Baker Hughes Masoneilan 49000 Series User manual

Masoneilan™
49000 Series
Energy Management Control Valve
Instruction Manual (Rev.D)
Baker Hughes Data Classication: Public

b | Baker Hughes Copyright 2020 Baker Hughes Company. All rights reserved.
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 49000 Series Energy Management Control Valves | cCopyright 2020 Baker Hughes Company. All rights reserved.
Table of Contents
Safety Information.....................................................................................................................1
About this Manual ..................................................................................................................1
Warranty.................................................................................................................................1
Introduction................................................................................................................................2
Scope.....................................................................................................................................2
Serial Plate.............................................................................................................................2
After Sales Service.................................................................................................................2
Spare Parts ............................................................................................................................2
Actuator and Accessories.......................................................................................................2
Numbering System....................................................................................................................2
Unpacking ..................................................................................................................................2
Installation..................................................................................................................................3
Piping Cleanliness .................................................................................................................3
Isolation Bypass Valve ...........................................................................................................3
Heat Insulation .......................................................................................................................3
Hydrostatic Testing and Line Cleaning...................................................................................3
Flow Direction ........................................................................................................................3
Welded Connections ..............................................................................................................3
Pre-Weld Preparation .......................................................................................................3
Welding Process...............................................................................................................3
Post Weld Cleaning & Assembly ......................................................................................3
Actuator Assembly .................................................................................................................3
Disassembly...............................................................................................................................3
Valve Actuation.......................................................................................................................3
Disconnect Instrumentation ...................................................................................................3
Air-to-Retract Actuators..........................................................................................................4
Threaded Connection ......................................................................................................4
Split Clamp Connection ....................................................................................................4
Air-to-Extend Actuators ..........................................................................................................4

d | Baker Hughes Copyright 2020 Baker Hughes Company. All rights reserved.
Actuator Removal...................................................................................................................4
Valve Disassembly .................................................................................................................4
Plug Stem Disassembly .........................................................................................................4
Maintenance & Repair...............................................................................................................5
Maintenance...........................................................................................................................5
Packing Box......................................................................................................................5
PTFE Packing...................................................................................................................5
Valve with Graphite Packing ............................................................................................5
Repair of Parts...........................................................................................................................5
Guiding Surfaces....................................................................................................................5
Seating Surfaces....................................................................................................................5
Gaskets..................................................................................................................................6
Seal Rings..............................................................................................................................6
Metal Seal ..............................................................................................................................6
Valve Plug ..............................................................................................................................6
Valve Reassembly ....................................................................................................................6
Pinning the Valve Plug ...........................................................................................................6
Completing Valve Body Assembly..........................................................................................6
Seat Ring Installation .............................................................................................................6
Trim, Bonnet and Body Assembly ..........................................................................................7
Balance Seal Installation (B019)............................................................................................7
Flow to open installation (FTO).........................................................................................7
Flow to close installation (FTC) ........................................................................................7
Balance seal, metal (high temp) type FTO and FTC (seal is non-directional)..................7
Bonnet Assembly ......................................................................................................................7
Tightening Body Nuts.............................................................................................................7
Packing Box Assembly...........................................................................................................8
Actuation....................................................................................................................................11
Type 51/52/53 Cylinder Actuators ..........................................................................................14
Connecting Air to Extend........................................................................................................14
Connecting Air to Retract .......................................................................................................14

Masoneilan 49000 Series Energy Management Control Valves | 1Copyright 2020 Baker Hughes Company. All rights reserved.
Safety Information
Important - Please read before installation
These instructions contain DANGER, 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 control valve. DANGER and
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 DANGER,
WARNING, and CAUTION notices is required for safe operation.
CAUTION
CAUTION
WARNING
DANGER
This is the safety alert symbol. It alerts you to potential personal
injury hazards. Obey all safety messages that follow this symbol to
avoid possible injury or death.
CAUTION
CAUTION
WARNING
DANGER
Indicates a potentially hazardous situation which, if not avoided,
could result in death or serious injury.
CAUTION
CAUTION
WARNING
DANGER
Indicates a potentially hazardous situation which, if not avoided,
could result in serious injury.
CAUTION
CAUTION
WARNING
DANGER
Indicates a potentially hazardous situation which, if not avoided,
could result in minor or moderate injury.
CAUTION
CAUTION
WARNING
DANGER
When used without the safety alert symbol, indicates a potentially
hazardous situation which, if not avoided, could result in property
damage.
Note: 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 specifically for the 49000 Series
control valve, and do not apply for other valves outside of this
product line.
Useful Life Period
The current estimated useful life period for the 49000 Series control
valve 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 valve must be installed, put into service and maintained by
qualified and competent professionals who have undergone
suitable training.
• All surrounding pipe lines 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.

