Emerson Fisher easy-e EW Data Sheet
Product Bulletin
EW Valve
D100023X012
51.1:EW
August 2012
Fisherr EW Series (EWD/EWS/EWT)
Sliding-Stem Control Valves through NPS 12x8
Fisher EW Series easy-et valves (figures 1, 2, 3, and 4)
feature large internal cavities with expanded end
connections and a variety of unbalanced and balanced
plug designs. Sizes available from NPS 4x2
12x8. These combinations provide good fluid control
in economical, high-capacity valve bodies that keep
valve outlet velocities within practical limits.
These valves meet a variety of service requirements,
such as power plants where oversized piping is used to
limit fluid flow velocity. They also perform well in noise
abatement applications; for example, high-pressure
gasreducingstationswheresonicvelocitiesareoften
encountered at the outlet of conventional valve
bodies.
(1)
through
The Fisher EW product line is available for a wide range
of applications, including sulfide and chloride
stress-cracking environments common to the oil and
gas production industries. To discuss available
constructions, contact your Emerson Process
Management sales office and include the applicable
codes and standards required for these environments.
The easy-e Valve Family
EW Series valves are part of the versatile easy-efamily
of Fisher industrial control valves. easy-evalvesshare
the following characteristics:
Multiple trim material choices
Trim temperature capability with metal seats
standard to 427_C(800_F)
Interchangeable, restricted-capacity trims and
full-size trims to match variable process flow
demands
W2777-3
Different cage/plug styles that provide particular
flow characteristics for highly-specialized
applications. The standard cage comes in three
different flow characteristics:
D quick-opening
D linear
D equal percentage
Cavitrolt III cages are available to eliminate
cavitation damage and Whisper Trimt III cages are
available to help attenuate aerodynamic noise.
316 stainless steel packing box parts are standard
(including packing flange, studs, and nuts)
The temperature limits of EWT valves can be extended
above 232_C(450_F) by using PEEK
www.Fisher.com
Product Bulletin
51.1:EW
August 2012
EW Valve
D100023X012
(PolyEtherEtherKetone) anti-extrusion rings in
combination with a spring-loaded PTFE seal. The PEEK
anti-extrusion rings expand to close off the clearance
gapbetweentheplugandthecagewherethePTFE
seal may extrude at high temperatures and pressures.
The temperature limits are extended to 316_C (600_F)
for non-oxidizing service and to 260_C(500_F) for
oxidizing service.
Note
Refer to Fisher bulletin 51.1:EWN (D100024X012) for
information on EWN Series valves with Whisper Trim III
cages.
Note
Refer to Fisher bulletin 80.3:010 (D102362X012) for
information on WhisperFlot Aerodynamic Noise
Attenuation Trim.
Features
Compliance with the Clean Air Act– ENVIRO-SEAL™
packing systems provide an improved stem seal to
help prevent the loss of valuable or hazardous
process fluid. The ENVIRO-SEAL packing systems
featurePTFEorGraphiteULFpackingwith
live-loading for reduced packing maintenance.
Piping Economy–Expanded end connections of EW
Series valve bodies may reduce the need for line
swages while accommodating oversized piping
arrangements used to limit fluid flow velocities.
Temperature C ompensation–On designs with the
seat ring threaded into the valve body (figure 4), the
hung cage feature helps reduce gasketing problems
caused by thermal expansion and contraction of
long parts, such as the cage assembly.
Standard Trim Parts across the easy-e product
line–Included are FGM gaskets, packing flange,
studs, and nuts.
High-Temperature, Class IV or Class V
Shutoff–Optional multiple piston rings (figure 14)
for EWD and EWD-1 valve bodies permit Class IV
shutoff up to 593_C (1100_F).
Use of C-seal trim for EWD (see figure 5) permits
Class V shutoff up to 593_C (1100_F).
Increased Pressure/Temperature Ratings–NPS 12x8
CL900 EW Series valve bodies with buttwelding end
connections are capable of increased ASME ratings
called Intermediate Standard Ratings. The extra
strength of the valve body allows these valves to be
used where pressures and temperatures exceed
Standard Class ratings in ASME B16.34.
