Emerson Fisher EWD User manual

www.Fisher.com
Fisher™EWD, EWS, and EWT Valves
through NPS 12x8
Contents
Introduction 1...................................
Scope of Manual 1.............................
Description 3.................................
Specifications 3...............................
Educational Services 4.........................
Installation 4
....................................
Inverted Globe Valve Applications
(Actuator below valve) 6.....................
Maintenance 7
..................................
Packing Lubrication 8..........................
Packing Maintenance 10........................
Replacing Packing 11.......................
Trim Maintenance 14..........................
Trim Removal 15..........................
Lapping Metal Seats 16.....................
Valve Plug Maintenance 17..................
Trim Replacement 19......................
Retrofit: Installing C‐seal Trim 20................
Replacement of Installed C‐seal Trim 24...........
Trim Removal (C‐seal Constructions) 24.......
Lapping Metal Seats (C‐seal Constructions) 25..
Remachining Metal Seats
(C‐seal Constructions) 25.................
Trim Replacement (C‐seal Constructions) 26...
ENVIRO‐SEALtBellows Seal Bonnet 27...........
Parts Ordering 32
................................
Parts Kits 33.....................................
Parts List 36.....................................
Figure 1. Fisher NPS 12x6 EW Series Valve With
667 Actuator
W2777‐2*
Introduction
Scope of Manual
This instruction manual includes installation, maintenance, and parts information for Fisher NPS 4x2 through 12x8
EWD, EWS, and EWT valves (figure 1). Refer to separate manuals for instructions covering the actuator and
accessories.
Do not install, operate, or maintain an EW 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 sales office or Local Business Partner before
proceeding.
Instruction Manual
D100399X012
EW Valve
July 2017

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Table 1. Specifications
End Connection Styles
Flanged Ends: CL300, CL600, or CL900 Raised‐face or
ring‐type joint flanges per ASME B16.5
Buttwelding Ends: Styles per ASME B16.25 schedules
consistent with ASME B16.34 are: Schedules J40 or
J80 for all CL300 and CL600 valves, Schedule J80
or JXXS for NPS 8x6 CL900 valves, or Schedule
J80, J100, or J120 for NPS 12x8 CL900 valves.
Maximum Inlet Pressures, Temperatures, and
Pressure Drops(1)
Consistent with applicable JCL300, JCL600(2), or
JCL900(3) pressure/temperature ratings per ASME
B16.34, but do not exceed the pressure,
temperature, and pressure drop conditions specified
when the valve was ordered. Also see the Installation
section.
Also see Bulletin 80.3:010 WhisperFlotAerodynamic
Attenuation Trims, D102362X012
Shutoff Classifications
See table 2
C‐seal trim: High‐temperature, Class V per ANSI/FCI
70‐2 and IEC 60534‐4
See table 3
WhisperFlo Trim:
JClass IV per ANSI/FCI 70‐2 and IEC 60534‐4
JOthers per application
Flow Characteristics
Standard Cages: JLinear, Jquick opening, or
Jequal percentage
Whisper Trimtand CavitroltCages: Linear
WhisperFlo Trim: Linear (restricted linear cages and
special, characterized cages are available--consult
your Emerson sales office or Local Business Partner)
Flow Directions
EWS and Standard Cage: Normally up
EWD or EWT with Standard Cage: Normally down
Whisper Trim Cages: Always up
Cavitrol Cages: Always down
WhisperFlo Trim: Flow up (standard)—through the
seat ring and out through the cage orifices
Approximate Weights
See table 4
WhisperFlo Trim Material and Selection
J410 Stainless Steel
JOthers per application
See appropriate valve body bulletin
WhisperFlo Pressure/Temperature Capability
J-29 to 427_C (-20 to 800_F)
JOthers per application
See appropriate valve body bulletin for
complementary information
WhisperFlo Aerodynamic Trim Pressure Ratings(1,2)
Up to 1500 psi drop
WhisperFlo 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
WhisperFlo Rangeability
100:1
WhisperFlo Noise Attenuation
Approximately -40 dBA maximum depending on the
nP/P1ratio per IEC 534‐8‐3 calculation procedure
See Fisher Specification Manager
Additional Specifications
For specifications such as materials, port diameters,
valve plug travels, yoke boss diameters, and stem
diameters, refer to the Parts List
1. The pressure or temperature limits in this manual and any applicable standard limitations should not be exceeded.
2. Certain bonnet bolting material selections may require a CL600 easy‐e valve assembly to be derated. Contact your Emerson sales office.
3. There are two different CL900 NPS 8x6 valve bodies, one for use only with Cavitrol III cages and the other for use with all other constructions. A CL900 valve with Cavitrol III cage can take full
CL900 pressure drops. For information on other NPS 8x6 constructions that can take full CL900 pressure drops, contact your Emerson sales office. All other trim constructions are limited to
CL600 pressure/temperature limits even though installed in a CL900 valve.

