Instruction Manual
D102010X012
August 2010
Fisherr EU and EW Valves
NPS 12 through 24 x 20
Contents
Introduction 1...............................
Scope of Manual 1..........................
Description 3...............................
Specifications 4............................
Installation 4................................
Maintenance 6.............................
Packing Lubrication 7.......................
Packing Maintenance 8......................
Replacing Packing 8.......................
Trim Maintenance 11........................
Trim Removal 11..........................
Lapping Seating Surfaces 11................
Valve Plug Maintenance 12.................
Trim Replacement 12......................
Retrofit: Installing Bore Seal Trim 17...........
Replacement of Installed Bore Seal Trim 19....
Trim Removal (Bore Seal Constructions) 19...
Lapping Metal Seats
(Bore Seal Constructions) 20.............
Remachining Metal Seats
(Bore Seal Constructions) 20.............
Trim Replacement
(Bore Seal Constructions) 20.............
Parts Ordering 21............................
Parts List 22................................
EU and EW Series Valves
Introduction
Scope of Manual
This instruction manual includes installation and
maintenance information for NPS 12 through
24 x 20 CL150 through 600 Fisher EUD, EUT,
EUT-2, EWD, EWT, and EWT-2 valves, and the
NPS 16 and 20 x 16 CL900 EUD, EUT2, EWD, and
EWT-2 valves.
(Size designations such as NPS 20 x 16 are
end connection size x nominal trim size.)
Refer to separate manuals for instructions covering
the actuator and accessories.
www.Fisher.com
W9156-1
Figure 1. NPS 24 x 20 Fisher EWT Valve with
Piston Actuator and FIELDVUEt DVC6020
Digital Valve Controller
Do not install, operate, or maintain an EUD, EUT,
EUT-2, EWD, EWT, or EWT-2 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.
Instruction Manual
EU and EW Series Valves
Table 1. Specifications
Valve Sizes
EUT, EUT-2, and EUD: NPS J 12, J 16, and
J 20
EWT, EWT-2, and EWD: NPS J 16x12,
J 20x16, J 24x16, and J 24x20 valves (size
designations are end connection size x nominal
trim size)
End Connection Styles
Flanged: CL150, 300, 600, and 900
(1)
raised-face
or ring-type joint flanges per ASME B16.5
Buttwelding: All ASME B16.25 schedules through
schedule 120 that are compatible with the
ASME B16.34 valve body rating
For other end connections, contact your Emerson
Process Management sales office for details
Maximum Inlet Pressure and Temperature
Flanged: Consistent with CL150, 300, 600, and
(1)
900
pressure/temperature ratings per
(2)
ASME B16.34
Buttwelding: Consistent with CL600 per
ASME B16.34
Also see the Installation section
Shutoff Classifications per ANSI/FCI 70-2 and
IEC 60534-4
EUT, EUT-2, EWT, and EWT-2 with Metal Seats
Standard (for all trims except 2-Stage Cavitrolt
Trim): Class IV
Standard (for 2-Stage Cavitrol Trim): Class V
Optional (for all trims except 2-Stage Cavitrol
Trim): Class V
EUT, EUT-2, EWT, and EWT-2 with Soft Metal
Seats: Class V
1. CL900 end connections are available only for NPS 16 and 20 x 16 EUD, EUT-2, EWD, or EWT-2 valves.
2. Do not exceed the pressure or temperature limits in this manual, on the equipment nameplate, and any applicable code limitations.
Shutoff Classifications per ANSI/FCI 70-2 and
IEC 60534-4 (continued)
EUD and EWD with Metal Seats
Standard: Class III
Optional: Class IV
Flow Characteristics
Standard Cages: J Linear or J equal
percentage
WhisperFlot, Whisper Trimt III, and Cavitrol
III Cages: Linear
Flow Direction
Standard and Cavitrol III Cages: Down
WhisperFlo and Whisper Trim III Cages: Up
Port Diameters
NPS 12 Trim: 279.4 mm (11.00 inches)
NPS 16 Trim: J 374.7 mm (14.75 inches),
J 412.8 mm (16.25 inches) for EUT, EUT-2,
EWT, and EWT-2 valves with Whisper Trim III
cage
NPS 20 Trim: J 463.6 mm (18.25 inches) or
J 502 mm (19.75 inches) for EUT-2 and EWT-2
valves with Whisper Trim III cage
Valve Plug Travel
102 through 432 mm (4 to 17 inches).