2 | Baker Hughes Copyright 2020 Baker Hughes Company. All rights reserved.
Introduction
Scope
The following instructions are designed to guide the user through
the installation and maintenance of the Masoneilan 49000 Series
control valves.
The Masoneilan 49000 Series product is part of Masoneilan’s
Severe Service Product portfolio, and is custom designed to fit
our customer’s most difficult applications. This document provides
detailed installation and maintenance instructions for the 49000
Series product line.
Serial Plate
The serial plate is usually fixed to the side of the actuator yoke.
It indicates information about the valve including size and type,
pressure class rating, body/bonnet material, and serial number.
After Sales Service
Baker Hughes offers Masoneilan After Sales Service comprised of
highly qualified technicians to support the installation, operation,
maintenance and repair of its equipment. For support contact the
local Baker Hughes Masoneilan representative or Baker Hughes
Masoneilan factory located closest to you.
Spare Parts
Only Masoneilan replacement parts should be used when
carrying out maintenance operations. Obtain replacement parts
through local Baker Hughes representatives or Masoneilan Parts
Department.
When ordering spare parts, the MODEL AND SERIAL NUMBERS
indicated on the manufacturer’s serial plate MUST BE GIVEN. The
serial plate is on the side of the actuator yoke.
Actuator and Accessories
Actuators and other valve accessories have their own instruction
manuals, that provide information and details on the assembly and
installation. Refer to the appropriate instruction manual for each
unique accessory.
Unpacking
Care must be exercised when unpacking the valve to prevent
damage to the accessories and component parts. Contact the
local Baker Hughes Sales Office or Service Center with any issues
or problems. Be sure to note the valve model number and serial
number in all correspondence.
Numbering System
2nd
9
5th
4th
3rd
51 Cylinder
Double-Acting
52 Cylinder
Spring-Return
Air to Close
53 Cylinder
Spring-Return
Air to Open
87 Spring-Diaphragm
Air to Close
88 Spring-Diaphragm
2nd 1st
4
1st 6th
Actuator Type
0 Custom
Characteristic
1 Linear
Trim
Configuration
0 Unbalance
2 Polymeric
Seal Ring
and Soft
Seat
4 Metal Seal
Ring and
Metal Seat
with Auxiliary
Plug
5 Metal Seal
Ring and
Metal Seat
6 Polymeric
Seal Ring
and Metal
Seat
9 Graphite
Seal Ring
Seal Type
F Forged
Body
A Angle Body
EB Extension
Bonnet
D Diffuser
Options
0 Undefined
1 Single Stage
Lo-dB*
2 Double Stage
Lo-dB
8 Partial Stage
9 V-LOG*
Trim Type
Body Series
49 Energy
Management
Control Valve

Masoneilan 49000 Series Energy Management Control Valves | 3Copyright 2020 Baker Hughes Company. All rights reserved.
Installation
Piping Cleanliness
Before installing the valve in the line, clean piping and valve of all
foreign material such as welding chips, scale, oil, grease or dirt.
Gasket mating surfaces must be thoroughly cleaned to ensure
leak-free joints. Sacrificial start-up fixtures can be purchased from
Baker Hughes to protect the operational trim during the installa-
tion and line flushing phases.
CAUTION
CAUTION
WARNING
DANGER
If major system or piping modications (or repairs) are
performed, thorough ushing and blowdown of the
system will be required prior to reinstalling the trim.
Sacricial ushing trim should be installed in the valve
to protect the integrity of the ow passages. Failure to
follow this warning will violate the valve warranty agree-
ment and could result in control instability, excessive
noise levels, and valve leakage.
Isolation Bypass Valve
To allow for in-line inspection, maintenance and removal of the
valve without service interruption, provide a manually operated
shutoff valve on each side of the control valve and a manually
operated throttling valve in the bypass line.
Heat Insulation
In case of a heat-insulated installation, do not insulate the valve
bonnet and take protective measures relative to personal safety.
Hydrostatic Testing and Line Cleaning
During this operation, the control valve must not be used as an
isolating valve. This means that the valve must always be opened
before carrying out pressure tests in the process line, cleaning
of pipes, etc. otherwise equipment damage or failure of the seal
rings could result. If the valve is to remain installed during line
cleaning, flushing trim MUST be installed to prevent damage to
trim components.
Flow Direction
The valve must be installed so that the process fluid will flow
through the valve in the direction indicated by the flow arrow
located on the body.
Welded Connections
CAUTION
CAUTION
WARNING
DANGER
Carefully review the information in this section prior to
welding any valves inline. Refer any additional ques-
tions to the local Baker Hughes Sales Ofce or Service
Center.
Pre-Weld Preparation
Carefully follow the installation steps defined in the sections noted
above prior to performing weld procedures.
Welding Process
Perform welding process in accordance with the standard
requirements for the materials and weld construction of the specific
valve. Apply post weld heat treatment if required.
CAUTION
CAUTION
WARNING
DANGER
Internal valve components should be removed prior
to performing welding or pre/post weld heat treatment
weld heat treatment in order to prevent damaging any
soft goods (such as PTFE seals). If unable to remove
the elastomeric components, then other methods must
be employed to prevent the local temperature around
the seals from exceeding the maximum material limits
(typically 450°F / 232°C for PTFE based materials).
Post Weld Cleaning & Assembly
Inspect the body, bonnet, and trim components for cleanliness and
surface condition. Remove any foreign materials, such as weld
chips, slag or scale. Make sure there are no nicks, scratches, burrs
or sharp corners on sealing and sliding surfaces. Clean all gasket
interface surfaces and reassemble using new gaskets to ensure
sealing integrity.
Actuator Assembly
Assemble the pneumatic actuator onto the control valve using the
appropriate instructions for the specific actuator model and type.
Connect air pressure lines to the actuator ports to meet intended
operating mode (i.e., air-to-extend, air-to-retract, or double-acting).
Disassembly
CAUTION
CAUTION
WARNING
DANGER
Prior to performing any maintenance on the valve, iso-
late the valve and vent the process pressure.
Valve Actuation
Access to the internal components of the valve should be
accomplished with the actuator removed. Follow the detailed
instructions below and refer to the appropriate actuator
instruction manuals.
CAUTION
CAUTION
WARNING
DANGER
Actuator may be pre-loaded with tension from air pres-
sure or springs. Prior to disconnecting instrumentation
read all instructions for the specic actuator.
Disconnect Instrumentation
Disconnect all mechanical connections between the positioner and
the other instruments. Disassemble the valve stem and actuator
stem coupling as described in the following sections.