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Figure 2. Cutaway Detail of the Fisher WhisperFlo Trim, Valve Body Typical
W6825‐1
Description
These single‐port globe‐style valves have cage guiding, clamped seat rings, and push‐down‐to‐close valve plug action.
Valve configurations are as follows:
EWD: Balanced valve plug with metal‐to‐metal seating for all general applications over a wide range of pressure drops
and temperatures.
C‐seal trim is available for EWD valves, CL300 and CL600, in sizes NPS 6x4x2‐1/2, 6x4, 8x4, 8x6, 12x6, 10x8, and 12x8.
With C‐seal trim, a balanced valve can achieve high‐temperature, Class V shutoff. Because the C‐seal plug seal is
formed from metal (N07718 nickel alloy) rather than an elastomer, a valve equipped with the C‐seal trim can be
applied in processes with a fluid temperature of up to 593_C (1100_F), provided other material limits are not
exceeded.
EWS: Unbalanced valve plug with metal‐to‐metal or optional metal‐to‐PTFE seating for all general applications
requiring better shutoff capabilities than can be obtained with the EWD valve.
EWT: Balanced valve plug with either metal‐to‐PTFE seating (standard for all except Cavitrol III cages) for stringent
shutoff requirements or metal‐to‐metal seating (standard for Cavitrol III cages, optional for all others) for higher
temperatures.
Control valves with WhisperFlo cages (figure 2) provide additional attenuation for aerodynamic noise 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 table 1.

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Table 2. Shutoff Classification Per ANSI/FCI 70‐2 and IEC 60534‐4
Valve Seating Shutoff Class
EWD Metal II (standard)
III (optional for NPS 6x4 through 12x6 valves with optional single graphite piston ring or for
NPS 10x8 and 12x8 valves with optional double piston rings)
IV (optional for NPS 6x4 through 12x8 valves with optional multiple graphite piston rings)
EWS Metal IV (standard)
V (optional, consult your Emerson sales office or Local Business Partner)
EWS PTFE VI
EWT with all except
Cavitrol III cages
PTFE Standard Air Test (maximum leakage is 0.05 mL/min/psid/inch port diameter)
V (optional)
Metal IV (standard)
Metal V (optional)(1)
EWT with
1‐stage Cavitrol III cage
Metal IV (standard)
V (optional)
EWT with 2‐stage Cavitrol III cage Metal V
1. Class V shutoff for EWT requires spring loaded seal ring, radius‐seat plug, wide‐bevel seat ring, and seat lapping. Not available with 8‐inch port, quick‐opening cage. Not available with
S31600 (316 SST) valve plug and seat ring.
Table 3. Additional Shutoff Classification for C‐seal Trim Per ANSI/FCI 70‐2 and IEC 60534‐4
Valve Valve Size, NPS Port Diameter, Inches Cage Style Leakage Class
EWD
(CL300, CL600)
6x4x2‐1/2 2.875 Equal Percentage, Linear, Whisper I,
Cavitrol III (2‐stage)
V (for port
diameters from 2.875
through 8‐inch with
optional C‐seal trim)
6x4
8x4 4.375 Equal Percentage, Linear, Whisper I, Cavitrol III (1‐stage)
8x6 and 12x6 5.375 Whisper III (A3, B3, D3, D3), Cavitrol III (2‐stage)
8x6
12x6 7Equal Percentage, Linear, Whisper I, Cavitrol III (1‐stage)
10x8
12x8 8Equal Percentage, Linear, Whisper I, Cavitrol III (1‐stage)
Educational Services
For information on available courses for the Fisher EW valve, as well as a variety of other products, contact:
Emerson Automation Solutions
Educational Services - Registration
Phone: [phone] or 1-800-338-8158
E-mail: [email protected]
emerson.com/fishervalvetraining
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 or bursting of parts may result if the valve
assembly is installed where service conditions could exceed the limits given in table 1 or on the appropriate nameplates. To
avoid such injury or damage, provide a relief valve for overpressure protection as required by government or accepted
industry codes and good engineering practices.