Contact your Emerson Process Management
sales office for further details if needed
Yoke Boss and Stem Diameters
J 127 mm (5-inch) or J 127 mm (5H-inch)
diameter yoke boss, each with 31.8 mm
(1-1/4 inch) diameter valve stem
Approximate Weights
See table 6
August 2010
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Instruction Manual
August 2010
Table 2. WhisperFlo Trim Specifications
Trim Material and Selection
J 316 Stainless Steel w/ hardfacing
J 410 Stainless Steel, hardened
J Others per application
Temperature Capability
J EUT and EWT: 73 to 316_C (100 to 600_F)
J EUT-2 and EWT-2: 73 to 232_C
(100 to 450_F)
J EUD and EWD: 29 to 538_C (20 to 1000_F)
J Others per application
Maximum Pressure Drops
As shown in this bulletin. Also see Bulletin
80.3:010 WhisperFlo Aerodynamic Attenuation
Trims
WhisperFlo Aerodynamic Trim Pressure
Ratings
(1,2)
Up to 1500 psi drop
EU and EW Series Valves
Flow Characteristic
Linear (restricted linear cages and special,
characterized cages are available--consult your
Emerson Process Management sales office)
Rangeability
65:1
High rangeability in excess of 250:1 is available in
some constructions. Contact your Emerson
Process Management sales office for details
Flow Direction
Standard: Flow up--through the seat ring and out
through the cage orifices
Velocity Limits
WhisperFlo trim is designed for 0.3 MACH as an
inherent outlet velocity limit. Variations higher and
lower may be applied per special applications consult your Emerson Process Management
sales office
1. Other pressures on application.
2. The pressure/temperature limits in this instruction manual and in any applicable standard limitations should not be exceeded.
Description
Noise Attenuation
Approximately 40 dBA maximum depending on
the nP/P
ratio per IEC 60534-8-3 calculation
1
procedure
EUD and EWD valves have a seat ring bolted into
the valve body with cap screws. Seating is
All valve types covered in this manual (EUD, EUT,
EUT-2, EWD, EWT, and EWT-2 valves) can be used
metal-to-metal. A typical EUD or EWD valve is
shown in figure 8.
for either throttling or on-off control of a wide variety
of liquids and gasses. They are single-port,
globe-style valves with cage guiding, balanced valve
plugs, and a push-down-to-close action. EUT, EWT,
and EWT-2 valves have a spring-loaded PTFE seal
between the plug and cage; the EUD and EWD
valves have two graphite piston rings between the
plug and cage. See figure 6 for seal details.
EUT-2 and EWT-2 valves have a seat ring threaded
into the cage. A spring-loaded PTFE seal is used to
seal between the seat ring and the valve body.
Standard seating is metal-to-metal, but optional soft
metal seats are also available. A typical EUT-2 or
EWT-2 valve is shown in figure 7.
EUT and EWT valves have a seat ring bolted into
the valve body with cap screws. These valves have
metal-to-metal seating and use PEEK anti-extrusion
rings in the plug seal arrangement to increase the
upper temperature limit of the seal to 316_C
(600_F). A typical EUT valve is shown in figure 9.
Cavitrol III, Whisper Trim III, and WhisperFlo trim
cages are available in these valves. Cavitrol trim
helps eliminate cavitation damage in liquid service in
a properly sized valve and Whisper Trim III and
WhisperFlo trim cages help attenuate aerodynamic
noise in gas service.
3
Instruction Manual
EU and EW Series Valves
W6825-1/IL
August 2010
Figure 2. Cutaway Detail of Fisher WhisperFlo Trim, Valve Body Typical
Fisher WhisperFlo trim represents state of the art
solutions for applications that demand ultimate
aerodynamic noise attenuation.
Control valves with WhisperFlo cages (figure 2)
provide additional aerodynamic noise attenuation in
very demanding vapor or gas applications with
high-pressure drops. A WhisperFlo cage with an
appropriately sized valve body is designed to reduce
the noise level up to 40 dBA. For special
applications, 50 dBA attenuation can be achieved.
Specifications
Typical specifications for these valves are shown in
tables 1 and 2. Some of the specifications for a
given valve assembly as it comes from the factory
appear on the actuator nameplate if the valve is part
of a complete control valve assembly.
