changes to specifications, structure, and components used
may not lead to the revision of this manual, unless such
changes affect the function and performance of the product.

Masoneilan 51/52/53 Series Cylinder Actuator | 5
Copyright 2021 Baker Hughes Company. All rights reserved.
Before using these products with fluids/compressed gases other than air or for non-industrial
applications, consult the factory.
Under certain operating conditions, the use of a damaged product could cause a degradation of
the performance of the system, which can lead to personal injury or death.
Installation in poorly ventilated, confined areas, with any potential of gases other than oxygen
being present, can lead to a risk of personnel asphyxiation.
51/52/53 Series Cylinder Actuator Product Safety
General installation, maintenance or replacement
• Products must be installed in compliance with all local and national codes and standards by qualified
personnel using safe site work practices. Personal Protective Equipment (PPE) must be used per safe site
work practices.
• Ensure proper use of fall protection when working at heights, per safe site work practices. Use appropriate
safety equipment and practices to prevent the dropping of tools or equipment during installation.
• Service by site personnel (installation, commissioning, and maintenance) who have been trained in proper site
procedures for working with and around Baker Hughes supplied equipment, per safe site work practices.
• Verify that the air supply pressure cannot exceed the marking on the information plate.
Installations in potentially explosive atmosphere, including ATEX Directive 2014/34/EU.
• Install, put into service, use and maintain in compliance with national and local regulations and in
accordance with the recommendations contained in the relevant standards concerning potentially
explosive atmospheres.
• Use only in situations that comply with the certification conditions shown in this document and after
verification of their compatibility with the zone of intended use.
• Install, put into service and maintain by qualified and competent professionals who have undergone
suitable training for devices used in areas with potentially explosive atmospheres and have relevant
certifications, as applicable.
II 2 GD TX

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Explosion Hazard - Substitution of components may impair suitability for use in a Hazardous
Location.
Electrostatic Discharge: Use only a damp cloth when cleaning to avoid electrostatic discharge,
do not use solvent.
All elements are metal and in contact, thus the same potential. Ensure all electrical apparatus
has a proper ground connection. Ensure the complete assembly has a proper ground
connection.
Hot Surface - Process Operating Conditions - Actuator Information Plate Marking TX
• Only place in locations that are correctly identified. Refer to the device label for the description of the
environment in which the device may be installed. Verify that the markings on the label are consistent with
the application.
• Repair only by service personnel qualified to make repairs on the actuator. Use only genuine replacement
parts which are provided by the manufacturer, including not only the major assemblies but also mounting
screws and O- rings, to guarantee that the products comply with the essential safety requirements of the
European Directives.
• If gasses other than air are used for supply, it is the end user’s responsibility to recognize and safely contain
any leaks or vents to atmosphere.
• If the pneumatic system is powered by a combustible gas it is the end user's responsibility to consider if the
installation should be treated as a hazardous classified area.
Risk of Ignition
Actuator surface temperature can be dependent on the process operating conditions.
Masoneilan 51 / 52 / 53 Actuators can withstand ambient temperatures at least equal to the MAXIMUM
OPERATING TEMPERATURE (as shown on Actuator Information Plate).
Surface temperature of the installed actuator will not be greater than the maximum process temperature of
the connected valve body or other process equipment.
• The user shall take necessary actions to ensure the maximum actuator surface temperature does not
exceed the Temperature Class of the Application.

Masoneilan 51/52/53 Series Cylinder Actuator | 7
Copyright 2021 Baker Hughes Company. All rights reserved.
Dresser Valve India PVT Limited
Coimbatore, Tamilnadu, India
Minimum Operating Temperature: -20°C1
Maximum Operating Temperature: 85°C1
Pressure Equipment Directive - (DIRECTIVE 2014/68/EU)
0062
Actuator Pressure
Size Bar PSI
12 10.3 150
16 10.3 150
20 10.3 150
24 5.17 75
18 5.17 75
32 4.83 70
Refer to the Actuator Information Plate for the serial number and date of manufacture.
1. The pressure and temperature limits noted are required to maintain a PED approved actuator installation.
Table 1 - Maximum Pressure1

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Introduction
The following instructions are designed to assist maintenance personnel in performing most of the
maintenance required on the Model 51/52/53 cylinder actuator. Baker Hughes has highly skilled service
engineers available for start-up, maintenance and repair of our actuators and component parts. In addition,
a regularly scheduled training program is conducted at the Training Center to train customer service and
instrumentation personnel in the operation, maintenance and application of our control valves, actuators
and instruments. Arrangements for these services can be made through your Baker Hughes representative
or sales office. When performing maintenance, use only Masoneilan replacement parts. Parts are available
through your local Baker Hughes representative or sales office. When ordering parts, always include Model
and Serial Number of the unit being repaired.
Installation
Unpacking
Care must be exercised when unpacking the equipment to prevent damage to the accessories and component
parts. If any problems or difficulties arise, contact your Baker Hughes representative or sales office.
Pneumatic Supply Connections
blThe Model 51/52/53 actuator is designed to accept 3/4” NPT air supply connections. Accessories
supplied with the actuator are mounted and connected at the factory.
General
These installation and maintenance instructions apply to the Masoneilan Model 51/52/53 cylinder actuator
regardless of the valve body on which it is used. Actuator part numbers and recommended spare parts
required for maintenance are listed in Table 5 on page 13. The model number and action of the actuator is
shown as part of the model number listed on the identification tag located on the actuator.
Actuator Description
The Model 51/52/53 is a pneumatic cylinder actuator available in double acting spring-less and spring-
return configurations. The double acting version can be configured with a volume chamber directly attached
to the cylinder to provide a failsafe operation in the event of supply pressure loss. The spring-return version
includes a spring cartridge subassembly. The spring is pre-compressed within the cartridge subassembly
prior to assembly into the cylinder. This subassembly also provides guiding support and is isolated from the
pressurized pneumatic section. This design provides reliability and maintainability.
Actuator Type
51 Double Acting (No springs)
52 Air to extend (Extend stem)
53 Air to retract (Retract stem)
Table 2 - Numbering Schema

Masoneilan 51/52/53 Series Cylinder Actuator | 9
Copyright 2021 Baker Hughes Company. All rights reserved.
Do not exceed supply pressure indicated on identification plate.
RETURING TO SERVICE: After installation or maintenance, ensure the equipment has been
properly inspected and returned to proper condition before returning to service.
Placement of the valve actuator assembly should consider ease of access in the event of
assembly or disassembly.
For mounting horizontally, consult with the factory for technical advice.
Mounting
The following installation and plug stem adjustment procedures are for mounting of the 51/52/53 Actuators
on metal seated reciprocating valves. Refer to the specific valve instructions for other trim types, such as
pilot operated valves and soft seat designs.
1. Install the actuator on to the valve body and tighten the mounting hardware to the proper torque.
2. Connect a controlled pressure source to the:
• Yoke (bottom side) for model 51 double acting and 53 air to retract.
• Top Plate (top side) for model 52 air to extend.
3. Retract the actuator stem either pneumatically or manually using a hand wheel until contact has been
made with the Top Plate and Piston (full open position).
4. Extend the actuator stem until it reaches the valve rated stroke either pneumatically or with a hand wheel,
and maintain the position.
5. Position the Split Clamp with the Split Clamp to Bonnet (SB) gap as shown in Table 3. If the Split
Clamp does not properly engage with both stems, slightly extend the actuator stem until alignment and
engagement is achieved (Figure 1).
During assembly or maintenance, and under operation in some conditions, the operators
or technicians must be alert and aware of all possible pinch points or areas where there are
moving or sliding components.

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6. Install the mating side of Split Clamp and tighten the clamping screws carefully and evenly
in a crisscross pattern to the torque recommended in Table 4.
7. Assemble and tighten the indicator arm, spring lock washers and hexagon bolts.
8. Temporarily tighten the cross recessed head screw and fix the Indicator Plate.
9. Mark the Indicator Arrow on to the Indicator Arm with a punch.
10. Adjust the Indicator Plate to the correct position, as shown in Figure 2.
11. Verify that the valve rated stroke is achieved; then remove the controlled pressure source.
Size SB Gap
12 125 mm (4.92")
16 109 mm (4.29")
20, 24, 28, 32 115 mm (4.53")
Table 3 - Split Clamp Positioning
Figure 1 - Sighting the Split Clamp
Size Dry Lubricated
M12 88 N-m (65 ft-lbs) 66 N-m (49 ft-lbs)
M16 218 N-m (160 ft-lbs) 164 N-m (120 ft-lbs)
Table 4 - Split Clamp Torque
Figure 2 Indicator Arrow
Indicator
Arrow

Masoneilan 51/52/53 Series Cylinder Actuator | 11
Copyright 2021 Baker Hughes Company. All rights reserved.
Operation
Actuator
Increasing air pressure into the Top Plate moves the Piston Plate subassembly (15) down, while increasing
pressure into the Yoke moves the Piston Plate subassembly up towards the Top Plate. The spring-return
versions provide mechanical fail-safe operation in the desired direction in case air supply pressure is lost.
Handwheel Manual Override (Optional)
There are two handwheel designs (CM and DM) available depending on actuator size. A handwheel
provides manual control of the valve position in case of air supply failure. Operation of the CM and DM
handwheels are the same.
Do not exceed supply pressure indicated on identification plate.
For pneumatic operation, the handwheel must be placed in the Auto Position. Travel is locked if
the handwheel is not in the Auto Position.

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Figure 3 - CM, DM Handwheel
CM, DM handwheel
Typical for Models 51/52/53

Masoneilan 51/52/53 Series Cylinder Actuator | 13
Copyright 2021 Baker Hughes Company. All rights reserved.
Ref. # Description Ref. # Description Ref. # Description
1 Yoke 24 Hexagon bolt 47 Locking pin case
2Piston rod S/A 25 Spring lock washer 48 Pin
3Lower spring button 26 Spring lock washer 49 Spring
4 Spring 27 Cross recessed head screw 50 Hexagon socket set screw
5Hexagon socket head cap screw 28 Exhaust pipe 51 Guide key
6Spring lock washer 29 Spring lock washer 52 Worm gear
7Spring tube 30 Plug 53 Spacer tube
8Guide bushing ●31 Piston S/A 54 Adapter
9Compression bolt ●32 Guide bushing 55 Set screw
10 Upper spring button ●33 O-ring (Piston rod) 56 Worm
11 Thrust bearing ●34 Rod scraper ●57 Bearing
12 Compression nut 35 Hexagon bolt 58 Retaining ring
13 Separator plate/ Model 52/53 36 Spring lock washer 59 Hand wheel shaft
14 Cylinder tube 37 Gear box 60 Key (Worm)
15 Piston plate S/A 38 Gear box cover S/A 61 Gear box cover S/A
●16 Guide ring ●39 O-ring 62 Retaining ring
17 Top plate ●40 Thrust bearing 63 Handwheel
18 Set screw 41 Adjustment screw 64 Grip
19 Center bolt 42 Locking nut 65 Directional plate
20 Hexagon nut 43 Adjustment nut 66 Self locking nut
●21 O-ring (Piston, Top plate) 44 Piston rod engagement 67 Operating information plate
22 Split clamp ●45 Bearing 68 Drive screw
23 Indicator arm 46 Retaining pin 69 Separator plate (Model 51)
70 Volume chamber tube
● Recommended Spare Parts
Table 5 - Parts References of 51/52/53 Actuators

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Switching from Auto Operation to Manual Operation Mode
1. Remove the pneumatic pressure to de-energize actuator.
2. Align the helical groove on the Piston Rod (2) with a groove in the Adapter (54) by rotating the Handwheel (63).
3. Rotate the Gear Box Cover (38) in the clockwise direction while holding down the AUTO button until the MANU
button releases. If the MANU button does not release, slightly rotate the handwheel until the MANU button releases.
During assembly or maintenance, and under operation in some conditions, the operators
or technicians must be alert and aware of all possible pinch points or areas where there are
moving or sliding components.
Ensure that the MANU button is fully released and the Gearbox Cover (38) is firmly locked at the
manual position (no rotation). Sudden valve movement can occur in manual mode if the Piston
Rod (2) power screw is disengaged.
Figure 5 - Auto/Manu Buttons and Piston Screw
AUTO button
MANU button
Figure 4 - Adapter and Piston Rod
Adapter
Piston Rod
Helical Groove

Masoneilan 51/52/53 Series Cylinder Actuator | 15
Copyright 2021 Baker Hughes Company. All rights reserved.
Switching from Manual Operation to Auto Operation Mode
1. Remove the pneumatic pressure to de-energize actuator.
2. Set the positioner input signal to the current valve position. Using the handwheel move actuator to the
de-energized position.
3. Rotate the Gear Box Cover (38) in the counter clockwise direction while holding down the MANU button until the
AUTO button releases.
Sudden valve movement may occur if this operation is not performed.
Ensure that the AUTO button is fully released and the Gearbox Cover (38) is firmly locked at the
auto position (no rotation).Failure of the automatic operation can occur.

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Hydraulic Manual Override (Optional)
The hydraulic handjack is a secondary control system to provide the means to operate the valve when
the primary pneumatic system fails. The system in one configuration is a single acting cylinder which acts
against spring load. In the second configuration, the cylinder is connected in a double acting mode. The
system requires no adjustments, and only minimal servicing (filling the reservoir) is required.
Operation of the Manual Hydraulic Override: Air-to-Extend and Air-to-Retract Actuators
With the bypass valve closed, operating the handjack extends or retracts the stem (depending on operating
mode) to its full travel position. Opening the bypass valve allows the stem to return to its normal or fail-safe
position. The bypass valve must be open during pneumatic operation.
Figure 6 - Valve Installation - Vertical and Horizontal
Handjack assembly is shipped with the reservoir properly filled and with a pipe plug in the
reservoir breather port. Remove pipe plug and replace with breather plug prior to operation.
Orient valve with breather plug to top of reservoir (Figure 6 ).
Breather
Port
Breather
Port

Masoneilan 51/52/53 Series Cylinder Actuator | 17
Copyright 2021 Baker Hughes Company. All rights reserved.
Filling the Reservoir for Single Acting and Double Acting Units
1. Remove the pipe plug from the hydraulic fluid fill hole on the pump.
2. With the actuator in its normal position (stem extended for double acting), fill the pump reservoir
approximately 1/2 full with Mobil DTE 24 hydraulic fluid (or equivalent).
3. Close the pump bypass and hand operate the actuator to its full travel position, adding fluid as necessary to
maintain the 1/2 full level in the reservoir. This operation assures that the hydraulic cylinder is filled with fluid.
4. Install breather plug into the hydraulic fluid fill hole after the hydraulic fluid filling procedure.
Do not over fill the reservoir.

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Maintenance
Actuator Removal
Before removal of the valve and disassembly:
• Isolate the unit with the air supply lines to the cylinder removed and the system pressure to the valve cutoff.
• Empty the pneumatic volume tanks so that no trapped air remains in the cylinder.
• Disconnect all the electrical connections to the actuator.
Maintenance of the actuator normally requires removal of the actuator from the valve body. The steps in removal
of the actuator are different depending on whether the actuator is double acting, air to extend or air to retract.
POTENTIAL LOSS OF CONTAINMENT / PRESSURE: The failure of properly following installation,
maintenance and/or assembly /disassembly instructions may result in unsafe conditions. It is the
responsibility of the end user to ensure instructions are properly followed.
LINES and FITTINGS: All lines and fittings must be properly connected and secured, and as
required anchored to restrict movement.
The cylinder actuator is a spring loaded device and the disassembly instructions must be adhered
to as unit or bodily damage can occur.
Moving parts can crush or cut. Keep hands clear.
During assembly or maintenance, and under operation in some conditions the operators or
technicians must be alert and aware of all possible pinch points or areas where there are moving
or sliding components.
RETURING TO SERVICE: After installation or maintenance, ensure the equipment has been
properly inspected and returned to proper condition before returning to service.
LOCKOUT / TAGOUT: Proper Lockout / Tagout of energy sources prior to service or maintenance,
per safe site work practices, must be followed to ensured safety for personnel conducting work
on the actuator assembly. This includes any potential control signals or circuits that may have a
remote or automated control function over an actuator or component.
Actuator action may be checked by referring to the valve identification tag. Model 51 indicates
unit is double acting (No spring) and Model 52 indicates unit is air to extend and Model 53
indicates unit is air to retract.
Instructions are general in nature. Check valve instructions for additional guidance. Actuator
model can be determined by referring to the valve identification tag.

Masoneilan 51/52/53 Series Cylinder Actuator | 19
Copyright 2021 Baker Hughes Company. All rights reserved.
Double Acting (Model 51) With/Without Handwheel, With/Without Volume Chamber
1. The handwheel must be at the AUTO position, and air supply to actuator must be shutoff (see “Switching
from Manual Operation to Auto Operation Mode” on page 15).
2. Disconnect air piping from the Top Plate (17) and Yoke (1), and ensure that there is no air pressure in the
Cylinder (Figure 7 and Figure 8).
Figure 7 - Model 51 with Handwheel, With/Without Volume Chamber
Model 51 Double Acting
With handwheel without volume chamber
Model 51 Double Acting
With handwheel with volume chamber

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Figure 8 - Model 51 Without Handwheel, With/Without Volume Chamber