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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
When ordered, the valve configuration and construction materials were selected to meet particular pressure, temperature,
pressure drop and controlled fluid conditions. Responsibility for the safety of process media and compatibility of valve
materials with process media rests solely with the purchaser and end‐user. Since some body/trim material combinations
are limited in their pressure drop and temperature ranges, do not apply any other conditions to the valve without first
contacting your Emerson sales office or Local Business Partner.
Before installing the valve, inspect the valve and pipelines for any damage and any foreign material which may cause
product damage.
Table 4. Approximate Weights
END CONNECTION
VALVE SIZE, NPS
4X2 6X4 8X4 8X6 10X8 12X6 12X8
Kg Lb Kg Lb Kg Lb Kg Lb Kg Lb Kg Lb Kg Lb
CL300 (flanged only) 84 185 150 330 234 515 284 625 567 1250 500 1102 653 1440
CL600 Flanged 100 220 195 430 272 600 308 680 744 1640 721 1590 857 1890
Buttwelding 61 135 122 270 177 390 272 600 512 1130 526 1160 658 1450
CL900 Flanged ‐ ‐ ‐ ‐ ‐ ‐ ‐ ‐ ‐ ‐ ‐ ‐ ‐ ‐ ‐ ‐ ‐ ‐ 612 1350 ‐ ‐ ‐ ‐ ‐ ‐ ‐ ‐ ‐ ‐ ‐ ‐ 1361 3000
Buttwelding ‐ ‐ ‐ ‐ ‐ ‐ ‐ ‐ ‐ ‐ ‐ ‐ ‐ ‐ ‐ ‐ ‐ ‐ 454 1000 ‐ ‐ ‐ ‐ ‐ ‐ ‐ ‐ ‐ ‐ ‐ ‐ 1293 2850
CAUTION
If hoisting the valve, use a nylon sling to protect the surfaces. Carefully position the sling 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 4 for valve assembly weights. Be sure to use adequately sized hoists and chains or slings to
handle the valve.
1. Before installing the valve, inspect the valve body cavity and associated equipment for any damage and any foreign
material.
2. Make certain the valve body interior is clean, that pipelines are free of foreign material, and that the valve is
oriented so that pipeline flow is in the same direction as the arrow on the side of the valve.
3. Install the control valve assembly 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 operation. With some valves, the actuator may also need to be supported when it is not vertical. For more
information, consult your Emerson sales office or Local Business Partner.
Note
If installing a valve with small internal flow passages, such as with WhisperFlo, Whisper Trim, or Cavitrol cages, consider installing
an upstream strainer to prevent the lodging of particles in these passages. This is especially important if the pipeline cannot be
thoroughly cleaned or if the flowing medium is not clean.

