Emerson Fisher EU Data Sheet
EU Valve
D102004X012
Fisherr EU and EW Valves
NPS 16 through 24 x 20
The Fisher NPS 16 through 24 × 20 CL150 through
CL600 EUT-2, EWT-2, EUD, EWD, EUT, and EWT control
valves (figures 3 and 4) are used for either throttling or
on-off control of a wide variety of liquids and gasses.
CL900 NPS 16 and 20 x 16 valves are available upon
request. Please contact your Emerson Process
Management sales office for more details. These
valves have single ports, balanced valve plugs, and
cage guiding.
EUT-2andEWT-2valveswithahangingcage(figure3)
are available for demanding applications in oil and
natural gas to 232_C(450_F). The hanging cage, with
the seat ring threaded into the cage, gives these valves
easy-maintenance trim--no trim parts are threaded
into the valve body. The seal between the plug and
cage and the seal between the seat ring and valve body
are spring-loaded PTFE seals.
Product Bulletin
51.1:EU
September 2014
EUD and EWD valves (figure 4) have a bolted-in seat
ring. These valves have metal-to-metal seating and use
two graphite piston rings between the valve plug and
cage. They are used primarily for high temperature
(over 232_C[450_F]) service. The Bore Seal is used to
obtain Class V shutoff above 316_C (600_F).
EUT and EWT valves (figure 1) have a bolted-in seat
ring. These valves have metal-to-metal seating and use
PEEK anti-extrusion rings to obtain temperatures up to
316_C(600_F).
Thesevalvessharethefollowingcharacteristics:
multiple trim material choices, trim part
interchangeability, and different cage styles to provide
particular flow characteristics to handle specific
applications.
W9156-2
To help reduce aerodynamic noise in gas service,
Whisper Trimt III (figure 5) and WhisperFlot cages
are available. To eliminate liquid cavitation damage,
Cavitrolt III cages are available. For cavitating liquids
with particulate, DST (dirty service trim) is available.
www.Fisher.com
Product Bulletin
51.1:EU
September 2014
Specifications
EU Valve
D102004X012
Valve Sizes
EUT-2, EUD, and EUT:
EWT-2, EWD, and EWT:
J 24 x 16, and J 24 x 20 valves (size designations
J NPS 16 and J 20
J NPS 20 x 16,
are end connection size x nominal trim size)
Construction Materials
Valve Body and Bonnet:
J LCC steel, or J CF8M (316 stainless steel). For
other materials, consult your Emerson Process
Management sales office
Trim and Other Parts: Seetables1,2,and3.
End Connection Styles
Flanged: CL150, 300, and 600 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
(1)
Flanged: Consistent with CL150, 300, and 600
Flow Characteristics
Standard Cages:
Whisper Trim III and Cavitrol III Cages: Linear
WhisperFlo Cages: Linear
For other characteristics, contact your Emerson
Process Management sales office for details.
Flow Direction
Standard and Cavitrol III Cages: Down
Whisper Trim III Cages: Up
WhisperFlo Cages: Up
pressure-temperature ratings per ASME B16.34
Buttwelding: Consistent with CL600 per
ASME B16.34
Material Temperature and Pressure Drop
Capabilities
(1)
Flow Coefficients
See Fisher Catalog 12
Port Diameters
See tables 6 and 7
See table 1 and figures 6 and 7.
Valve Plug Travel
Shutoff Classifications per ANSI/FCI 70-2andIEC
60534-4
EUT and EWT with Metal Seats
102 through 432 mm (4 to 17 inches).
Contact your Emerson Process Management sales
office for further details if needed
Standard: Class V
EUT-2andEWT-2withMetalSeats
Standard (for all trims except 2
-
Stage Cavitrol Trim):
Class IV
Standard (for 2
Optional (for all trims except 2
-
Stage Cavitrol Trim): Class V
-
Stage Cavitrol Trim):
Class V
EUT-2andEWT-2 with Soft Metal Seats
Class V
EUDandEWDwithMetalSeats
Standard: Class III
Optional: Class IV and V
1. The pressure/temperaturelimits in this bulletin andany applicable standardor code limitation for valve should not be exceeded.
Yoke Boss and Stem Diameters
J 127 mm (5-inch) or J 127 mm (5H-inch) diameter
yoke boss, each with 31.8 mm
(1.25 inch) diameter valve stem
Typical Bonnet Style
Standard Plain (style 1 extension)
Approximate Weights
Seefigure8
J WCC steel, J WC9 steel,
J Linear or J equal percentage
2
EU Valve
D102004X012
Figure 1. Fisher EUT / EWT Valve with PEEK Anti-Extrusi on Rings
Product Bulletin
51.1:EU
September 2014
W9518-1
Features
Stable Control at High Pressure Drops-- Rugged
cage guiding stabilizes the valve plug at all points in
itstravelrange.Thisguidingreducesvibration,
mechanical noise, and the need for hydraulic
snubbers.
Economy-- Streamlined flow passages provide
greater capacities per initial investment than most
globe valves of the same size. Balanced valve plug
design can allow use of smaller actuators for high
pressure drops.
Cost-Effective Operation-- Increased wear
resistance of the standard hardened stainless steel
trim means long-lasting service.
Easy Maintenance-- The valve can stay in the
pipeline during removal of trim parts for inspection
or maintenance.
3
Product Bulletin
51.1:EU
September 2014
Figure 2. Typical Fisher EUD with Bore Seal
A
RETAINER
EU Valve
D102004X012
PISTON RING
CAGE
SEATING AREA
W6022-2
Bore Seal Description
TheBoreSeal(figure2)isavailablefortheEUDand
EWD only and is required for Class V shutoff
applications where the service temperature exceeds
316_C(600_F). For service temperatures below 316_C
(600_F), the EWT and EUT should be used when Class
V shutoff is required. See table 4 for availability and
temperature limits and figure 2.
TheBoreSealemploysametalCshaped seal ring that
PLUG
RETAINER
PLUG
FLOW DOWN
FLOW UP
VIEW A
BORE SEAL
PISTON RING
CAGE
SEATING AREA
BORE SEAL
is secured to the outside diameter of the valve plug.
When the valve plug comes into contact with the seat
ringtoclosethevalve,theBoreSealiscompressed
against the cage wall, thereby blocking a secondary
leakage path that exists between the plug and cage
wall. When the valve plugis not in contact with the
seat ring (i.e. valve open), theBoreSealisnotengaged
and the piston rings that are also secured to the
outsidediameteroftheplugassumetheroleof
blocking this secondary leakage path.
4
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