See Bulletin 59.1:027, Increased Pressure/
Temperature Ratings for EH and EW Series Steel
Valves (D100076X012), for further information.
Noise Attenuation–In an EW Series valve, noise
produced by high flow rates and large pressure
drops can be reduced by up to 18 dbA with a
Whisper Trim I cage, by up to 30 dbA with a Whisper
Trim III cage, and by up to 40 dbA with a WhisperFlo
cage.
Table of Contents
Features 2.....................................
Specifications 3................................
C-seal Trim Description 6........................
ENVIRO-SEAL and HIGH-SEAL Packing Systems 6.....
Available Configurations 10......................
2
Sour Service Capability– Unless otherwise noted,
references are to NACE MR0175-2002. Optional
materials are available to meet NACE MR0103 and
NACE MR0175 / ISO 15156. Material requirements
under these standards vary by edition and year of
issue; the specific standard must be specified.
Material Selection Guidelines 10..................
ANSI/FCI Class VI Shutoff Capabilities 12............
Fisher TSO (Tight Shutoff) Trim Capabilities 13......
Installation 13.................................
Dimensions 29.................................
EW Valve
D100023X012
Specifications
Product Bulletin
51.1:EW
August 2012
Valve Body Configurations
See Available Configurations section
Valve Body Sizes
See table 2
End Connection Styles
Flanged:
ring-type joint flanges per ASME B16.5,
J CL150, 300, 600, and 900 raised-face or
J raised-face
per EN 1092-1/B
Buttwelding: Styles per ASME B16.25 schedules that
are consistent with ASME B16.34 are Schedule
or
J 80 for all CL300 and 600 valves, Schedule J 80
or
J XXS for NPS 8x6 CL900 valves, or Schedule
J 80, J 100, or J 120 for NPS 12x8 CL900 valves
Maximum Inlet Pressures and Temperatures
Consistent with applicable J CL300, J 600
J 900 pressure/temperature ratings per
(2)
J 40
(1)
,or
ASME B16.34 unless limited as follows:
Valves With All Except Cavitrol III or Whisper Trim I II
Cages: Where limited by individual
pressure/temperature capabilities in figure 8 or 9 or
temperature capabilities in table 11, 12, 13, or 20.
Valves With Cavitrol III Cages: Where limited by
individual pressure/temperature capabilities in figure
12 or temperature capabilities in table 16 or 20
Valves With Whisper Trim III Cages: Where limited by
individual pressure/temperature capabilities in figure
15, 16, or 17 or temperature capabilities in table 18
or 20
Shutoff Classifications Per ANSI/FCI 70-2andIEC
60534-4
See tables 3 and 4
Construction Materials
Valve, Bonnet, and Bonnet Spacer If Used:
carbon steel,
moly steel,
J LCC carbon steel, J WC9 chrome
J CF8M (316 SST), J other materials
J WCC
upon request
Valve Plug, Cage, and Metal Seating Parts
Valves With All Except Cavitrol III or Whisper Trim III
Cages: See table 5 or 14
Valves With Cavitrol III Cages: See table 15
Valves With Whisper Trim III Cages: See table 17, 18, or
19
All Other Parts: See table 20
Material Temperature Capabilities
(1)
Valve Body/Trim Combinations
Valves With All Except Cavitrol III or Whisper Trim III
Cages: Seefigure8or9andtable11,12,or13
Valves With Cavitrol III Cages: Seefigure12andtable
16
Valves With Whisper Trim III Cages: Seefigure15,16,or
17 and table 18
All Other Parts: See table 20
Flow Characteristics
Standard Ca ges:
J equal percentage
J Quick-opening, J linear, or
Cavitrol and Whisper Trim Cages: Linear
Maximum Pressure Drops
(1, 3)
Same as maximum inlet pressure for specific
construction defined above, except where further
limited as follows:
Valves With All Except Cavitrol III or Whisper Trim I II
Cages: Seefigure8or9
Valves With Cavitrol III Cages: Seefigure12
Valves With Whisper Trim III Cages: Seefigure15,16,
or 17, except where further restricted by the
following max nP/P1 ratio –
J 0.75 for level B cages, J 0.85 for level C cages, or
J 0.99 for level D cages
J 0.60 for level A cages,
(4)
- continued -