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4. Use accepted piping and welding practices when installing the valve in the line. For flanged valve bodies, use a
suitable gasket between the valve body and pipeline flanges.
CAUTION
Depending on valve body materials used, post weld heat treating may be required. If so, damage to internal elastomeric
and plastic parts, as well as internal metal parts is possible. Shrink‐fit pieces and threaded connections may also loosen. In
general, if post weld heat treating is to be performed, remove all trim parts. Contact your Emerson sales office or Local
Business Partner for additional information.
5. With a leak‐off bonnet construction, remove the pipe plugs (keys 14 and 16, figure 21) from the bonnet to hook up
the leak‐off piping. If continuous operation is required during inspection or maintenance, install a three‐valve
bypass around the control valve assembly.
6. 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, the packing
might require some readjustment to meet specific service conditions. Check with your process or safety engineer for any
additional measures that must be taken to protect against process media.
Valves with ENVIRO‐SEAL live‐loaded packing or HIGH‐SEAL live‐loaded packing will not require this initial
re‐adjustment. See Fisher instruction manuals, ENVIRO‐SEAL Packing System for Sliding‐Stem Valves, D101642X012,
or HIGH‐SEAL Live‐Loaded Packing System, D101453X012, (as appropriate), for packing instructions. If you wish to
convert your present packing arrangement to ENVIRO‐SEAL packing, refer to the retrofit kits listed in the parts kit
sub‐section near the end of this manual.
Inverted Globe Valve Applications (Actuator below valve)
Due to space restrictions in your application, you may be required to mount the valve/actuator assembly in an inverted
orientation, with the actuator positioned below the valve. If so, the following procedures will help you with
disassembly and assembly techniques.
WARNING
Avoid personal injury or property damage caused by components dropping.
With the valve/actuator upside down, components may drop during disassembly or assembly. Be careful not to position
yourself below the valve in the path of falling parts.
As the bonnet/plug/cage is lowered from the valve body, the center of gravity will be above the lifting points. Take care to
prevent the assembly from tipping over as it is lowered. Either leave the actuator attached to the plug and bonnet, attach
straps to the stem, or provide other means to prevent tipping.
Disassembly
1. Provide adequate support to the actuator while removing it from the bonnet.

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2. Provide adequate support to the bonnet while removing the bonnet nuts.
3. Be aware that the bonnet/plug/cage may tip over as they are lowered from the valve body. Make provision to
prevent tipping.
4. Be aware that the cage and seat ring may not come out with the bonnet and plug/stem assembly. If this occurs,
make provision to support these parts, as they may fall out unexpectedly.
Assembly
1. Start this assembly procedure with the plug/stem assembly already installed in the bonnet.
2. Put the gaskets and cage onto the bonnet and plug.
3. Place the seat ring with the seat ring gasket onto the cage, if applicable with the valve design.
4. Raise this bonnet/plug/cage assembly up into the valve body. Make provision to prevent tipping of these parts as
they are being raised into the valve body.
5. Torque the bonnet nuts.
6. Mount the actuator.
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 metal seats, and ENVIRO‐SEAL bellows seal bonnet replacement. All
maintenance operations may be performed with the valve in the line.
WARNING
Avoid personal injury or property damage 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 pneumatic 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.
D Check with your process or safety engineer for any additional measures that must be taken to protect against process
media.
CAUTION
Follow instructions carefully to avoid damaging the product surfaces, which could result in damage to the product.

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Note
Whenever a gasket seal is disturbed by removing or shifting gasketed parts, install a new gasket upon reassembly. This is necessary
to ensure a good gasket seal because the used gasket may not seal properly.
Figure 3. Lubricator and Lubricator/Isolating Valve (optional)
LUBRICATOR
LUBRICATOR/ISOLATING VALVE
10A9421‐A
AJ5428‐D
A0832‐2
Packing Lubrication
CAUTION
Do not lubricate graphite packing. Graphite packing is self-lubricated. Additional lubrication may result in slip-stick
movement of the valve.
Note
ENVIRO‐SEAL or HIGH‐SEAL packing does not require lubrication.
WARNING
To avoid personal injury or property damage resulting from fire or explosion, do not lubricate packing used in oxygen
service or in processes with temperatures over 260_C (500_F).
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 pipe plug (key 14, figure 21). Use a good quality silicon‐base lubricant. Do
not lubricate packing used in oxygen service or in processes with temperatures over 260_C (500_F). To operate the
lubricator, simply turn the cap screw clockwise to force the lubricant into the packing box. The lubricator/isolating
valve operates the same way, except open the isolating valve before turning the cap screw and then close the isolating
valve after lubrication is completed.

