Emerson Fisher TBX User manual

www.Fisher.com
FisherrTBX Steam Conditioning Valve
Contents
Introduction 1.................................
Scope of Manual 1.............................
Description 1.................................
Educational Services 4.........................
Installation 4..................................
Maintenance 7.................................
Servicing 8...................................
Removal of Valve Bonnet and Trim 8.............
Nozzle Maintenance and Replacement 10.........
Valve Assembly 13............................
Parts Ordering 22...............................
Parts List 22...................................
Figure 1. Fisher TBX Steam Conditioning Valve
X0165
Introduction
Scope of Manual
This instruction manual includes installation, maintenance, and operation information for the Fisher TBX control valve.
Refer to separate instruction manuals for instructions covering the actuator and accessories.
Do not install, operate, or maintain a TBX valve without being fully trained and qualified in valve, actuator, and
accessory installation, operation, and maintenance. To avoid personal injury or property damage, it is important to
carefully read, understand, and follow all the contents of this manual, including all safety cautions and warnings. If you
have any questions about these instructions, contact your Emerson Process Management sales office before
proceeding.
Description
The TBX Steam Conditioning Valve (see figure 1) provides a convenient and efficient way to reduce steam pressure
and temperature within a single device. Typical installations include steam backpressure control, turbine bypass,
boiler start-up service, auxiliary steam letdown for drying rolls, kettles, equipment drives, plant heating, and other
loads requiring dependable and accurate control of steam pressure and temperature.
Instruction Manual
D103172X012
TBX Valve
May 2014

Instruction Manual
D103172X012
TBX Valve
May 2014
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Table 1. Specifications for Standard Designs (Physical Specifications)
End Connection Sizes(1)
Valve Inlet: NPS 4 through NPS 24
Valve Outlet: NPS 8 through NPS 36
End Connection Types
JASME Buttweld (all sizes)
JASME Raised Face Flanges (all sizes)
Valve Configuration
Angle Pattern (flow up or flow down)
Valve Body Ratings(2)
ASME: CL150 - CL2500
Bonnet Type
Bolted
Shutoff Classifications per ANSI/FCI 70-2 and IEC
60534-4
Standard: Class V
Optional: Class IV
Flow Characteristics(3)
Whisper Trim™ III: Linear
WhisperFlo™ (flow up only): Linear
Flow Direction
Whisper Trim III: Flow up or down
WhisperFlo: Flow up
Construction Materials
Body/Bonnet
JSA105 Carbon Steel
JSA182GradeF22(21/4 Cr1Mo)
JSA182GradeF91(9Cr1MoV)
Bonnet Bolting
JSA193 Grade B7
JSA193 Grade B16
JN07718
Seat Ring
Welded Seat Ring (flow up only)
JSA105 Carbon Steel with Alloy 6
JSA182GradeF22(21/4 Cr1Mo)withAlloy6
JSA182GradeF91(9Cr1MoV) with Alloy 6
Bolted Seat Ring
JSA182GradeF22(21/4 Cr1Mo)withAlloy6
and N07718 Bolting
JN06625 with Alloy 6 and N07718 Bolting
Plug:
Control Plug
JSA182GradeF22(21/4 Cr1Mo)withAlloy6
Guiding Surfaces
JSA182GradeF91(9Cr1MoV) with Alloy 6
Guiding Surfaces
Stem
JSA479 Type S20910
JN07718
Cage:
Control Cage
JSA182GradeF22(21/4 Cr1Mo)Nitrided
JSA182GradeF91(9Cr1MoV) Nitrided
Lower Cage (flow down only)
JSA182GradeF22(21/4 Cr1Mo)Nitrided
Piston Rings
JAlloy 6B with N07750 Expander
Bore Seal
JN07718
Gaskets
JBonnet: N07750/Graphite
JAll Others: N06600/Graphite
Packing
JGraphite/Flexible Graphite
Nozzles
JS41000 SST
1. Standard end connection sizes. Alternate inlet and outlet sizes available for each valve body size to match piping requirements.
2. Not all valve sizes are available in all valve body ratings.
3. Contact your Emerson Process Management sales office for other flow characteristics.

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TBX Valve
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The TBX Steam Conditioning Valve (figure 1) is designed to handle the most severe applications in today's cycling
powerplantsaswellasprovideprecisepressureandtemperature control for process applications. The TBX
incorporates over 20 years of steam conditioning experience and product development. The valve body is designed
with the latest finite element analysis (FEA) and computational fluid dynamics (CFD) tools to optimize performance
and reliability for demanding steam systems.
The TBX is a flow up or flow down design providing the ultimate combination of performance and maintainability. The
flow down TBX incorporates Emerson Process Management’s low noise Whisper Trim III technology. The flow up TBX
incorporates the same Whisper Trim III technology as the flow down design, but can also be outfitted with WhisperFlo
Trim technology. The simplified trim configuration is thermally compensated to handle the rapid changes in
temperatures expected during a turbine trip.
Water atomization and vaporization are key elements in any steam conditioning application. The TBX incorporates a
spraywater manifold consisting of variable geometry Type AF nozzles producing a spray pattern suitable for high
rangeability applications. These nozzles are strategically placed to achieve complete mixing and quick vaporization at
all flowing conditions. Years of research in spray atomization and vaporization were key to optimizing the water
injection system. Extensive use of CFD analysis, in addition to field performance feedback, was used to validate spray
system enhancements.
Figure 2. Typical Fisher TBX Installation
KEY:
DSPL = DOWNSTREAM STRAIGHT PIPE LENGTH
PI = PROPORTIONAL INTEGRAL CONTROLLER
PSL = PRESSURE SENSOR LENGTH
PT = PRESSURE TRANSMITTER
TE = TEMPERATURE SENSOR ELEMENT
TSL = TEMPERATURE SENSOR LENGTH
USPL = UPSTREAM STRAIGHT PIPE LENGTH
USPL
TSL
PSL
DSPL

Instruction Manual
D103172X012
TBX Valve
May 2014
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Educational Services
For information on available courses for the Fisher TBX steam conditioning valve, as well as a variety of other products,
contact:
Emerson Process Management
Educational Services - Registration
P.O. Box 190
Marshalltown, IA 50158-2823
Phone: [phone] or 641-754-3771
FAX: [phone]
e-mail: [e-mail]
Installation
WARNING
Always wear protective gloves, clothing, and eyewear when performing any installation operations to avoid personal
injury.
Personal injury or equipment damage caused by sudden release of pressure may result if the TBX valve is installed where
service conditions could exceed the limits of the pressure rating noted on the nameplate. To avoid such injury or damage,
provide a relief valve for over pressure protection as required by government or accepted industry codes and good
engineering practices.
Check with your process or safety engineer for any additional measures that must be taken to protect against process
media.
If installing into an existing application, also refer to the WARNING at the beginning of the Maintenance section in this
instruction manual.
CAUTION
This valve is intended for a specific range of service conditions (see table 1). Applying different conditions to the valve could
result in parts damage, malfunction of the valve, or loss of control of the process. Do not expose this valve to service
conditions or variables other than those for which this valve is intended. If you are not sure what these conditions are, you
should contact Emerson Process Management for more complete specifications. Provide the product serial number (shown
on the nameplate) and all other pertinent information.
Check that the TBX valve is properly orientated with respect to the flow direction of the valve (either flow up or flow
down). Incorrect installation can result in damage to the valve and poor performance.
1. Before installation, all piping upstream of the valve must be blown clean so that no loose materials such as welding
slag, dirt or other foreign matter, are left in the pipe. Use care to keep foreign matter out of the line openings while
preparing the valve installation.
2. If possible, before fitting in the line, connect the actuator to a temporary air supply and operate to verify
positioning. Disconnect the instrument lines (if applicable).

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TBX Valve
May 2014
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WARNING
Do not lift the valve by its actuator yoke or cooler manifold piping. Personal injury or damage to equipment could occur if
the valve is improperly lifted into place.
If the TBX is equipped with buttweld ends, the valve body must be supported using a lifting sling or other method that does
not place a load or force onto the finished surface of the buttweld ends. The TBX does not have a stable resting condition.
The valve inlet and outlet must be fully supported until fully welded (buttweld end connections) or bolted (flanged end
connections) into the piping.
3. Arrange a lifting sling around the main valve body to safely lift the valve to the pipe opening.
WARNING
Do not expose the valve to undue stresses by installing it in bent pipes or flanges. Personal injury and equipment damage
could result from flange sealing failure due to improper installation.
4. Flanged Connections–Grease the flange connection bolts with a high temperature thread lubricant. Install flange
gaskets and connection bolts per accepted practices and tighten securely.
5. Welded Connections–Welding procedures should be in accordance with the applicable codes and the base
materials. For preheat, welding electrodes, and postweld heat treatment, refer to the applicable codes and
practices applicable for the specific facility. Materials are specified on the customer specification sheet. Emerson
Process Management recommends the valve be disassembled for welding, however if the valve inlet and outlet
connections are to be welded with the valve assembled, the valve plug should be maintained off the valve seat
during all associated operations. If the valve is to be welded by SMAW process, the valve must be disassembled for
welding to ensure that any weld slag is removed from the valve.
CAUTION
Depending on valve body materials used, post weld heat treating may be required. If so, damage to internal parts is
possible. In general, if post weld heat treating is to be performed, all trim parts and nozzles should be removed. Contact
your Emerson Process Management sales office for additional information.
6. Remove the spraywater control valve and flush the cooling water line until all debris is removed from the line prior
to connecting it to the TBX valve. Use only clean sources of cooling water to reduce the possibility of nozzle
clogging.A100meshstrainershouldbeinstalledinthewaterlineasclosetotheTBXvalveaspossible.Review
strainer manufacturer's pressure drop curves to determine appropriate strainer body size. You may need to use a
strainer that is larger than the water line size.
WARNING
Failure to use a strainer could result in nozzle clogging and subsequent property damage or loss. Uncontrolled
temperatures resulting from clogged nozzles may result in equipment or process temperature limits being exceeded.
Exceeding system temperature limits could result in property damage or personal injury.
7. A length of straight pipe is required downstream of the TBX valve to ensure complete vaporization of cooling water.
An example of a typical installation appears in figure 2. Consult the TBX cooler sizing sheet for the required distance
of straight pipe. This is unique for each application and is supplied by Emerson Process Management.

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TBX Valve
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8. Typically, a temperature sensor should be mounted a minimum distance of 9.1 m (30 feet) downstream of the TBX
valve. This distance will vary depending on a number of factors including steam velocity and percentage of
spraywater. Consult the cooler sizing sheet provided with the unit for this temperature sensor distance. The steam
line should not have any branch lines dividing the steam flow between the TBX valve and the temperature sensor. If
you have any questions, contact your local Emerson Process Management sales office.
9. A typical installation is illustrated in figure 2. A pressure transmitter senses the pressure downstream (or upstream
in backpressure control applications). The pressure controller sends a signal to the actuator positioner opening or
closing the TBX valve as required to maintain pressure. A rising stem opens the TBX valve to allow additional steam
flow. A temperature sensor (TE) measures changes in temperature and a temperature transmitter (TT) transmits
the signal to the temperature control device. The output signal from the controller is sent to the positioner on the
cooling water (spraywater) control valve (SWCV). The positioner's output signal strokes the SWCV open, increasing
water pressure on the nozzles. Increasing water pressure upstream of the nozzles increases water flow through the
nozzles.
CAUTION
Pneumatic lines (where applicable) should be thoroughly blown clean with dry air before connection. Check electronic
lines for correct connection.
10. If foreign debris has been introduced into the valve or upstream piping during installation, it must be removed
prior to using the valve for the first time. A Blowout or Blowdown tool can be purchased to match the TBX valve and
facilitate piping blowdown without removal of the valve from the line. Contact your Emerson Process Management
sales office for pricing and availability of fixtures. Review Fisher instruction manuals, TBX Blowout Fixture
(D103206X012) and Fisher Blowdown Fixture (D103207X012) prior to use.
11. After cleanliness of the piping system has been assured, connect instrumentation and power supply to the TBX
valve actuator and associated equipment.
12. Monitor the TBX valve as the system is brought on line. Some visible vapors may be seen as the lubricants are
heated. If you see any steam leaks after startup, follow isolation and disassembly procedures and disassemble the
valve and replace the gaskets (key 43). If the packing box leaks, tighten hex nuts (key 68). If leakage continues,
replacethepacking(key64).BesuretoproperlyisolatetheTBXvalvepriortodisassemblyofvalveorpacking.
WARNING
Packing box hex nuts should not be tightened when the valve is under pressure or at elevated temperature. Failure to
properly tighten the packing box nuts could lead to personal injury or equipment damage.

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TBX Valve
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Maintenance
It is recommended that diagnostic tests be preformed on the valve 3-6 months prior to scheduled maintenance
shutdowns. Complete valve disassembly is recommended if tests performed on the valve indicate leakage, sticking, or
substandard operation. If diagnostics indicate normal valve operation, complete disassembly and inspection of the
TBX is recommended during every other regularly scheduled outage or after 24-36 months, whichever comes first.
Table 2 identifies the recommended inspection tips and diagnostics that can be performed with corresponding repair
and replacement information.
Table 2. Inspection Summary
Key Part Description Inspection Tips and Diagnostics Repair Replacement
1Valve Body Inspect for erosion, thermal fatigue, and other
damage.
Consult your local Emerson Service Center for a recommendation on
necessary weld repair or replacement if damage exists.
6Bonnet
Inspect gasket surfaces for damage that could indicate
gasket leakage. Inspect packing box to ensure no
galling, scoring, or particulate is present.
If damage exists consult your local Emerson Service Center for a
recommendation on necessary weld repair or replacement.
20 Nozzle Body Flange Inspect gasket surfaces for damage that could indicate
gasket leakage when spray nozzles are replaced. Replacement Only As needed
21 Cage
Inspect cage bore for excessive wear, galling damage,
particulate damage, and flow passage damage or
clogging.
Consult your local Emerson Service
Center for a recommendation on
necessary repair or replacement if
damage exists.
As needed for optimal
performance
22 Plug
Inspect for seat erosion, excessive wear, galling
damage, and particulate damage, paying close
attention to the seating and guiding surfaces.
Re-cutting/machining of seating
surfaces can be performed by your
local Emerson Service Center.
As needed for optimal
performance
23, 53 Stem and Stem Pin Inspect stem for dings, scoring, and galling. Inspect
valve stem connection for tightness.
Valve stem connection can be
repaired by your local Emerson
Service Center.
As needed
24 Seat Inspect for seat erosion, particulate damage, galling,
and proper bolt torque (if applicable, refer to table 5).
Re-cutting/machining of seating
surfaces can be performed by your
local Emerson Service Center.
As needed to maintain proper
shutoff
25 Plug Retainer Inspect for excessive wear, galling, and other damage. Repair can be performed by your
local Emerson Service Center. As needed
30 Spray Nozzle Refer to Nozzle Maintenance Section. Replacement every 24-36 months
for optimal performance
37 Nozzle Sleeve Inspect for particulate or magnetite buildup when
spray nozzles are replaced. Clean if necessary. As needed
43, 47, 48,
75 All Gaskets Every valve disassembly requires replacement of gaskets. Replacement Only Every valve disassembly
45 Piston Ring
Inspect for particulate buildup, scoring, and excessive
wear. Ensure piston ring is free to expand and contract
in the groove.
Replacement Only As needed
46 Bore Seal Ring Inspect for excessive wear, galling, signs of leakage,
and other damage. Replacement Only Every 36 months for optimal performance
63 Packing Box Ring Inspect for scoring, galling, and other damage. Replacement Only As needed
64 Packing Set Every valve disassembly requires replacement of the
packing set. Replacement Only Every valve disassembly
65 Packing Follower Inspect for scoring, galling, and other damage. Replacement Only As needed
66 Packing Flange Inspect for scoring, galling, and other damage. Replacement Only As needed

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TBX Valve
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Servicing
WARNING
Avoid personal injury or property damage from sudden release of process pressure or bursting of parts. Before performing
any maintenance operations:
DDo not remove the actuator from the valve while the valve is still pressurized.
DAlways wear protective gloves, clothing, and eyewear when performing any maintenance operations to avoid personal
injury.
DDisconnect any operating lines providing air pressure, electric power, or a control signal to the actuator. Be sure the
actuator cannot suddenly open or close the valve.
DUse bypass valves or completely shut off the process to isolate the valve from process pressure. Relieve process pressure
from both sides of the valve. Drain the process media from both sides of the valve.
DVent the power actuator loading pressure and relieve any actuator spring precompression.
DUse lock-out procedures to be sure that the above measures stay in effect while you work on the equipment.
DThe valve packing box may contain process fluids that are pressurized, even when the valve has been removed from the
pipeline. Process fluids may spray out under pressure when removing the packing hardware or packing rings, or when
loosening the packing box pipe plug.
DCheck with your process or safety engineer for any additional measures that must be taken to protect against process
media.
Shut off water and steam flow and vent all system pressure before breaking any pressure boundaries.
WARNING
Residual system pressure may be released during the following steps if the system was improperly isolated or vented.
Use extreme care to prevent personal injury while loosening any fasteners in the pressure boundary.
Removal of Valve Bonnet and Trim
1. Disconnect all external connections to the positioner and actuator and remove the actuator from the valve. Consult
the actuator manufacturer's documentation for assistance in actuator removal.
2. Loosen and remove the hex nuts (key 68) along with the packing follower (key 65). If possible, remove packing set
(key 64) from the packing box.
3. Loosen bonnet stud nuts (key 55) using an even pattern to avoid uneven expansion of the gaskets. Remove the
entire bonnet assembly (key 6), pulling evenly in line with the valve stem (key 23) centerline. Uneven bonnet
removal can result in galling or bending of the valve stem. If difficulty is encountered in removing the bonnet, check
the bonnet for alignment and straighten the bonnet before making further attempts to remove it from the valve
body.

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TBX Valve
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CAUTION
The bonnet must be handled with care while being removed from the body. Damage to the bonnet can result in gasket
leakage while the valve is in service.
Protect the bonnet by placing it on clean cloth or wood while the valve is disassembled.
4. Dislodge any remaining packing (key 64) from the packing box and discard. Remove the packing box ring (key 63)
from the bottom of the packing box. Inspect all parts: packing box, packing box ring (key 63), packing follower (key
65), valve stem (key 23), hex nuts (key 68) and studs (key 69) for signs of wear. Replace parts that are damaged or
show excessive wear.
5. Inspect the bonnet guiding surfaces and gasket mating surfaces. Light damage on the guiding surface may be
repaired with an emery cloth or other suitable material. Damage to the gasket mating surface may require bonnet
replacement to avoid leakage.
6. Remove the plug assembly (flow up and flow down: keys 22, 23, 25, and 53) as a single unit by grasping the valve
stem (key 23) and pulling the assembly from the body cavity. The plug assembly contains sensitive guiding and
sealing surfaces on its outside diameter and care must be taken in its handling. Protect the plug by placing it on
clean cloth or wood while the valve is disassembled.
7. Flow Up Construction only: If the TBX has a magnetite catcher (key 79) and excess magnetite buildup is present,
remove the magnetite catcher located in the bore of the plug (key 22) by cutting the tackwelds at the base of the
part and unscrewing from the plug. Clean as necessary to remove magnetite buildup.
8. Removethecage(key21)fromthevalvebody.Removeanddiscardtwo(2)cagegaskets(key43).Reference
figures 13, 12, and 11 for guidance in performing this disassembly. The cage contains sensitive guiding surfaces on
its inside and outside diameter and care must be taken during handling. Protect the cage by placing it on clean cloth
or wood while the valve is disassembled.
9. ANSI/FCI 70-2 Class V constructions only: Clean and inspect the guiding and sealing surfaces of the plug assembly.
Inspect the piston ring (key 45) and Bore Seal ring (key 46) for signs of excess wear or damage and replace if
necessary. The piston ring is a two-piece design with an outer seal ring and an inner expander ring. The outer ring
diameter should be expanded beyond the diameter of the plug in its free state. It can be shifted within its groove to
inspect for uneven wear around its circumference. The piston ring should require some compression when
installing the plug into the cage. Lack of required compression indicates that the piston ring has worn or relaxed and
should be replaced. Vertical marks in the axial orientation also indicate wear that requires replacement of the ring.
TheBoreSealringhasaC-shapedcrosssection.TheopenportionoftheC-shapefacesthestemsideoftheplugon
flow up valves. The open portion of the C-shape faces theseatingsurfaceoftheplugforflowdownvalves.See
figure 5 for proper orientation. Any uneven marks around the circumference of the ring or any flattening of the ring
shape at its outside diameter are indications of wear and require replacement. Contact your Emerson Process
Management sales office for Bore Seal ring replacement.
ANSI/FCI 70-2 Class IV constructions only: Clean and inspect the guiding and sealing surfaces of the plug assembly.
Inspect the two piston rings (key 45) for signs of wear or damage and replace if necessary. The piston ring is a two
piece design with an outer seal ring and an inner expander ring. The outer ring diameter should be expanded
beyond the diameter of the plug in its free state. It can be shifted within its groove to inspect for uneven wear
around its circumference. The piston ring should require some compression when installing the plug into the cage.
Lack of required compression indicates that the piston ring has worn or relaxed and should be replaced. Vertical
marks in the axial orientation also indicate wear that requires replacement of the ring.
10. Cleanandinspectthecageboreforexcessivewear.Theentirelengthofthecageboreiseitherasealingand/or
guiding surface and any measurable wear requires that the cage be replaced.
11. Welded seat rings remain retained inside the valve body. Clean and inspect the seating surface. Any detectable
damage around the circumference of the seating surface is an indication of wear and requires reconditioning to
ensure seating performance. Contact your Emerson Process Management sales office for specific instructions on
reconditioning the seating surface. If the TBX has a bolted seat ring, remove the cap screws (key 76) and discard the

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gasket(s) (key 75) that sit between the valve body and seat ring. Inspect cap screws for damage and excessive wear;
replace as necessary.
12. Flow down construction only. Remove the lower cage (key 78); reference figure 11 for guidance in performing this
disassembly. The cage contains sensitive guiding surfaces on its inside and outside diameter and care must be taken
during handling. Protect the cage by placing it on clean cloth or wood while the valve is disassembled.
13. Remove all used gaskets and foreign material from the interior of the valve and from the inlet and outlet openings.
Removeanyforeignmaterialthatmaybeinthevalvebodyortrim.Inspectallvalvebodyguidingandsealing
surfaces for any signs of wear.
14. If the valve has been in service, visually inspect the interior of the valve for abnormal wear, erosion, or thermal
fatigue. The gasket surfaces of the valve body and bonnet should be inspected to verify that they are not damaged
and are free of imbedded gasket material. All scratches should be removed by grinding or filing to remove any
interference of the clearance zones between the internal bores and the mating parts. All signs of thermal fatigue
should be carefully evaluated to determine if repair or replacement is necessary. Your local Emerson Service Center
can help determine the severity of damage, if present, and recommend a course of action.
Figure 3. Fisher AF Nozzle Cross Section
A7191-2D
SPRAY HEAD
SWIRL CHAMBER
WATER INJECTION HOLES
(COMPOUND ANGLED ORIFICES)
SPRING
PLUG STEM
SPRING CASING
PIN
TRAVEL MEASUREMENT
SPRAY
ANNULUS
SPRAY PATTERN
Nozzle Maintenance and Replacement
When subjected to normal operating conditions, it is possible that wear, blockage, and/or weld fatigue will occur to
the valve body or nozzle assembly. During regularly scheduled maintenance, visually inspect the nozzles for wear and
blockage. Your local Emerson Service Center can help to determine the extent of weld fatigue and the correct course
of action. Poor performing nozzles or nozzle failure is typically caused by wear, corrosion, erosion, and/or blockage.
The following instruction will help to determine if any of these problems are present and provide a recommended
course of action for each.
Note
For optimal performance, nozzles should be inspected every 18-24 months and replaced every 24-36 months.