Fisher A41 User manual

FisherrA41 High Performance Butterfly Valve
Contents
Introduction 1...............................................................
Scope of Manual 1.................................................
Description 1.........................................................
Specifications 2....................................................
Educational Services 2
...........................................
Installation 5
................................................................
Valve Orientation 6...............................................
Maintenance 9
.............................................................
Packing Maintenance 12........................................
Seal Ring Maintenance for NPS 3through 12 13
.....
Seal Ring Maintenance for NPS 219.......................
Disc, Drive Shaft and Bearing Maintenance for
NPS 3through 12 20.........................................
Disc, Drive Shaft and Bearing Maintenance for
NPS 224.............................................................
Actuator Mounting 26...........................................
Parts Ordering 27
.........................................................
Retrofit Kits for ENVIRO-SEALtPacking 27
............
Repair Kits for ENVIRO-SEAL Packing 28
..................
Parts List 28
...............................................................
Figure 1. Fisher A41 Valve
W9269
Introduction
Scope of Manual
This instruction manual includes installation, maintenance, and parts information for Fisher A41 high performance
butterfly valves (figure 1). Refer to separate instruction manuals for information covering the power on-off actuator
and accessories.
Do not install, operate, or maintain A41 valves 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.
Description
The A41 high performance butterfly valves have eccentrically mounted discs to reduce wear and reduce torque
requirements. The valve includes filled-PTFE or graphite packing rings that electrically bond the shaft to the valve
body. This valve has aDouble D drive shaft end, and soft or metal seal rings for use in awide variety of applications.
Instruction Manual A41 Valve
www.fishvalve.nt-rt.ru
По вопросам продаж и поддержки обращайтесь:
 [phone],  [phone],  [phone], [phone], [phone], [phone],
[phone],  [phone], [phone], -[phone], [phone],
Единый адрес: [e-mail]

2
Table 1. Specifications
Valve Sizes and End Connection Styles
NPS J2, J3, J4, J6, J8, J10, and J12 valves
in wafer or single flanged style (NPS 2 available in
wafer style only)
Maximum Inlet Pressures(1)
Carbon Steel, Stainless Steel, and CN7M Valves:
Consistent with CL150 and 300 pressure-temperature
ratings per ASME B16.34, unless limited by material
temperature capabilities. NPS 2is also consistent with
CL600
Maximum Pressure Drops(1)
Consistent with CL150 and 300 pressure/
temperature ratings per ASME B16.34 except for
PTFE, UHMWPE, and Phoenix III seals that are derated
at some higher pressure/temperatures values. (See
figure 2)
Shutoff Classifications
JPTFE, Reinforced PTFE, and UHMWPE(2) Seal: No
visible leakage for this bidirectional seal per MSS
SP-61
JNPS 2Metal Seal: Bidirectional shutoff. 0.001% of
maximum valve capacity (1/10) of Class IV per
ANSI/FCI 70-2 and IEC 60534-4. Pressure Drop is 740
psig forward and 100 psig reverse
JNOVEX Seal: Unidirectional shutoff is MSS SP-61 in
the preferred flow direction
JPhoenix III Seal:No visible leakage for this
bidirectional seal per MSS SP-61. For optional Phoenix
III Fire-Tested seal, consult your Emerson Process
Management sales office
Flow Characteristic
Approximately linear
Flow Direction
See figure 4
Disc Rotation
Clockwise to close (when viewing the drive shaft end)
through 90 degrees of disc rotation (see figure 7)
Valve Classification
Face-to-face dimensions of NPS 3through 12 in
CL150 or 300, and meets API 609 or MSS-SP68
standards for face-to-face dimensions of wafer-style
and single-flange valves
Actuator/Valve Action
With the diaphragm or piston actuators, the valve
action is field-reversible. Refer to information in the
Installation section and in figures 6and 7.
Shaft Diameters
See table 2
Approximate Weights
See table 2
ENVIRO-SEAL Packing
This optional PTFE or graphite packing system
provides excellent sealing, guiding, and transmission
of loading force to control liquid and gas emissions
(see figure 6). See Bulletin 59.3:041 ENVIRO-SEAL
Packing System for Rotary Valves for more
information
1. The pressure/temperature limits in this manual and any applicable standard or code limitation for valve should not be exceeded.
2. UHMWPE stands for ultra high molecular weight polyethylene.

3
Table 2. Valve Size, Shaft Diameter, and Approximate Weight
VALVE SIZE,
NPS
PRESSURE
CLASS
SHAFT DIAMETER APPROXIMATE WEIGHT
Wafer-Style Single-Flange
mm Inches kg Pounds kg Pounds
2150/300/600 12.7 1/2 4.3 9.5 --- ---
3150 12.7 1/2 4.5 10 6.4 14
300 15.9 5/8 5.9 13 11 25
4150 15.9 5/8 8.6 19 11 24
300 19.1 3/4 10 23 18 39
6150 19.1 3/4 13 29 16 35
300 25.4 115 33 27 59
8150 25.4 121 47 27 59
300 31.8 1-1/4 24 53 42 93
10 150 31.8 1-1/4 34 75 40 88
300 38.1 1-1/2 44 96 78 172
12 150 38.1 1-1/2 49 107 62 137
300 44.5 1-3/4 64 141 131 288
Table 3. Maximum Allowable Inlet Pressure for M35-1 and CW2M Valve Bodies(1)
TEMPERATURE M35-1 CW2M
_CBar
-46 to 38
93
149
204
260
15.8
13.8
13.1
12.7
11.7
41.3
36.5
34.1
33.1
32.8
82.7
72.7
68.2
65.8
65.5
20.0
17.9
15.9
13.8
11.7
51.7
51.7
50.3
48.6
45.9
103.4
103.4
100.3
97.2
91.7
TEMPERATURE CL150 CL300 CL600(2) CL150 CL300 CL600(2)
_FPsig
-50 to 100
200
300
400
500
230
200
190
185
170
600
530
495
480
475
1200
1055
990
955
950
290
260
230
200
170
750
750
730
705
665
1,500
1,500
1,455
1,410
1,330
1. M35-1 and CW2M valve material are not included in ASME B16.34 pressure/ temperature ratings. The designations 150 and 300 for this valve material are used only to indicate relative pres
sure/retaining capabilities and are not ASME pressure/ temperature rated classes.
2. CL600 is only available in NPS 2.

4
Figure 2. Maximum Pressure/Temperature Ratings
NOTE:
TEMPERATURE LIMITATIONS DO NOT ACCOUNT FOR THE ADDITIONAL
LIMITATIONS IMPOSED BY THE BACKUP RING USED WITH THIS SEAL.
TO DETERMINE THE EFFECTIVE TEMPERATURE LIMITATION OF THE
APPROPRIATE SEAL/BACKUP RING COMBINATION, REFER TO TABLE 4.
1
A6306-2
OPERATING TEMPERATURE, _C
OPERATING TEMPERATURE, _F
DIFFERENTIAL PRESSURE, PSI
PHOENIX III SEAL
WITH PTFE INSERT
PTFE AND REINFORCED
PTFE SEAL
UHMWPE
SEAL
Table 4. Construction Material Temperature Limits
COMPONENTS AND MATERIALS OF CONSTRUCTION TEMPERATURE LIMITS
_C_F
Valve Body Material
Carbon Steel
CF8M
CG8M
-29 to 427
-198 to 538
-198 to 538
-20 to 800
-325 to 1000
-325 to 1000
Disc Material
S31600
CG8M
-198 to 538
-198 to 538
-325 to 1000
-325 to 1000
Shaft Material
S20910
S17400
-198 to 538
-62 to 427
-325 to 1000
-80 to 800
Bearing Material
PEEK /PTFE lined
Metal
-73 to 260
-198 to 538
-100 to 500
-325 to 1000
Packing Material
PTFE V-rings
Graphite rings
-46 to 232
-198 to 438
-50 to 450
-325 to 1000
Seal Ring
PTFE (Standard) -46 to 232 -50 to 450
Reinforced PTFE Soft Seal Ring -46 to 232 -50 to 450
UHMWPE Soft Seal Ring -18 to 93 0to200
NOVEX Metal Seal Ring -46 to 538 -50 to 1000
NPS 2 Metal Seal ring -46 to 538 -50 to 1000
Phoenix III Metal Seal Ring
Fluorocarbon backup ring -40 to 232 -40 to 450
Phoenix III Fire-Tested(1) Metal Seal Ring
Fluorocarbon backup ring
(Specify metal bearings and graphite packing) (1) (1)
1. For component selection and applicable fire-tested standards and codes, consult your Emerson Process Management sales office.

5
Hex Head Cap Screw and Stud Bolt Data(1)
VALVE
SIZE,
NPS
WAFER STYLE SINGLE FLANGE STYLE
CL150 CL300 CL150 CL300
No. of
Stud
Bolts
Size Dia
Inch &
Thread
A
Dimen-
sion,
Inch
No. of
Stud
Bolts
Size Dia
Inch &
Thread
A
Dimen-
sion,
Inch
No. of
Cap
Screws
Size Dia
Inch &
Thread
B
Dimen-
sion,
Inch
No. of
Cap
Screws
Size Dia
Inch &
Thread
B
Dimen-
sion,
Inch
2(2) 45/8-11 5 8 5/8-11 5.25 --- --- --- --- --- ---
3 4 5/8-11 5.75 83/4-10 6.5 85/8-11 1.875 16 3/4-10 2
4 8 5/8-11 6 8 3/4-10 716 5/8-11 216 3/4-10 2.25
6 8 3/4-10 6.5 12 3/4-10 7.5 16 3/4-10 224 3/4-10 2.5
8 8 3/4-10 712 7/8-9 916 3/4-10 2.25 24 7/8-9 3
10 12 7/8-9 816 1-8 10 24 7/8-9 2.5 32 1-8 3.5
12 12 7/8-9 8.5 16 1-1/8-8 11 24 7/8-9 2.75 32 1-1/8-8 3.75
1. Thread engagement in accordance with ASME B31.3.
2. The NPS 2valve is only available in wafer style and is multirated to CL150, 300 and 600. The CL600 stud bolts require 8bolts, have adia. of 5/8-11, and are 6inches long.
Figure 3. Cap Screws and Stud Bolts for Installation
A3887
A3886
STUD BOLT CAP SCREW
AB
Installation
The valve is normally shipped as part of avalve assembly, with the actuator, handlever, or handwheel mounted on the
valve. If the valve or actuator have been purchased separately, or if the actuator has been removed for maintenance,
mount the actuator on the valve, and adjust actuator travel before inserting the valve body into the line. This is
necessary due to the measurements that must be made during the actuator calibration adjustment process. Refer to
the Actuator Mounting section of this manual and to the separate actuator or handlever instruction manual for
mounting and adjustments before proceeding.
WARNING
Always wear protective gloves, clothing and eyewear when performing any installation or maintenance operations to
avoid personal injury.
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, the limits on the appropriate nameplates,
or the matching pipe flange rating. Use pressure-relieving devices as required by government or accepted industry 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.

6
CAUTION
The valve configuration and construction materials were selected to meet particular pressure, temperature, pressure drop,
and controlled fluid conditions specified in the customer's order. Because some body/trim material combinations are
limited in their pressure drop and temperature range capabilities (especially due to differences in thermal expansion rates),
do not apply any other conditions to the valve without first contacting your Emerson Process Management sales office.
1. Install athree-valve bypass around the control valve assembly if continuous operation is necessary during
inspection and maintenance of the valve.
2. Inspect the valve to be certain that it is free of foreign material.
3. Be certain that adjacent pipelines are free of any foreign material, such as pipe scale or welding slag, that could
damage the valve sealing surfaces.
CAUTION
Damage to the disc will occur if any pipe flanges or piping connected to the valve interfere with the disc rotation path. If the
piping flange has a smaller inner diameter than specified for schedule 80 piping, measure carefully to be certain the disc
rotates without interference before putting the valve into operation.
Valve Orientation
When installing the valve, it is highly recommended that the valve drive shaft be horizontal as shown in figure 4.
Valve Direction
The high performance butterfly valve is designed to allow flow in either direction when in the open position. When in
the closed position, high pressure should be applied to aspecific side of the disc to provide best performance and
optimal valve life (see list of seal types below). See figure 4.
Table 5. Special Spiral Wound Gasket Dimensions, Inches
Valve Size, NPS Class Gasket Internal Diameter Gasket Outside Diameter Centering Outside
Diameter(1)
3150 4.25 5.00 5.375
3300 4.25 5.00 5.875
4150 5.25 6.125 6.875
4300 5.25 6.125 7.125
1. Dimension per API 601 and ASME B16.5 Flanges.
Applications with bi-directional seals, such as soft or Phoenix III, under normal operating conditions can (at different
times) experience pressure in both directions; the highest of the two pressures should be exerted on the preferred side
of the disc. If the two pressures are equal, then the one lasting the longest period of time should be applied to the
preferred side.
1. For PTFE, reinforced PTFE, or UHMWPE seal rings: This seal is bidirectional. For best performance, high pressure
should be applied to the front (retaining ring) side of the disc.
2. For metal seal rings:
a. NOVEX seal: The NOVEX seal is uni-directional. High pressure at the closed position MUST be at the back
(waterway side) of the disc.

7
b. Phoenix III Seal: This seal is bidirectional. For best performance, high pressure at the closed position should be
applied to the back (waterway side) of the disc.
c. NPS 2Seal: The preferred direction of installation is with high pressure at the front (retaining ring side) of the
disc. Reverse shutoff is permissible at lower pressure (see specifications table).
Installing the Valve in the Pipeline
WARNING
The edges of arotating disc have ashearing effect that may result in personal injury. To help prevent such injury, stay clear
of the disc edges when rotating the disc (figure 4).
CAUTION
Damage to the disc (key 3, figure 12) sealing surfaces may occur if the disc is not closed when the valve is being installed or
removed from the pipeline. If necessary, provide aloading pressure to the actuator temporarily to retain the disc in the
closed position while installing or removing the valve from the pipeline.
1. For Fail-Open Actuators: It will be necessary to provide atemporary loading pressure to the actuator diaphragm to
move the valve disc to the closed position. Observe the above Warning when closing the valve. If a loading pressure
is required, use caution when working with the valve. If the loading pressure is disconnected, the disc will open
rapidly.
2. With the disc in the closed position, install line flange gaskets, and insert the valve between the pipeline flanges.
WARNING
If spiral wound gaskets are to be used with an NPS 3 or 4 CL150 or 300 single flange valve, special spiral wound gaskets
conforming to the dimensions listed in table 5MUST be used. Improperly sized gaskets may increase the likelihood of 1)
excessive seat leakage, 2) damage due to contact with valve internals, and 3) external leakage; which may result in
personal injury due to asudden increase or decrease of pressure within -- or release of pressure from -- the pipeline. The
special dimension spiral wound gaskets can be obtained from your local spiral wound gasket vendor.
The remaining single flange valve sizes (NPS 6 through 12) and all wafer style valves (NPS 2 through 12) use the standard
size spiral wound gaskets. Only the single flange valves in the sizes and pressures listed in the table above require special
spiral wound gaskets.
Select the appropriate gaskets for the application. Flat sheet, spiral wound (NPS 6through 12), or other gasket types
made to ASME 16.5 group or a user's standards can be used for A41 valves depending on the service conditions and
applications.
3. Install the flange studs:
Note
Lubricate line flange studs or bolts before inserting into flanges. If necessary, provide additional support for the control valve
assembly because of its combined weight.

8
DFlange Studs: Install two or more line flange studs into the line flanges to help hold the valve in position while
centering the valve. Carefully center the valveontheflangestoensurediscclearance.
DSelect and install two pipeline gaskets.
DFlange Cap Screws:If line flange cap screws are used, be certain the cap screw threads engage the tapped holes to a
depth equal to the flange cap screw diameter.
4. Install the remaining line flange bolts to secure the valve in the pipeline. Tighten the bolts in acrisscross pattern to
ensure proper alignment of the valve with the flanges.
Packing Adjustment and Shaft Bonding
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.
CAUTION
Excessive tightening of packing will accelerate wear and could produce higher rotating friction loads on the valve stem.
1. For PTFE or graphite packing: Tighten standard packing follower nuts only enough to prevent shaft leakage.
Excessive tightening of packing will accelerate wear and could produce higher rotating friction loads on the valve
stem. If necessary, refer to the Packing Maintenance section.
2. ENVIRO-SEAL Packing Systems will not require this initial re-adjustment. Refer to the separate ENVIRO-SEAL Packing
System for Rotary Valves Instruction Manual (D101643X012) for repair and adjustment procedures.
3. For hazardous atmosphere or oxygen service valves, read the following Warning,and provide the bonding strap
assembly mentioned below if the valve is used in an explosive or hazardous atmosphere.
WARNING
The valve drive shaft is not necessarily grounded to the pipeline when installed. If the process fluid or the atmosphere
around the valve is flammable, personal injury or property damage could result from an explosion caused by a discharge of
static electricity from the valve components.
Standard PTFE packing is composed of apartially conductive carbon-filled PTFE female adaptor with PTFE V-ring packing.
Standard graphite packing is composed of all conductive graphite ribbon packing rings. Alternate shaft-to-valve body
bonding is available for hazardous service areas where you feel the the standard packing is not sufficient to bond the shaft
to the valve (see the following steps).
For oxygen service applications it is necessary to provide alternate shaft-to-valve body bonding (see the following steps).
4. Attach the bonding strap assembly (key 131, figure 5) to the shaft with the clamp (key 130, figure 5).
5. Connect the other end of the bonding strap assembly to the valve flange cap screws.
6. For more information, refer to the Packing Maintenance section below.

9
Figure 4. Flow Direction
NOTES:
1. BY EMERSON PROCESS MANAGEMENT DEFINITION:
DFORWARD FLOW IS INTO THE FACE SIDE OF THE DISC.
DREVERSE FLOW IS INTO THE HUB SIDE OF THE DISC.
RETAINER RING SIDE
MFG LABEL
FLOW ARROW
RETAINER RING SIDE
MFG LABEL
FLOW ARROW
FACE SIDE OF DISC
ARROW SHOWS PREFERRED FLOW DIRECTION FOR SOFT SEALS AND NPS 2 METAL SEAL
FORWARD
FLOW
REVERSE
FLOW
75B1181-A
A6881-2
FORWARD FLOW REVERSE FLOW
ARROW SHOWS FLOW DIRECTION FOR NOVEX METAL SEAL, AND PREFERRED
FLOW DIRECTION FOR PHOENIX METAL SEAL
Maintenance
Valve parts are subject to normal wear and must be inspected and replaced as necessary. The frequency of inspection
and replacement depends upon the severity of service conditions. Instructions are given in this section for replacing
packing, seal ring, disc, shaft, bearings, and other valve parts. Also, instructions are provided for changing valve action,
mounting, and adjusting the actuator. Refer to the actuator instruction manual for additional information for
mounting and adjusting the actuator.

10
CAUTION
It is possible to damage the valve if the actuator travel stops are not properly adjusted before stroking the valve.
WARNING
Avoid personal injury or property damage from sudden release of process pressure or bursting of parts. Before performing
any maintenance operations:
DDo not remove the actuator from the valve while the valve is still pressurized.
DAlways wear protective gloves, clothing, and eyewear when performing any maintenance operations to avoid personal
injury.
DDisconnect any operating lines providing air pressure, electric power, or acontrol signal to the actuator. Be sure the
actuator cannot suddenly open or close the valve.
DUse bypass valves or completely shut off the process to isolate the valve from process pressure. Relieve process pressure
from both sides of the valve. Drain the process media from both sides of the valve.
DVent the pneumatic actuator loading pressure and relieve any actuator spring precompression.
DUse lock-out procedures to be sure that the above measures stay in effect while you work on the equipment.
DThe 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.
DCheck with your process or safety engineer for any additional measures that must be taken to protect against process
media.
WARNING
The edges of arotating disc have ashearing effect that may result in personal injury. To help prevent such injury, stay clear
of the disc edges when rotating the disc (key 3).
CAUTION
During the following steps, do not rotate the disc past 90 degrees in the open direction. Rotating the disc past 90 degrees
can damage the seal ring.
Use caution when tightening the packing flange nuts. Overtightened nuts can damage packing box parts.