Flow Directions
Valves with Standard Cages
EWD, EWD
EWS and EWS-1: Normally up
Valves with Cavitrol Cages: Always down
-
1, EWT, and EWT-1: Normally down
(6)
(5)
Valves with Whisper Trim III Cages: Always up
(5)
(6)
Flow Coefficients and Noise Level Prediction
Refer to Fisher Catalog 12
Port Diameters and Maximum Valve Plug Travels
See table 21
3
Product Bulletin
51.1:EW
August 2012
Specifications (continued)
EW Valve
D100023X012
Yoke Boss and Stem Diameters
See table 21
Options
J Lubricator, J lubricator/isolating valve, J drilled
and tapped connection in extension bonnet for
Typical Bonnet Styles (see table 23)
J Plain, J style 1 cast extension, J style 2 cast
extension,
J ENVIRO-SEAL bellows seal bonnet
Packing Arrangements
J Standard PTFE, J Double PTFE, J Graphite,
J ENVIRO-SEAL PTFE, J ENVIRO-SEAL Duplex,
J ENVIRO-SEAL Graphite ULF, J HIGH-SEAL
Approximate Weights
See table 22
1. The pressure/temperaturelimits in this bulletinand any applicable standard or code limitationshould not be exceeded.
2. Certain bonnet boltingmaterialselections may require a CL600 easy-e valve assembly to be derated. Contact yourEmerson Process Management sales officefor more information.
3. Only NPS 12x8CL900valve bodies with threaded (-1) seat rings cantakefull CL900 pressure drops; CL900 valve bodieswith clamped (no dash number) seat rings arelimitedto CL600
pressure drops. Also,there are two different NPS 8x6CL900valve bodies, one for use onlywith Cavitrol III cagesand the other for use with all other constructions.An NPS8x6CL900 valve body
with Cavitrol III cage can take full CL900 pressure drops. For information on other NPS 8x6 constructions that can take full CL900 pressure drops,contactyour Emerson Process Management
sales office. All otherNPS 8x6 constructions are limited to CL600 pressure drops (1440 psid flowing drop) even though installed in a CL900 valve body.
4. Restriction based on excessive noiseifmax nP/P1 ratio for a given cage level is exceeded.
5. Down:in through cage and outthrough seat ring (direction shown in figure 1).
6. Up:in through seatring and out through cage as shown in figure13.
leak-off service,
J valve body drain plug,
J ENVIRO-SEAL bellows seal bonnet for positive stem
sealing of hard-to-handle fluids at temperatures up to
566_C (1000_F),
J style 3 fabricated extension
bonnet made on order to a specific length for
cryogenic service,
J special seismic service bonnet,
J packings suitable for nuclear service, and J forged
bonnet for 5 in. (127 mm) yoke boss on NPS 8x6
CL900 valve,
(450_F) using PEEK anti-extrusion rings
J Class V shutoff for EWT above 232_C
J Class V
shutoff for EWD up to 593_C (1100_F) using C-seal
trim
ENVIRO-SEAL Packing System Specifications
Applicable Stem Diameters
J 19.1 (3/4), J 25.4 (1), and J 31.8 (1-1/4)
diameter valve stems
Maximum Pressure/Temperature Limits
To Meet the EP A Fugitive Emission Standard of 100
(2)
PPM
(1)
For ENVIRO-SEAL PTFE and ENVIRO-SEAL Duplex packing
systems: full CL300 up to 232_C(450_F)
For ENVIRO
-
SEAL Graphite ULF packing system: 1500
psig (104 bar) at 316_C(600_F)
Construction Materials
PTFE Packing Systems:
Packing Ring and Lower Wiper: PTFE V-ring
(3)
V-ring
Graphite ULF Packing Systems: Graphite rings
Anti-Extrusion Washer: Filled PTFE (not required for
graphite packing)
Lantern R ing: S31600 (316 stainless steel) (not
required for graphite packing)
Packing Box Flange: S31600
Spring:
J 17-7PH stainless steel, J N06600, or
J S17700
Packing Follower: S31600 lined with carbon-filled
PTFE
Packing Box Studs: Strain-hardened 316 stainless
steel
Packing Box Nuts: 316 stainless steel SA194 Grade
8M
Male and Female Adaptor Rings: Carbon-filled PTFE
1. Refer to the valvespecifications in this bulletin for pressure/temperature limits of valveparts. Do not exceed the pressure/temperature rating of the valve. Do n o t exceed any applicable code
or standard limitation.