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Figure 4. PTFE V‐Ring Packing Arrangements
UPPER WIPER
(KEY 12)
PACKING
FOLLOWER
(KEY 13)
WASHER
(KEY 10)
SPRING
(KEY 8)
PACKING BOX
RING (KEY 11)
FEMALE
ADAPTOR
PACKING RING
MALE
ADAPTOR
LOWER WIPER
FEMALE
ADAPTOR
PACKING RING
MALE
ADAPTOR
LOWER WIPER
UPPER WIPER
(KEY 12)
PACKING
FOLLOWER
(KEY 13)
SPACER
(KEY 8)
PACKING BOX
RING (KEY 11)
1
1
FOR S31600 (316 SST) OR
S17400 (17‐4PH SST)
METAL PACKING BOX PARTS
FOR ALL OTHER METAL PACKING
BOX PART MATERIALS
SINGLE ARRANGEMENTS
NOTE:
PACKING SET (KEY 6) (2 REQ'D FOR DOUBLE ARRANGEMENTS).
12A7837−A/IL
B2398
1
1
1
1
1
1
1
UPPER WIPER
(KEY 12)
PACKING
FOLLOWER (KEY 13)
LANTERN RING
(KEY 8)
PACKING BOX
RING (KEY 11)
MALE ADAPTOR
PACKING RING
FEMALE ADAPTOR
LOWER WIPER
ASSEMBLY 1
(POSITIVE
PRESSURES)
ASSEMBLY 2
(VACUUM) ASSEMBLY 3 (POSITIVE
PRESSURES
& VACUUM)
ASSEMBLY 1
(POSITIVE
PRESSURES)
ASSEMBLY 2
(VACUUM) ASSEMBLY 3 (POSITIVE
PRESSURES
& VACUUM)
ASSEMBLY 1
(POSITIVE
PRESSURES)
ASSEMBLY 2
(VACUUM) ASSEMBLY 3 (POSITIVE
PRESSURES
& VACUUM)
9.5 mm (3/8 INCH) STEM 12.7 mm (1/2 INCH) STEM 19.1, 25.4, OR 31.8 mm
(3/4, 1, OR 1‐1/4 INCH) STEM
DOUBLE ARRANGEMENTS
12A8187-C 12A7814-C 12A7839-A
B1428‐2

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Packing Maintenance
Note
For valves with ENVIRO‐SEAL live‐loaded packing, see the Fisher instruction manual, ENVIRO‐SEAL Packing System for Sliding‐Stem
Valves, D101642X012, for packing instructions. For valves with HIGH‐SEAL live‐loaded packing, see the Fisher instruction manual,
HIGH‐SEAL Live‐Loaded Packing System, D101453X012, for packing instructions.
Key numbers refer to figure 4 for PTFE V‐ring packing and to figure 5 for PTFE/composition packing, unless otherwise
indicated.
For spring‐loaded single PTFE V‐ring packing, the spring (key 8, figure 4) maintains a sealing force on the packing. If
leakage is noted around the packing follower (key 13, figure 4), 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 21)
until the shoulder is against the bonnet. If leakage cannot be stopped in this manner, go to the Replacing Packing
procedure.
Figure 5. Detail of PTFE/Composition Packing Arrangements
UPPER WIPER
(KEY 12)
PACKING
FOLLOWER
(KEY 13)
LANTERN RING
(KEY 8)
PACKING BOX
RING (KEY 11)
PACKING RING
(KEY 7)
9.5 mm
(3/8 INCH)
STEM
12.7 mm
(1/2 INCH)
STEM
19.1, 25.4, OR
31.8 mm
(3/4, 1, OR
1‐1/4 INCH) STEM
TYPICAL (DOUBLE) ARRANGEMENTS
12A8188‐A
12A7815‐A
12A8173‐A
A2619‐1
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.
If the packing is relatively new and tight on the stem and if tightening the packing flange nuts does not stop the
leakage, the valve stem may be 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, the leakage
may be caused by nicks or scratches around the packing box wall. If performing any of the following procedures,
inspect the valve stem and packing box wall for nicks and scratches.
Replacing Packing
WARNING
Avoid personal injury or property damage from sudden release of process pressure. Before performing any maintenance
operations: