Page 1
Instruction Manual
D104707X012
WhisperTube
Fisher™ 6060 WhisperTube Modal Attenuator
August 2021
Contents
Introduction 1.................................
Scope of Manual 1.............................
Description 1.................................
Specifications 3...............................
Educational Services 3.........................
Installation 4..................................
Maintenance 5.................................
Disassembly 5................................
Assembly 5...................................
Parts Ordering 7................................
Parts List 7....................................
Introduction
Scope of Manual
This instruction manual provides installation,
maintenance, and parts ordering information for the
NPS 2 through 12 Fisher WhisperTube modal
attenuator.
Description
The WhisperTube is a passive reactive silencer
designed for installation downstream of the control
valve or other equipment contributing to system
noise. Requiring negligible pressure drop across the
device, the WhisperTube achieves system noise
reduction across a wide range of fluid flow rates,
pressures and temperatures.
Figure 1. Fisher 6060 WhisperTube
X1815
Fisher NPS2 CL600 WHISPERTUBE
X1820
Fisher NPS8 CL600 WHISPERTUBE
www.Fisher.com
Do not install, operate, or maintain a 6060 WhisperTube 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
before proceeding.
Page 2
WhisperTube
August 2021
Table 1. Specifications
Instruction Manual
D104707X012
Valve Sizes and End Connection Style
J NPS 2, J 3, J 4, J 6, J 8, and J 12 with CL150,
Temperature Capability
-46 to 371°C (-50 to 700°F)
CL300, or CL600 raised‐face flanges compatible with
ASME B16.5
Maximum Inlet Pressure
(1)
Weights and Threaded Lifting Provision Size
See table 3
Consistent with CL150, CL300, or CL600
pressure-temperature ratings per ASME B16.34
Construction Materials
See table 2
1. The pressure/temperature limits in this manual and any applicable standard limitations should not be exceeded.
Design Standards
The WhisperTube pressure boundary is designed in
accordance with ASME Boiler and Pressure Vessel
Code, Section VIII, Division 2
Table 2. Construction Materials
PART MATERIAL
Body
(2)
Retainer
Retainer Gasket
Screen S30400 -254 to 427 -425 to 800
Wave Spring N07750 -254 to 371 -425 to 700
Studs
Nuts
Spiral Wound Gasket
1. WCC and LCC dual certified.
2. NPS 2 through NPS 6 constructions only.
3 NPS 8 through NPS 12 constructions only.
(2)
(3)
(3)
(3)
WCC / LCC
Laminated Graphite -254 to 427 -425 to 800
N06600/Graphite -254 to 454 -425 to 850
(1)
LF2 -46 to 427 -50 to 800
B7M -48 to 427 -55 to 800
2HM -48 to 427 -55 to 800
TEMPERATURE LIMITS
_C _F
-46 to 427 -50 to 800
2
Page 3
Instruction Manual
D104707X012
Table 3. Assembly Weight and Threaded Lifting Provision Size
VALVE SIZE, NPS PRESSURE CLASS
150 30 67
2
3
4
6
8
10
12
300 32 70
600 33 73
150 48 105
300 52 115
600 55 120
150 102 224
300 109 239
600 118 259
150 205 452
300 224 492
600 246 542
150 464 1020
300 500 1100
600 614 1350
150 750 1650
300 811 1785
600 966 2125
150 1025 2255
300 1109 2440
600 1264 2780
kg lbs Size Quantity
WhisperTube
August 2021
WEIGHT THREADED LIFTING PROVISION
3/8-16 UNC 1
3/8-16 UNC 1
3/8-16 UNC 2
1/2-13 UNC 2
1/2-13 UNC 2
5/8-11 UNC 2
3/4-10 UNC 2
Specifications
Specifications for the WhisperTube Model Attenuator are listed in tables 1, 2, and 3.
Educational Services
For information on available courses for Fisher WhisperTube, as well as a variety of other products, contact:
Emerson Automation Solutions
Educational Services - Registration
Phone: 1-641-754-3771 or 1-800-338-8158
E-mail: education@emerson.com
emerson.com/fishervalvetraining
3
Page 4
WhisperTube
August 2021
Instruction Manual
D104707X012
Installation
WARNING
Always wear protective gloves, clothing, and eyewear when performing any installation operations to avoid personal
injury.
To avoid personal injury or property damage resulting from the sudden release of pressure, do not install the WhisperTube
assembly where service conditions could exceed the limits given on the 6060 nameplate. Use pressure‐relieving devices as
required by accepted industry, local, state, or federal 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.
Use proper lifting and rigging practices while moving the WhisperTube. Failure to utilize safe lifting practices may result in
equipment damage and/or personal injury.
Avoid personal injury or property damage caused by uncontrolled movement or dropping of the WhisperTube assembly.
The threaded lifting provisions are for installation of hoist rings or lifting eye bolts and are sized for lifting the 6060 only. Do
not use lifting provisions to lift the WhisperTube if piping or other equipment is attached.
1. If the WhisperTube will be placed in storage prior to installation, protect the flanges and keep the inside of the body
dry and clear of foreign material.
2. Install a three‐valve bypass around the 6060 assembly if continuous operation will be necessary during inspection
and maintenance.
3. Inspect the WhisperTube body for damage and be certain the body internal cavities are free of foreign material.
4. Be certain that adjacent pipelines are free of any foreign material, such as pipe scale or welding slag, that could
damage the WhisperTube.
5. The standard flow direction is with the wave spring (key 4) facing upstream.
6. The WhisperTube may be installed in any orientation and achieve system noise reduction. The recommended
orientation for a horizontal pipeline is with the pipe plug and drain port facing down to allow removal of any
potential process liquid buildup.
7. Install suitable line flange gaskets and insert the 6060 assembly between the pipeline flanges.
8. Center the WhisperTube by making sure the mating flanges are aligned. Insert flange studs and tighten nuts in a
star pattern to ensure the flange gaskets are compressed evenly.
4
Page 5
Instruction Manual
D104707X012
WhisperTube
August 2021
Maintenance
WARNING
Avoid personal injury or damage to property from sudden release of pressure or uncontrolled process fluid. Before starting
disassembly:
D Always wear protective gloves, clothing, and eyewear when performing any maintenance operations to avoid personal
injury.
D Use bypass valves or completely shut off the process to isolate the WhisperTube from process pressure.
D Remove process pressure and drain the WhisperTube if necessary.
D Use lock‐out procedures to be sure that the above measures stay in effect while you work on the equipment.
D Check with your process or safety engineer for any additional measures that must be taken to protect against process
media.
Disassembly
1. Isolate the WhisperTube from the process pressure, relieve all process pressure, and drain any internal liquid
buildup if necessary.
2. Remove the WhisperTube from the pipeline.
Follow steps 3-5 for a single piece body construction (NPS 2-6)
3. Remove the screen retainer (key 8) by loosening the two retainer screws (key 11).
4. Remove the wave spring (key 4) and perforated screen tube (key 2).
5. Inspect the perforated screen tube, wave spring, and internal surfaces of the WhisperTube body (key 1) and replace
damaged components as necessary. Visually inspect the flange serrated surfaces for any damage that may prevent
proper sealing.
Follow steps 6-9 for the two-piece body construction (NPS 8-12)
6. Set the WhisperTube in a vertical position with one flange resting on a clean soft surface. Use caution to protect the
flange serrated surfaces.
14).
7. Remove the spiral wound gasket (key 12) and perforated screen tube (key 3).
8. The wave spring (key 4) may be accessed and removed from the inlet flange end of the WhisperTube body.
9. Inspect the perforated screen tube, wave spring, and internal surfaces of the WhisperTube body (key 1) and replace
damaged components as necessary. Visually inspect the flange serrated surfaces for any damage that may prevent
proper sealing.
Separate the two body halves by removing the body flange studs and nuts (keys 13 and
Assembly
Follow steps 10-13 for a single piece body construction (NPS 2-6)
10. Ensure the old flat sheet gasket (Key 9) is removed.
11. Re-insert the perforated screen tube into the body bore until the end of the tube seats against an internal ledge in
the body at the outlet flange end.
12. Re-install the wave spring.
13. Center a new flat sheet gasket (key 9) on the screen retainer sealing surface and install on the body. Secure the
retainer with washers (key 10) and retainer screws (key 11).
5
Page 6
WhisperTube
August 2021
Instruction Manual
D104707X012
Follow steps 14-20 for the two-piece body construction (NPS 8-12)
14. Install the wave spring (key 4) in the groove at the flange end of the inlet body half.
15. Assembly is easiest if the parts are oriented vertically. Place the inlet body half flange end down on a clean soft
surface. Use caution to protect the flange end serrated surfaces.