Installation
WARNING
To avoid personal injury or property
damage resulting from the sudden
release of pressure, do not install the
valve assembly where service
conditions could exceed the limits
given in this manual or on the
appropriate nameplates. Use
pressure-relieving devices as required
by government or accepted industry
codes and good engineering practices.
Always wear protective gloves,
clothing, and eyewear when
performing any installation operations
to avoid personal injury.
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
The valve configuration and
construction materials were selected
to meet particular pressure,
temperature, pressure drop, and
controlled fluid conditions. Because
some valve body/trim material
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Instruction Manual
August 2010
combinations are limited in their
pressure drop and temperature range
capabilities, do not apply any other
conditions to the valve without first
contacting your Emerson Process
Management sales office.
WARNING
If you are hoisting the valve, use nylon
slings to protect the surfaces.
Carefully position the slings to prevent
damage to the actuator tubing and any
accessories. Also, take care to prevent
people from being injured in case the
hoist or rigging slips unexpectedly.
Refer to table 6 for valve assembly
weights. It is important to use
adequately sized hoists and chains or
slings to handle the valve.
1. Before installing the valve, inspect the valve and
associated equipment for any damage and any
foreign material.
2. Make certain that the valve body interior is clean,
that pipelines are free of foreign material, and the
valve is oriented so that pipeline flow is in the same
direction as the arrow on the side of the valve.
CAUTION
For long service life and more effective
operation, the process liquid must be
clean. If the valve being installed has a
Whisper Trim, WhisperFlo, or Cavitrol
Trim cage with small internal flow
passages, impurities or entrained
solids in the process liquid may cause
irreparable erosion damage to the
seating surfaces and may plug cage
holes and passages, causing
cavitation damage. During valve
installation or the plant cleaning cycle,
install a strainer upstream from the
valve to help free pipelines of foreign
material.
3. The control valve assembly may be installed in
any orientation unless limited by seismic criteria.
However, the normal method is with the actuator
vertical above the valve. Other positions may result
in uneven valve plug and cage wear and in improper
EU and EW Series Valves
operation. Support the actuator if it is not installed in
the vertical position. For more information, consult
your Emerson Process Management sales office.
4. Use accepted piping and welding practices when
installing the valve in the line. You can leave internal
elastomeric parts in place when welding. For flanged
valves, use a suitable gasket between the valve and
pipeline flanges.
CAUTION
Depending on valve body materials
used, post weld heat treating might be
required. If so, damage to internal
elastomeric and plastic parts, as well
as internal metal parts is possible.
Shrunk-fit pieces and threaded
connections might also loosen. If post
weld heat treating is to be performed,
all trim parts should be removed.
Contact your Emerson Process
Management sales office for additional
information.
5. With a leak-off bonnet construction, remove
the 1/4 NPT pipe plugs (key 14, figure 5) from the
bonnet to hook up the leak-off piping.
6. If continuous operation of the plant is required
during inspection or maintenance of the valve, install
a three-valve bypass around the control valve
assembly.
7. If the actuator and valve are shipped separately,
refer to the actuator mounting procedure in the
appropriate actuator instruction manual.
WARNING
Personal injury could result from
packing leakage. Valve packing was
tightened before shipment; however
some readjustment will be required to
meet specific service conditions.
If the valve has ENVIRO-SEALt live-loaded packing
or HIGH-SEAL ULF live-loaded packing installed,
this initial re-adjustment will probably not be
required. See the Fisher instruction manuals titled
ENVIRO-SEAL Packing System for Sliding-Stem
Valves (D101642X012) or HIGH-SEAL ULF
Live-Loaded Packing System (D101453X012) (as
appropriate) for packing instructions.
5
Instruction Manual
EU and EW Series Valves
Maintenance
Valve parts are subject to normal wear and must be
inspected and replaced as necessary. Inspection
and maintenance frequency depends on the severity
of service conditions. This section includes
instructions for packing lubrication, packing
maintenance, trim maintenance, lapping seating
surfaces, and valve plug maintenance. All
maintenance operations may be performed with the
valve in the line.
WARNING
Avoid personal injury from sudden
release of process pressure. Before
performing any maintenance
operations:
D Do not remove the actuator from
the valve while the valve is still
pressurized.
D Always wear protective gloves,
clothing, and eyewear when
performing any maintenance
operations to avoid personal injury.
D Disconnect 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.
D Use bypass valves or completely
shut off the process to isolate the
valve from process pressure. Relieve
process pressure on both sides of the
valve. Drain the process media from
both sides of the valve.
D Vent the power actuator loading
pressure and relieve any actuator
spring precompression.
D Use lock-out procedures to be
sure that the above measures stay in
effect while you work on the
equipment.
D The 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.
August 2010
31
LUBRICATOR
31
10A9421-A
AJ5428-D
A0832-2/IL
Figure 3. Lubricator and Lubricator/Isolating Valve
LUBRICATOR/ISOLATING VALVE
D Check with your process or safety
engineer for any additional measures
that must be taken to protect against
process media.
1. Isolate the control valve from the line pressure,
release pressure from both sides of the valve body,
and drain the process media from both sides of the
valve. If using a power actuator, also shut off all
pressure lines to the power actuator, release all
pressure from the actuator, and use lock-out
procedures to prevent injury while you work on the
equipment.
Note
Whenever a gasket seal is disturbed
by removing or shifting gasketed
parts, a new gasket should be installed
upon reassembly. This is necessary to
ensure a good gasket seal because the
used gasket might not seal properly.
Note
If the valve has ENVIRO-SEAL
live-loaded packing or HIGH-SEAL ULF
live-loaded packing installed, see the
Fisher instruction manuals titled
ENVIRO-SEAL Packing System for
Sliding-Stem Valves (D101642X012) or
HIGH-SEAL ULF Live-Loaded Packing
System (D101453X012) (as
appropriate) for packing instructions.
6
Instruction Manual
August 2010
EU and EW Series Valves
B2398/IL
Packing Lubrication
If a lubricator or lubricator/isolating valve (figure 3) is
provided for PTFE/composition or other packings
that require lubrication, it will be installed in place of
the 1/4 NPT pipe plug (key 14, figure 5). Use a
Figure 4. Typical Packing
silicon-base lubricant. To operate the lubricator, turn
the cap screw clockwise to force the lubricant into
the packing box. The lubricator/isolating valve
operates the same way except the isolating valve
must first be opened and then closed after
lubrication is completed.
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Instruction Manual
EU and EW Series Valves
A6060/IL
Figure 4. Typical Packing (Continued)
Packing Maintenance
This procedure does not cover ENVIRO-SEAL or
HIGH-SEAL packing; refer to separate manuals for
instructions on those packing types.
Key numbers are shown in figure 4 unless otherwise
indicated.
For spring-loaded single PTFE V-ring packing, the
spring (key 8) maintains a sealing force on the
packing. If leakage is noted around the packing
follower (key 13), check to be sure the shoulder on
the packing follower is touching the bonnet. If the
shoulder is not touching the bonnet, tighten the
packing flange nuts (key 5, figure 5) until the
shoulder is against the bonnet. If leakage cannot be
stopped in this manner, proceed to the Replacing
Packing section.
If there is undesirable packing leakage with other
than spring-loaded packing, first try to limit the
leakage and establish a stem seal by tightening the
packing flange nuts.
August 2010
any of the following procedures, inspect the valve
stem and packing box wall for nicks and scratches.
Replacing Packing
1. Isolate the control valve from the line pressure,
release pressure from both sides of the valve body,
and drain the process media from both sides of the
valve. If using a power actuator, also shut off all
pressure lines to the power actuator, release all
pressure from the actuator, and use lock-out
procedures to prevent injury while you work on the
equipment.
2. Remove any leak-off piping from the bonnet.
Disconnect the stem connector, and then remove
the actuator from the valve by unscrewing the hex
nuts (key 26, figure 5).
3. Loosen the packing flange nuts (key 5, figure 5)
so that the packing is not tight on the valve stem.
Remove any travel indicator parts and stem locknuts
from the valve stem threads.
CAUTION
If the packing is relatively new and tight on the stem
and if tightening the packing flange nuts does not
stop the leakage, it is possible that the valve stem is
worn or nicked so that a seal cannot be made. The
surface finish of a new valve stem is critical for
making a good packing seal. If the leakage comes
from the outside diameter of the packing, it is
possible that the leakage is caused by nicks or
scratches around the packing box wall. If performing
8
Avoid damage to the seating surfaces
caused by the valve plug and stem
assembly dropping from the bonnet
after being lifted part way out.
When lifting the bonnet (key 1, figure
5), either be sure that the valve plug
and stem assembly remains in the
valve and on the seat or, temporarily
install a valve stem locknut on the
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