2. The Environmental ProtectionAgency (EPA) has set a limit of 100 partspermillion (ppm) for fugitive emissionsfroma valve in selected VOC (VolatileOrganic Compound)services.
3. In vacuum service,it is not necessary to reverse the ENVIRO-SEAL PTFEpackingrings.
4
EW Valve
)
D100023X012
Figure 1. Fisher EWD Valve with Standard Cage
PTFE V-RING
BONNET
GASKET
SHIM
SPIRAL
WOUND
GASKET
PIN
PACKING
GRAPHITE PISTON
RING
CAGE
SEAT
RING
VALVE
PLUG
Product Bulletin
51.1:EW
August 2012
LOAD RING
CAGE
RETAINER
SEAT
RING
W9035
GASKET
TYPICAL OF CONSTRUCTIONS THROUGH NPS 12x6
NOTE:
THE NPS 10x8 VALVE IS SIMILARINAPPEARANCE TO SIZES THROUGH NPS 12x6. HOWEVER, THE NPS 10x8 USESTHELOADRINGSHOWN FOR THE NPS 12x8.
ITDOESNOTUSETHECAGERETAINER.
Figure 2. Fisher EWT Trim Details
SOFT BACKUP
RING
SEAL
RING
W9036
RETAINING
RING
NPS 12x8 CONSTRUCTION
SEAL RING
(SHOWN POSITIONED
FOR USE WITH
STANDARD AND
CAVITROL CAGES)
METAL
BACKUP
RING
W2914--1/ IL
178 mm (7 INCH)
AND LARGER PORTS
METAL
DISC SEAT
W0992-3
PTFE
DISC
METAL DISC
RETAINER
STANDARD CONSTRUCTION
(SEAT PARTS ALSO TYPICAL OF OPTIONAL
EWS PTFE SEATING
W0995-2
137 mm (5.375 INCH)
AND SMALLER PORTS
SEAL RING
(SHOWN POSITIONED
FOR USE WITH
STANDARD AND
CAVITROL CAGES)
VALVE PLUG WITH OPTIONAL
PRESSURE- ASSISTED SEAL RING
5
Product Bulletin
51.1:EW
August 2012
EW Valve
D100023X012
Figure 3. Fisher EWS Trim Details Showing Standard
Cage and Seating Construction
W0989-2
CLAMPED METAL
SEAT RING
C-seal Trim Description
C-seal trim (figure 5) is available for valves with port
diameters from 2.875 inches through 8 inches.
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).
ENVIRO-SEAL and
HIGH-SEAL Packing
Systems
Fisher ENVIRO-SEAL and HIGH-SEAL packing systems
(figure 18) offer excellent sealing capabilities. These
systems easily install in your existing valves or can be
purchased with new valves. These systems help you
seal your process to conserve valuable process fluid
and to protect the environment against the emission
of hazardous or polluting fluids. The long-life and
reliability of these systems also reduce your
maintenance cost and downtime.
For applications requiring compliance with
environmental protection regulations, the unique
ENVIRO-SEAL packing system and, for hazardous
service, the ENVIRO-SEAL bellows seal bonnet (figure
19) are offered. The emission control packing system
or seal bonnet keeps emission concentrations below
the EPA 100 ppm requirement.
For an excellent stem seal in applications that are not
environmentally-sensitive, the HIGH-SEAL Graphite
ULF packing system is offered. The HIGH-SEAL packing
system provides excellent sealing at
pressure/temperature ratings beyond ENVIRO-SEAL
limits.
ENVIRO-SEAL packing systems, available with PTFE,
Graphite ULF, or Duplex packing, and the HIGH-SEAL
Graphite ULF packing system feature live-loading and
unique packing-ring arrangements for long-term,
consistent sealing performance.
6
EW Valve
D100023X012
Figure 4. Fisher NPS 12x8 CL900 EWT-1 Valve
SEAL RING
(SHOWN
POSITIONED
FOR USE
WITH
STANDARD
CAGES)
Product Bulletin
51.1:EW
August 2012
W9037
THREADED
SEAT RING
7
Product Bulletin
51.1:EW
August 2012
EW Valve
D100023X012
Figure 5. C-seal Trim
A6869
NOTES:
1. REVERSE THE ORIENTATION OF THE C-SEAL PLUG SEAL FOR PROPER S HUTOFF WHEN
VALVEISUSEDINAPROCESSWITHDIFFERENTFLUIDFLOWDIRECTION.
PISTON
RING
RETAINER
C-SEAL
METAL
PLUG
(1)
SEAL
STAKETHREAD
FLOW DOWN
C-SEAL
METAL
PLUG
(1)
SEAL
VALVE
PLUG
FLOW UP
Figure 6. Typical Balanced TSO Trim
A7096
8
VALVE PLUG
SEAL
PROTECTED SOFT SEAT
Product Bulletin
EW Valve
D100023X012
Table 1. Metal Trim Part Materials for Compatibility with NACE MR0175-2002 (Sour Service) Specifications,
Environmental Restrictions Apply, Refer to Standard
Disk Seat and
Retainer for
Optional
PTFE-Seat
Construction
Valve Stem, Packing
Follower, Lantern Ring,
Packing Box Ring, and
Pin
S20910 (Valve Stem)
S31600 (All Other Parts)
Trim Designation Valve Plug Cage
85
(3)
S31600
S31600 with
electroless nickel
coating (ENC)
85C
(2,3)
S31600
S31600 with
electroless nickel
coating (ENC)
S31600 with seat
86
(3)
hard faced with
CoCr-A hardfacing
alloy
S31600 with seat
87
and guide hard
faced with CoCr-A
hardfacing alloy
S31600 with seat
87C
(2)
and guide hard
faced with CoCr-A
hardfacing alloy
1. NPS 10x8 and 12x8valve body only.
2. 85C and 87C aretrimsfor PTFE-seat constructions in EWS and EWT valves.
3. Not for usewith Whisper Trim Iwith5-3/8inchandlargerports.
S31600 with
electroless nickel
coating (ENC)
S31600 with
electroless nickel
coating (ENC)
S31600 with
electroless nickel
coating (ENC)
Seat Ring
for Standard
Metal Seat
Construction
S31600 ---
--- S31600
R30006 (alloy 6) ---
R30006 (alloy 6) ---
--- S31600
August 2012
51.1:EW
Load Ring
N05500
(1)
Figure 7. Typical Trim for NACE MR0175-2002 (Sour Service) (tables 11, 12, and 13 should be used along with these
graphs to determine specific limits based on valve size and trim selection)
FLUID TEMPERATURE, C
--100 --50 0 50 100 150 200 250
1600
1400
1200
1000
800
600
400
PRESSURE DROP, PSI
200
0
--200 --100
A3115-3
NOTES:
1
2
DO NOT EXCEED THE MAXIMUM PRESSURE AND TEMPERATURE FOR THE CLASS RATING OF THE BODY MATERIAL USED, EVEN THOUGH THE TRIMS SHOWN MAY
HAVE HIGHER CAPABILITIES.
3
USE TRIM 85 UP TO 99 BAR (1440 PSI) WITH CLEAN DRY GAS. FOR PROCESS FLUIDS OTHER THAN CLEAN DRY GAS, USE TRIM 85 ONLY UP TO 21 BAR (300 PSI).
4
TRIM 87 TEMPERATURE LIMIT CAN BE EXTENDED ABOVE 232C (450F) IF PEEK ANTI-EXTRUSION RINGS AND SPRING-LOADED SEAL RING ARE USED.
FOR STANDARD PTFE SEATING WITH ALL
USE TRIM 87 INSTEAD OF TRIM 85 FOR NONLUBRICATING FLUIDS SUCH AS SUPERHEATED STEAM OR DRY GASES BETWEEN 149C (300F) AND 316C(600F).
87C
85C
0 100 200 300 400 500
-- 5 0
FLUID TEMPERATURE, F
2
BODY MATERIALS
110
100
90
80
70
60
50
40
30
20
10
0
PRESSURE DROP, BAR
--100 --50 0 50 100 150 200 250
1600
1400
1200
1000
800
600
400
PRESSURE DROP, PSI
200
0
--200 --100 0 100 200 300 400 500 600
FOR OPTIONAL METAL SEATING WITH
FLUID TEMPERATURE, C
86
3
1
85
FLUID TEMPERATURE, F
2
CF8M MATERIAL
300
110
100
90
80
70
87
450
60
50
40
30
PRESSURE DROP, BAR
20
10
0
4
9
Product Bulletin
51.1:EW
August 2012
EW Valve
D100023X012
---
---
---
(1)
CL150, 300, or 600 CL900
x
x
x
x
---
x
---
x
---
Table 2. Available Valve Constructions
VALVE
4x2 6x4 8x4 8x6 10x6
EWD
EWD-1
EWS
EWS-1
EWT
EWT-1
1. X indicates availableconstruction.
2. Two-number valve sizedesignatesend connection size x effective trim size.
3. NPS 10x6 has avalveoutlet area identical to the NPS 8x6.
---
---
---
x
x
x
x
---
x
---
x
---
Available Configurations
All configurations covered in this bulletin use a
single-port, globe-style valve body with cage guiding
and push-down-to-close valve plug action. This valve
style is combined with different plug styles and either a
clamped seat ring (no dash number suffix) or a seat
ring threaded into the valve body (-1 suffix).
EWD: Balanced valve plug (figure 1) with clamped seat
ring and metal-to-metal seating for all general
applications over a wide range of pressure drops and
temperatures.
EWD-1: NPS 12x8 CL900 EWD valve body, with
threaded seat ring.
EWS: Unbalanced valve plug (figure 3) with clamped
seat ring and 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 body.
EWS-1: NPS 12x8 CL900 EWS valve body, with
threaded seat ring and metal-to-metal seating.
VALVE SIZE
---
---
---
(2)
,NPS
(3)
x
x
x
12x6 10x8 12x8 8x6 12x8
x
---
x
---
x
---
---
---
---
x
x
x
---
---
---
x
x
x
x
---
x
---
x
---
Material Selection
Guidelines
Regardless of valve construction, select the valve
body/bonnet material from the specifications table,
keeping in mind that the valve service conditions
cannot exceed the ASME pressure/temperature
limitations for the selected valve body. Then, perform
steps 1 and 2 under the appropriate valve design
heading to complete the selection process.
EWD, EWS, or EWT Valve With All
Except Cavitrol III or Whisper Trim III
Cages
1. Choose a trim combination for the service
conditions according to figure 7 and 8, while making
sure from tables 1 and 5 that this combination
provides the desired trim materials. Then, make sure
from table 11, 12, or 13 that the valve body/trim
temperature limits are not exceeded.
2. Finally, check in table 20 that packing and other
valve parts are available in materials that meet the
desired service conditions.
x
x
x
x
x
x
EWT: Balanced valve plug (figure 2) with metal- to-PTFE
seating (for stringent shutoff requirements) standard
in all EWT valves (except those with Cavitrol III cages).
Metal-to-metalseatingforhighertemperaturesis
standard for all EWT valve bodies with Cavitrol III cages
and optional for these valves with other cages.
EWT-1: NPS 12x8 CL900 EWT valve body, with
threaded seat ring and with metal-to-metal seating
(figure 4).
10
EWD-1, EWS-1, or EWT-1 Valve With
Standard Cage
1. Choose a trim combination for the service
conditions according to figure 9, while making sure
from table 7 that this combination provides the
desired trim materials.
2. Finally, check in table 20 that packing and other
valve parts are available in materials that meet the
desired service conditions.
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