4 | Baker Hughes Copyright 2020 Baker Hughes Company. All rights reserved.
Air-to-Retract Actuators
Apply sufficient air pressure to the actuator to retract the stem
completely. Disconnect the plug stem from the actuator stem
depending on the connection type as described below.
Threaded Connection
Unscrew the plug stem from the actuator stem, making sure the
plug never contacts the seating area (liner or seat ring) at any
time during disassembly.
CAUTION
CAUTION
WARNING
DANGER
Contact between the plug and seating area during this
disassembly process may cause damage to the seating
surfaces. It may be necessary to disassemble the actua-
tor yoke from the valve bonnet and lifting the actuator
off the valve to avoid plug to seating surface contact.
Split Clamp Connection
Remove the screws and disassemble the stem connector from the
valve and actuator stem.
Air-to-Extend Actuators
For this actuator configuration, the valve plug is already in the fully
retracted position without any air pressure applied. Disconnect
the plug stem and actuator stem as described in the threaded
connection and stem connector sections above depending on the
connection type.
Actuator Removal
Disconnect all electrical and air connections to and from the
actuator. Disassemble yoke nut or yoke attachment screws, and
lift the actuator off of the valve being careful not to damage the
bonnet threads
Valve Disassembly
The valve must always be reassembled with new packing set and
gaskets. Before disassembly, make sure the recommended spare
parts are available for reassembly.
1. Disconnect the piping to the leak detector connection on the
bonnet (if applicable).
2. Remove the packing flange nuts (19) then remove the packing
flange (17) and the packing follower (16).
3. Check the exposed part of the valve stem (8) to confirm it is
clean enough for ease of removal of the bonnet (2).
4. Remove the body nuts (13).
For valve configurations designed with a two piece bonnet
assembly (bonnet and bonnet flange):
5. Disassemble the bonnet flange (3) from the valve body (1).
6. Lift the bonnet (2) and metal seal (11) to remove from the
valve body (1). During this operation, the valve stem (8) must
be pushed downward to ensure the valve plug (6) remains
inside the valve body.
Note: The metal seal (11) will require some force to
remove from the bonnet (2). Using a common tool, such
as a small pry bar, lever the seal up at various points to
lift out evenly.
7. Remove the cage gasket (10A) from the top of the valve
cage (4). Proceed to step 10.
For valve configurations designed with a single piece bonnet:
8. Lift the bonnet (2) and remove from the valve body (1).
During this operation, the valve plug stem (8) must be pushed
downward to ensure the valve plug (6) remains inside the
valve body (1).
9. Remove the body gasket (Not Shown) from the groove on top
of the valve body (1).
10. Remove the valve plug assembly (6) from the valve cage by
pulling the valve plug stem (8) upward.
11. Remove the cage (4) by lifting the part out of the valve
body (1).
12. Remove the seat ring (5) by lifting the part out of the valve
body (1).
Note: The upper seat ring gasket (24) is located on the top
groove of the seat ring.
13. Remove the lower seat ring gasket (24) from the valve body
(1).
14. Remove the packing set (11) and the guide bushing (26)
from the bonnet (2).
Plug Stem Disassembly
CAUTION
CAUTION
WARNING
DANGER
The valve plug assembly is screwed and pinned to en-
sure stability and performance. Due to the critical pur-
pose of the plug assembly and tolerance requirements,
Baker Hughes highly recommends avoiding in the eld
maintenance of this part. The plug assembly should be
purchased as a complete assembly. However, if urgent
eld repair is required, follow the instructions below.
The valve plug stem is screwed into the valve plug (6) and pinned.
To disassemble the stem, the valve plug must be held as shown
below in Figure 1, taking care not to damage the guiding surfaces.
Disassemble the plug stem groove pin (9) from the assembly.
Pilot Dismounting Screw Sizes
Diameter
Qty.
1/4"- 20 UNC 2A57.02
3/8"- 16 UNC 2A
63.52
Valve Size
mmin.
1506
2008
70.02
101.53
25010
30012
101.5340016
Length
mmin.
2.25
2.50
2.75
4.00
4.00
Figure 1: Correct Plug Clamping Surface

Masoneilan 49000 Series Energy Management Control Valves | 5Copyright 2020 Baker Hughes Company. All rights reserved.
By means of flats or using a nut and counter-nut on the end of the
stem, unscrew the stem from the plug taking care not to apply a
bending movement which could deform it.
Maintenance & Repair
The purpose of this section is to provide recommended
maintenance and repair procedures. These procedures assume
the availability of standard shop tools and equipment.
Maintenance
Packing Box
Tight sealing within the packing box is obtained by compression
of the packing (15). Compression must be achieved by evenly
tightening the packing flange nuts (19) on the packing flange (17).
Periodic re-tightening of the packing flange nuts may be required
to maintain proper sealing.
CAUTION
CAUTION
WARNING
DANGER
Be careful not to over tighten the packing as this
could prevent proper operation of the valve. If leakage
persists after maximum packing compression, then the
packing needs to be changed.
PTFE Packing
Carbon/PTFE and pure PTFE packing rings are cut in such a way
that they can be replaced without having to separate the valve plug
stem from the actuator stem.
1. Unscrew and remove the packing flange nuts (19).
2. Lift the packing flange (17) and packing follower (16) up along
the valve stem (8).
3. By means of a puller, remove the packing (15) being careful
not to damage the sealing surface of the packing box or the
valve plug stem.
4. Replace the packing rings, placing the cut in each ring about
120° apart from the adjacent ring. Press rings in one at a time.
5. Reassemble the packing follower (16) and the packing flange
(17).
6. Tighten the packing flange nuts (19) without over compressing
the packing rings.
7. Put the valve back into service and check for leakage.
8. Tighten packing flange nuts (19) as required.
Valve with Graphite Packing
To replace Graphite packing, it is necessary to separate the valve
plug stem from the actuator stem.
1. Remove the packing flange nuts (19) from the packing flange
studs (18).
2. Lift the packing flange (17) and packing follower (16) up along
the valve stem (8).
3. By means of a puller, remove the packing (15) being careful
not to damage the sealing surface of the packing box or the
valve plug stem.
4. Replace the packing (15). Press a back-up ring (carbon/
graphite/Inconel braided ring) into the bonnet (2). Next press
the expanded graphite rings into the packing area one at a
time. Press an additional back-up ring into packing area.
5. Reassemble the packing follower (16) and the packing flange
(17).
6. Tighten the packing flange nuts (19) without over- compressing
the packing rings.
7. Open and close the valve several times then retighten the
packing as required.
8. Put the valve back into service and check for leakage.
9. Tighten packing flange nuts (19) as required.
Repair of Parts
Prior to reassemble, examine parts carefully for any scratches,
unusual wear, or other damage.
Guiding Surfaces
Guiding surfaces of the cage, valve plug, guide bushing, plug
stem, and auxiliary pilot plug must be checked. See Figures 2
and 3. If there are only slight wear indications, then gently use a
light abrasive, such as fine grit sandpaper, to smooth out guiding
surfaces. Parts with greater damage or wear on the guiding
surfaces must be replaced.
Seating Surfaces
The seat ring seating surface and valve plug seating surface must
be completely free of dents, wear, or scratches. Consult factory
should you see any signs of slight deterioration prior to attempting
touchup. If a slight defect exists on either the seat ring seating
surface or the valve plug seating surface, lapping can be applied
per the following instructions.
1. CIean body gasket surface areas.
2. Install a new seat ring gasket (10B).
Note : Seat ring gasket (10B) is temporarily placed to hold
the seat ring during lapping.
It is imperative to use a new gasket or a test part having
the same geometrical characteristics in order to insure
the correct position of the seat ring during lapping.
Figure 2

6 | Baker Hughes Copyright 2020 Baker Hughes Company. All rights reserved.
Metal Seal
For the two piece bonnet configurations:
Prior to reassembly, the metal seal (11) should be inspected for
cracks or signs of wear. The metal seal can be reused if it is free
from scratches, erosion, corrosion, or any other type of damage.
If slight wear exists on the metal seal, a new layer of coating should
be re-applied to the original condition by the factory or a Masoneilan
Authorized Repair Center.
Prior to reassembly of the valve, inspect the inside of the valve
body around the area where the metal seal seats. It is common to
find slight ridges or depressions from where the seal was originally
seated. During initial assembly these depressions aid in the sealing
of the valve, however these areas can become leak paths during
reassembly if the surface is not restored to its original finish as
described below.
Figure 4
To prevent this potential leakage, machine the seating angle of the
bonnet at 40 degrees by approximately 0.1 inches (2.5 mm) deep,
thus causing the metal seal to seat further down inside the valve
body (on a new un-deformed surface). Refer to Figure 4 for details.
If this procedure is required more than twice please consult factory.
Valve Plug
If the valve plug needs to be repaired see instructions for Valve
Re-assembly.
Valve Reassembly
Pinning the Valve Plug
The valve plug assembly consists of a stem (16) that is threaded
into The valve plug assembly consists of a stem (8) that is threaded
into the valve plug (6). To secure this assembly, the stem (8) is then
pinned (9) to the valve plug (6).
If the valve plug (6) or stem (8) needs to be replaced, an entire
assembly should be purchased from the factory to ensure product
strength and integrity. Re-machining of these parts in the field can
seriously impair the mechanical strength and integrity of the valve
plug stem assembly.
Completing Valve Body Assembly
Proceeds as follows:
Seat Ring Installation
1. After checking all sealing surfaces to ensure they are
thoroughly clean, assemble the seat ring gasket (10B) in the
valve body (1). Make sure the gasket is centered properly in
the body.
This gasket (or similar part) can be kept after lapping for
future lapping use.
Figure 3
The gasket used for lapping must not be reused for the body
reassembly.
3. Place seat ring (5) or seat ring diffuser (Not Shown) in the
body, noting the seating angle is up.
4. Spread a fine layer of high quality lapping compound (600 grit)
on the seating surface.
5. Assemble the cage (4) and (if applicable) cage retainer (Not
Shown) and the plug assembly (Items 6, 8 & 9) into the valve
body (1) per the valve plug assembly instructions.
6. Assemble the bonnet (2) and the guide bushing (7).
7. Place an appropriate tool on the valve stem (8) thread to allow
for manual rotation.
8. Lap by slightly rotating the valve plug in alternate directions.
9. After several rotations, lift the valve stem, turn it 90 degrees,
and repeat the operation.
10. Lapping can be repeated, but should be limited as much
as possible so that the seat remains sufficiently narrow to
guarantee tightness.
11. After lapping, disassemble the parts to clean them and then
reassemble, making sure the seating angles are within
tolerance. See Figure 3.
Note: For more details on the lapping procedure and
seating angles, please consult the factory and provide
the valve serial number (found on the serial plate on the
actuator).
Gaskets
Gasket seating surfaces must be free of dents, scratches,
corrosion, or other types of damage. Clean mating surfaces as
required and replace any non-conforming parts. Spiral wound
gaskets (10) must always be replaced after disassembly.
Seal Rings
Seal rings (14), back-up rings (22), retaining ring (Not Shown),
and conical springs (Not Shown) can be reused if they are free of
scratches, erosion, corrosion, or other damage.

Masoneilan 49000 Series Energy Management Control Valves | 7Copyright 2020 Baker Hughes Company. All rights reserved.
2. Assemble the seat ring (5) or seat ring diffuser (Not Shown)
into the valve body on top of the seat ring gasket (10B),
ensuring that the threaded lifting holes are facing up.
Trim, Bonnet and Body Assembly
1. Place pinned plug stem assembly vertically on stable surface.
Carefully lift cage (4) and lower over plug stem assembly.
(Threaded holes are provided in cage for lifting).
2. Attach lifting eye to stem attach thread. Lift plug stem and
cage together using lifting eye. (Plug will stop against shoulder
inside of cage).
3. Carefully lower plug stem assembly and cage into the body
until the cage contacts the seat ring. Be sure that the cage
is aligned with and fully seated against the seat ring (5) and
that the seat gasket (10B) and cage gasket (10A) are in place.
Continue to lower until plug is seated and remove hoist and lift
eye.
Note: Correctly assembled valves with in specification
components should pass leakage testing with no lapping
of the plug to seat-ring. In the rare instance that a valve
does not shut off, light lapping of the plug to seat is
allowed as a repair.
Balance Seal Installation (B019)
Flow to open installation (FTO):
1. Ensure that the plug and the seal groove are clean and free of
sharp edges.
2. Lightly lubricate the seal (14), backup rings (22), top of plug
and seal groove with Dow Corning 111 or equivalent.
3. Position the two backup rings over plug and seat them in the
groove as illustrated. Slip the Omni seal (14) over the plug
ensuring that the open (cup) end of the seal faces up and
seats against the backup rings. (See Figure 5a.)
Flow to close installation (FTC):
1. Ensure that the plug and the seal groove are clean and free of
sharp edges.
2. Lightly lubricate the seal (14) backup rings (22), top of plug
and seal groove with Dow Corning 111 or equivalent.
3. Slip the Omni seal over plug ensuring that open (cup) end of
the seal faces down and seat it in the groove.
4. Position the two backup rings over plug and seat against the
Omni seal as illustrated. (See Figure 5b.)
Balance seal, metal (high temp) type FTO and FTC (seal is
non-directional):
1. Ensure that the plug and the seal groove are clean and free of
sharp edges.
2. Lightly lubricate the seal, inner and outer rings, top of plug and
seal groove with Dow Corning 111 or equivalent.
3. Slide the rings over plug and seat in the groove. Be sure to
stagger the end gaps of the inner and outer rings.
Bonnet Assembly
1. Make sure the packing (15) and guide bushing (7) have been
removed from the bonnet (2).
2. Position the bonnet (2) above the valve body (1), oriented as
shown in Figure 6.
Figure 5a: Flow to Open
For configurations designed with a two piece bonnet (bonnet
and bonnet flange):
3. Assemble the bonnet (2) over the valve stem (8) and push it
down carefully. Be careful not to damage the stem during the
assembly process.
Figure 5b: Flow to Close
4. Place the metal seal (11) over the bonnet (2) and press the
metal seal down into the groove formed between the body
and the bonnet.
5. Assemble the bonnet flange (3) over the bonnet (2) and align
the bolt holes with the body studs (12). Make sure the bonnet
flange is also aligned with the metal seal (11). Proceed to step
8.
For trim configurations designed with a single piece bonnet:
6. Install body gasket (Not Shown) on to the groove on top of the
valve body (1).
7. Assemble the bonnet (2) over the valve stem (8) and push
it down carefully to align the bolt holes with the body studs
(12). Be careful not to damage the stem during the assembly
process. Be sure the bonnet is oriented as shown in figure 6.
8. Grease the threads of the valve body studs (4) and the bearing
surfaces of the body stud nuts (13).
9. Assemble the body stud nuts (13) manually. Hand- tighten the
nuts evenly so the internal parts are held in place. The face
of the bonnet should be parallel to the upper face of the valve
body.
Tightening Body Nuts
In order to achieve perfect alignment of the body and the internal
components, it may be beneficial to provide loading to the plug
stem assembly (Items 6, 8 & 9) during tightening. This may benefit
the positioning of various parts in installations where the actuator
and trim are installed horizontally.

8 | Baker Hughes Copyright 2020 Baker Hughes Company. All rights reserved.
The force can be applied with the actuator as follows:
Place the actuator on the valve bonnet (2) by means of the yoke
nut or bolts (Not Shown) and connect the valve plug stem (8) to
the actuator stem.
CAUTION
CAUTION
WARNING
DANGER
During this operation, make sure the plug does not
turn when it is seated. If the plug travel is very small
and there is a large amount of plug stem inside
the actuator, it may be necessary to remove the
yoke nut and lift the actuator so that the plug is not
touching the seat.
Refer to the appropriate instruction manual for the actuator and
each unique accessory.
Tighten the bonnet stud nuts to the appropriate torque value found
in Table 1. Tighten in sequence using at least 5 equal increments
of torque. (See Figure 7 for torque sequence and recommended
torque steps). It is important to ensure that the bonnet and bonnet
flange are tightened down evenly to ensure proper alignment and
fit of the internal components required for smooth valve operation
and performance. In larger sizes ( 12” and larger), it is highly
recommended that two assembly personnel, directly opposed
to one another, perform the torque sequence and assure even
installation; i.e. no tipping or uneven gaps between the bonnet
flange and body.
At each torque step, torque down the bolting with no bushing
installed and check alignment of the stem and packing bore, then
test fit the stem bushing (7) to ensure that plug to cage alignment is
maintained. After tightening, be sure that the bonnet studs protrude
by at least one thread above the nuts. Studs with less than one
thread above the nut are cause for rejection.
Packing Box Assembly
If applicable, slide the guide bushing (7) onto the valve plug stem
(8) and let it drop to the bottom of the packing box.
Assemble the packing box components per the maintenance
instructions in the Packing Box maintenance procedure on
page 5.
Figure 6: Bonnet orientation
Note: Tighten bonnet nuts in five equal steps.
Figure 7: Torque Sequence

Masoneilan 49000 Series Energy Management Control Valves | 9Copyright 2020 Baker Hughes Company. All rights reserved.
BODY STUDS AND NUTS ASSEMBLY TORQUE
Nominal sizes (inch)
ASME Classes
Sizes of Studs (inch)
No. of Studs & Nuts
Studs Part No.
Stud Projection
Required protru-
sion from Body
with studs bot-
tomed +/- 6.5
[0.25]
•Body/bonnet material:
Carbon steel, Chrome moly
Stainless steel, Duplex
• Bolts / nuts materials:
A193 Gr B7 / A194 Gr 2H,
A193 Gr B7M / A194 Gr 2HM,
A320 Gr L7 / A194 Gr 7,
A193 Gr B16 / A194 Gr 7
A453 Gr 660 /A194 Gr 7.
A 453 Gr 660 / A 194 GR 8.
mm [inch] Torque mdaN Torque [ft lbs]
3
600 1.250-8 UN-2A 8 011514429 127.8 5.03 66 76 490 560
1500 1.750-8 UN-2A 8 400120877 184.3 7.26 200 230 1500 1700
2500 2.250-8 UN-2A 8 011487935 228.1 8.98 390 450 2900 3300
4
600 1.250-8 UN-2A 8 011514429 127.8 5.03 66 76 490 560
1500 1.750-8 UN-2A 8 400120877 184.3 7.26 200 230 1500 1700
2500 2.250-8 UN-2A 8 011487935 228.1 8.98 390 450 2900 3300
6
600 1.375-8 UN-2A 8 400139447 136.0 5.35 89 103 660 760
1500 1.875-8 UN-2A 8 365637000 202.0 7.95 260 300 1900 2200
2500 2.250-8 UN-2A 8 400148235 263.3 10.37 490 560 3600 4100
8
600 1.375-8 UN-2A 12 720016107 151.0 5.94 84 96 620 710
1500 1.875-8 UN-2A 12 001247622 221.1 8.70 260 300 1900 2200
2500 2.250-8 UN-2A 12 720015679 288.3 11.35 470 540 3500 4000
10
600 1.625-8 UN-2A 12 720017027 194.0 7.64 150 160 1100 1200
1500 2.250-8 UN-2A 12 400148235 263.3 10.37 410 460 3000 3400
2500 2.750-8 UN-2A 12 720009360 357.3 14.07 850 960 6300 7100
12
600 1.500-8 UN-2A 16 400112840 202.2 7.96 120 140 920 1030
1500 2.250-8 UN-2A 16 720015679 288.3 11.35 410 460 3000 3400
2500 3.000-8 UN-2A 16 720016109 419.0 16.50 1060 1170 7800 8600
16
600 1.875-8 UN-2A 16 400134919 250.3 9.85 240 270 1800 2000
1500 2.750-8 UN-2A 16 720016110 368.3 14.50 830 920 6100 6800
20
600 1.750-8 UN-2A 20 720016112 259.3 10.21 220 240 1600 1800
1500 2.750-8 UN-2A 20 720016111 407.3 16.04 840 940 6200 6900
24 600 2.000-8 UN-2A 20 720015678 299.5 11.79 340 380 2500 2800
30 600 2.250-8 UN-2A 20 720016108 336.5 13.25 490 540 3600 4000
Table 1: Torque Values

10 | Baker Hughes Copyright 2020 Baker Hughes Company. All rights reserved.
Figure 8: Typical Assembly

Masoneilan 49000 Series Energy Management Control Valves | 11Copyright 2020 Baker Hughes Company. All rights reserved.
Plug Stem Diameter N1 (turn) in mm
1” 1.25 0.09 2.3
3/4” 1.25 0.08 2.0
Table 2: Type 88 , Air to Open – Valve Seating
• Recommended spare part (some parts may not be
applicable to all designs)
Note: Actual parts list may differ according to specific valve
supplied
Item No. Description
1 Body
2 Bonnet
3 Bonnet Flange
4Cage (V-LOG Stack)
5 Seat Ring
6Plug
7 Guide Bushing
8Plug Stem
9Plug Pin
10 Gasket
11 Metal Seal (Bridgeman)
12 Body Bonnet Stud
13 Body Bonnet Hex Nut
14 Balance Seal
15 Packing Ring
16 Packing Follower
17 Packing Flange
18 Packing Stud
19 Packing Nut
20 Anti-Extrusion Ring
21 Disc Spring
22 Backup Ring
•
•
Actuation
Type 87/88 Multi-Spring Diaphragm Actuators
Connecting Type 87 (Air to Extend) No. 10, 16 and 23 Actuators
(Figure 9a & 9b)
1. Install actuator on the valve body with drive nut (33). Tighten
drive nut
2. Position top and bottom stem connectors (2 and 4) and replace
the two socket head cap screws (5).Turn the plug stem as far
as possible into lower part of the stem connector (2 or 6) refer
to Table 3 and figure 11b for stem connector positioning.
3. Pneumatically or with the handwheel, stroke the actuator to
the rated spring range or stroke (if using the handwheel).
4. Using the stem lock nuts (1) unscrew the plug stem until the
plug touches the seat.
CAUTION
CAUTION
WARNING
DANGER
DO NOT TURN the plug against the seat as damage to
parts can occur
5. Release the pressure in the actuator or back off the handwheel
to raise the stem.
Connecting Type 88 (Air to Retract) No. 10, 16 and 23 Actuator
(Figure 10a & 10b)
1. Connect manual loading panel tubing to lower diaphragm case
2. Apply required air pressure to completely retract stem (10).
3. Install actuator on the valve body with drive nut. Tighten the
drive nut.
4. Apply initial air pressure and unscrew the top stem connector
(4) in accordance with dimension “X” in Table 3 and figure 10b.
CAUTION
CAUTION
WARNING
DANGER
DO NOT TURN the plug against the seat as damage to
parts can occur
5. Release air pressure
6. Using stem lock nuts (1), unscrew the plug stem until the plug
touches the seat.
7. Pneumatically or with the handwheel, stroke the actuator to
raise the plug off the seat. Unscrew the plug stem one full turn
and lock the stem in place with the lock nut(s) (1) against the
stem connector or flange (2 or 6).
8. Line up the travel scale (9) with the pointer and check actuator
for proper operation.

12 | Baker Hughes Copyright 2020 Baker Hughes Company. All rights reserved.
Actuator
Size
Travel “X”Actuator 87 “X”Actuator 87
in mm in mm in mm
10 0.8 20 5.12 130 4.62 117.3
10 1.5 38 5.44 138.2
16 0.8 20 8.00 203.2
7.02 178.3
16 1.5 38 8.50 228.6
16 2.0 51 9.28 235.7
16 2.5 63.5 9.50 241.3
23 0.8 20 8.25 209.5
23 1.5 38 8.62 218.9
23 2.0 51 9.12 231.6
23 2.5 63.5 9.59 243.6
Table 3: Position of Top Stem Connector
Parts Reference For Spring Diaphragm Actuators - Type 87/88
Multispring
Item No. Description
1Hex Nut
2 Stem Connector, Bottom
3Cap Screw, Hex Head
4 Stem Connector, Top
5 Cap Screw, Socket Head
6 Connector Insert
7Pointer
8Screw, Pan Head
9 Scale, Travel
10 Actuator Stem
31 Yoke, Machining
32 Lock Nut
33 Yoke Nut

Masoneilan 49000 Series Energy Management Control Valves | 13Copyright 2020 Baker Hughes Company. All rights reserved.
Figure 10b
Type 88 Actuator
Air to Retract (Open)
Figure 9b
Type 87 Actuator
Air to Extend (Close)
Figure 9a
Type 87 Air to Close
No. 10-16-23
Figure 10a
Type 88 Air to Open
No. 10-16-23

14 | Baker Hughes Copyright 2020 Baker Hughes Company. All rights reserved.
Type 51/52/53 Cylinder Actuators
Connecting Double Acting (Model 51) (Figures 13)
1. Install actuator on the valve body with drive nut.
2. Connect manual loading panel tubing to the Top Plate (17).
3. Apply required air pressure through the manual loading panel
to completely extend the actuator stem.
4. Reconnect manual loading panel tubing from the Top Plate
(17) to the Yoke (1), which is integrated into the bottom plate
connection.
5. Retract the actuator stem either pneumatically or with a
handwheel approximately 1” (2mm) using the visual stroke
scale as shown in Figure 11.
Figure 11
6. Assemble the Split Clamp (22).
Note: If the split clamp does not engage with both
stems, then retract the actuator stem until alignment and
engagement is achieved.
CAUTION
CAUTION
WARNING
DANGER
Make sure the valve is fully extended. Use caution to
keep appendages clear of pinch points.
Figure 12
7. Assemble and tighten Indicator Arm (23), Spring Lock
Washers (25), and Hexagon Bolts (24).
8. Line up the indicator plate (26), with Indicator arm (23) and
check actuator for proper operation.
Connecting Air to Extend (Model 52)
(Figure 14)
1. Install actuator on the valve body with drive nut.
2. Connect manual loading panel tubing to the top plate (17).
3. Apply required air pressure through the manual loading panel
to completely extend the actuator stem.
4. Retract the actuator stem either pneumatically or with a
handwheel approximately .1” (2mm) using the visual stroke
scale as shown in Figure 11.
5. Assemble the Split Clamp (22).
Note: If the split clamp does not engage with both
stems, then retract the actuator stem until alignment and
engagement is achieved.
CAUTION
CAUTION
WARNING
DANGER
Make sure the valve is fully extended. Use caution to
keep appendages clear of pinch points.
6. Assemble and tighten Indicator Arm (23), Spring Lock
Washers (25), and Hexagon Bolts (24).
7. Line up the indicator plate (26), with Indicator arm (23) and
check actuator for proper operation.
Connecting Air to Retract (Model 53)
(Figure 15)
1. Install actuator on the valve body with drive nut.
2. Connect manual loading panel tubing to the yoke (1), which is
integrated into the bottom plate connection.
3. Retract the actuator stem either pneumatically or with a
handwheel approximately .1” (2mm) using the visual stroke
scale as shown in Figure 11.
4. Assemble the Split Clamp (22).
Note: If the split clamp does not engage with both stems,
retract the actuator stem until alignment and engagement
is achieved.
CAUTION
CAUTION
WARNING
DANGER
Make sure the valve is fully retracted. Use caution to
keep appendages clear of pinch points.
5. Assemble and tighten Indicator Arm (23), Spring Lock
Washers (25), and Hexagon Bolts (24).
6. Line up the indicator plate (26), with Indicator arm (23) and
check actuator for proper operation.
.1” (2mm)

Masoneilan 49000 Series Energy Management Control Valves | 15Copyright 2020 Baker Hughes Company. All rights reserved.
Figure 14
Model 52 (air to extend)
without handwheel
Figure 13
Model 51 Double Acting
Without volume chamber
Figure 15
Model 53 (air to retract)
without handwheel

16 | Baker Hughes Copyright 2020 Baker Hughes Company. All rights reserved.
Parts Reference Table 51/52/53 Actuators
• Recommended Spare Parts
Ref
No. Description Ref No. Description
1 Yoke 24 Hexagon bolt
2Piston rod S/A 25 Spring lock washer
3Lower spring but-
ton 26 Indicator plate
4 Spring 27 Cross recessed head
screw
5Hexagon socket
head cap screw 28 Exhaust pipe
6Spring lock
washer 29 Spring lock washer
7Spring tube 30 Plug
8Guide bushing 31 Piston S/A
9Compression bolt 32 Guide bushing
10 Upper spring but-
ton 33 O ring (Piston rod)
11 Thrust bearing 34 Rod scraper
12 Compression nut
13 Separator plate
Model 52/53
14 Cylinder tube
Cylinder tube
15 Guide ring
16 Guide ring
17 Top plate
18 Set screw
19 Center bolt
20 Hexagon nut
21 O ring (Piston, Top
plate)
22 Split clamp
23 Indicator arm
• •
•
•
•
•
•