16. Install the perforated screen tube in the inlet body half until it contacts the wave spring.
17. Center the spiral wound gasket (key 12) on the inlet body flange serrated surface.
18. Lower the outlet body half over the screen. Ensure the drain pipe plugs and the threaded lifting lugs are aligned and
located on the same side of the body in both the inlet and outlet halves.
19. Apply anti-seize lubricant compound to the face and threads of the hex nuts and to the threads of the studs. Install
the nuts and studs. Use an appropriate torque device to apply the final torque specification (see table 4). Tighten
nuts in a star pattern to ensure the spiral wound gasket is compressed evenly.
Table 4. Body Flange Torque Specifications
VALVE SIZE, NPS PRESSURE CLASS STUD MATERIAL STUD SIZE
10
12
8
150, 300
600 1 1/4” – 8 x 8.75” 695
150, 300 1 1/4” – 8 x 7.50” 695
600 1 1/2” – 8 x 10.00” 1220
150, 300 1 1/4” – 8 x 7.70” 695
600 1 5/8” – 8 x 10.75” 1570
B7M
1 1/8” – 8 x 6.75” 525
TORQUE
(ft•lbs)
6
Page 7
Instruction Manual
D104707X012
WhisperTube
August 2021
Parts Ordering
Always mention the WhisperTube serial number when corresponding with your Emerson sales office regarding this
equipment.
WARNING
Use only genuine Fisher replacement parts. Components that are not supplied by Emerson should not, under any
circumstances, be used in any Fisher valve, because they may void your warranty, might adversely affect the performance
of the valve, and could cause personal injury and property damage.
Parts List
Note
Contact your Emerson sales office
Key Description
1 Body
If a WhisperTube body is needed as a replacement part,
order by size, pressure class, serial number,
and desired material.
for Part Ordering information.
2 Pipe Plug
3 Screen
4 Wave Spring
5 Nameplate (not shown)
6 Drive Screw (not shown)
7 NACE Tag (not shown)
8 Retainer
9* Retainer Gasket
10 Washer
11 Socket Head Cap Screw
12* Spiral Wound Gasket
13 Stud
14 Heavy Hex Nut
15 Anti-seize Lubricant
16 Thread Protector Plug
17 Flow Arrow (not shown)
*Recommended spare parts
7
Page 8
WhisperTube
August 2021
Figure 2. Fisher WhisperTube Cross Sectional View, NPS 2 through 6
KEY NUMBERS NOT SHOWN ARE 5, 6, AND 7
GH13406
Instruction Manual
D104707X012
Figure 3. Fisher WhisperTube Exploded View, NPS 2 through 6
KEY NUMBERS NOT SHOWN ARE 5, 6, AND 7
GG75242
8
Page 9
Instruction Manual
D104707X012
Figure 4. Fisher WhisperTube Cross Sectional View, NPS 8 through 12
WhisperTube
August 2021
APPLY LUB
KEY NUMBERS NOT SHOWN ARE 5, 6, 7, AND 17
GH12856
Figure 5. Fisher WhisperTube Exploded View, NPS 8 through 12
APPLY LUB
KEY NUMBERS NOT SHOWN ARE 5, 6, 7, AND 17
GG75270
9
Page 10
WhisperTube
August 2021
Instruction Manual
D104707X012
10
Page 11
Instruction Manual
D104707X012
WhisperTube
August 2021
11
Page 12
WhisperTube
August 2021
Instruction Manual
D104707X012
Neither Emerson, Emerson Automation Solutions, nor any of their affiliated entities assumes responsibility for the selection, use or maintenance
of any product. Responsibility for proper selection, use, and maintenance of any product remains solely with the purchaser and end user.
Fisher is a mark owned by one of the companies in the Emerson Automation Solutions business unit of Emerson Electric Co. Emerson Automation Solutions,
Emerson, and the Emerson logo are trademarks and service marks of Emerson Electric Co. All other marks are the property of their respective owners.
The contents of this publication are presented for informational purposes only, and while every effort has been made to ensure their accuracy, they are not
to be construed as warranties or guarantees, express or implied, regarding the products or services described herein or their use or applicability. All sales are
governed by our terms and conditions, which are available upon request. We reserve the right to modify or improve the designs or specifications of such
products at any time without notice.
Emerson Automation Solutions
Marshalltown, Iowa 50158 USA
Sorocaba, 18087 Brazil
Cernay, 68700 France
Dubai, United Arab Emirates
Singapore 128461 Singapore
www.Fisher.com
12
E 2021 Fisher Controls International LLC. All rights reserved.
Loading...