Emerson Fisher POSI-SEAL A41 Data Sheet

Product Bulletin

A41 Valve

D500212X012

21.1:A41

January 2013

Fisherr A41 High-Performance Butterfly Valve

The Fisher A41 valve features an eccentrically
mounted disc with a soft or stainless steel seal ring.
Soft seals provide excellent sealing capabilities in both
flow directions. The metal seal ring provides excellent
shutoff against pressure applied in the recommended
flow direction for both liquid and gas applications. The
NOVEX and Phoenix III metal seals are available for
demanding applications requiring excellent shutoff
capabilities. The double D shaft combines with a
variety of power and manual actuators to form a
reliable, high-performance valve suitable for many
power applications requiring tight shutoff.

Unless otherwise noted, all NACE references are to
NACE MR0175-2002.

Features

 Exceptional Shutoff–Bidirectionalsoftsealring(see

figure 2) with pressure-assisting action results in
exceptional shutoff rates as shown in the
specifications.

 Shaft Retention–Redundant shaft retention

provides added protection. The packing follower
and shaft step interact to hold the shaft securely in
the valve body (see figure 1).

 Easy Installation–The valve body self-centers on the

line flange bolts as a fast, accurate means of
centering the valve in the pipeline.

W9269

Fisher A41 Valve

 Improved Environmental Capabilities–The optional

ENVIRO-SEALt packing system is designed with
improved sealing, guiding, and loading force
transmission. The ENVIRO-SEAL packing system can
control emissions to below the EPA (Environmental
Protection Agency) limit of 100 ppm (parts per
million) for valves.

 Low Cost Maintenance–Individual disc/shaft

components can be replaced after disassembly due
to sleeve and taper pin connections (see figure 1).

 Sour Service Capability–Materials are available for

applications handling sour fluids and gases. These
materials comply with the requirements of NACE
MR0175-2002.

www.Fisher.com

Product Bulletin

21.1:A41
January 2013

Specifications

A41 Valve

D500212X012

Valve Sizes and End Connection Styles

NPS

J 2, J 3, J 4, J 6, J 8, J 10, and J 12 valve

sizes available in

J wafer or J single-flanged style

(NPS 2 only in wafer style)

Maximum Inlet Pressures

(1)

Carbon Steel and Stainless Steel Valve Bodies:
Consistent with CL150 and 300 pressure-temperature
ratings per ASME B16.34 unless limited by material
temperature capabilities. NPS 2 is 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 3)

Shutoff Classifications

J PTFE, Reinforced PTFE, and UHMWPE Seal:

(4)

No
visible leakage for this bidirectional seal per MSS
SP-61. See figure 4

J NPS 2 Metal 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
psigforwardand100psigreverse

J NOVEX Seal: For NPS 3 through 12. Unidirectional

shutoff is MSS SP-61 in the preferred flow direction.
Seefigure4

J Phoenix III Seal: For NPS 3 through 12. No visible

leakage for this bidirectional seal per MSS SP-61. See
figure 4. For optional Phoenix III Fire-Tested seal

(3)

consult your Emerson Process Management sales
office

NOVEX Seal: -46 to 538_C(-50to1000_F)
Phoenix III: -46 to 232_C (-50 to 450_F)
See table 3 for component temperature ranges

Construction Materials

Refer to table 3 for standard and optional material
selections

Flow Characteristic

Approximately linear

Flow Direction

Refer to figure 4

Flow Coefficients

See table 2, and Fisher Catalog 12

Noise Levels

See Catalog 12 for sound pressure level prediction

Disc Rotation

Clockwise to close (when viewing from the drive shaft
end) through 90 degrees of disc rotation

Available Actuators

J Pneumatic piston, J manual handwheel or
J handlever (handlevers are available for CL150 up to

anNPS8valve,andforCL300uptoanNPS6valve)

Actuator/Valve Action

,

With a pneumatic actuator, the valve action is
reversible. Refer to the information provided in the
Installation section and figure 4

Material Temperature Capabilities

(1)

PTFE and Reinforced PTFE Seals: -46 to 232_C(-50to
450_F)
UHMWPE Seal:

(4)

-18 to 93_C (0 to 200_F)

NPS 2 Metal Seal: -46 to 538_C(-50 to 1000_F)

2

Valve Classification

Face-to-face dimensions of NPS 3 through 12 in
CL150 or 300, and meets API 609 or MSS SP-68
standards for face-to-face dimensions of wafer style
and single-flange valves (see figure 6)

(continued)

A41 Valve

D500212X012

Specifications (continued)

Product Bulletin

21.1:A41

January 2013

Mating Flange Capabilities

All sizes compatible with appropriate CL150 or 300,
and NPS 2 also compatible with CL600, flanges
(schedule 80 or lighter, see figure 6, dimension M)

Approximate Weights

See table 1

ENVIRO-SEAL Packing

This optional PTFE or graphite packing system
provides improved sealing, guiding, and transmission
of loading force to control liquid and gas emissions

Shaft Diameters

(see figure 5). See Bulletin 59.3:041 ENVIRO-SEAL
Packing Systems for Rotary Valves for more

Seefigure6

1. The pressure/temperaturelimits in this bulletin and any applicable standard or code limitation for valve should not be exceeded.

2. Optional ClassV shutoff isavailable by contactingyour Emerson Process Management sales office.

3. For component selection and applicable fire-tested standards and codes,consult your Emerson Process Managementsales office (see table2).

4. UHMWPE stands for ultra high molecular weightpolyethylene.

information

Table 1. Valve Weights

VALVE SIZE, NPS

2 4 4 --- ---

3 5 6 6 11

4 9 10 11 18

6 13 15 16 27

8 21 24 27 42

10 34 44 40 78

12 49 64 62 131

(1)

2

3 10 13 14 25

4 19 23 24 39

6 29 33 35 59

8 47 53 59 93

10 75 96 88 172

12 107 141 137 288

1. Weight of the CL600 NPS 2 valve is the same as the CL150 and CL300 values.

CL150 CL300 CL150 CL300

9.5 9.5 --- ---

WAFER STYLE SINGLE-FLANGE

Kilograms

Pounds

3

Product Bulletin

21.1:A41
January 2013

Figure 1. Typical Valve Construction

RETAINER RING
SCREWS

A41 Valve

D500212X012

W6236

RETAINER RING
(PRESSED-IN)

NOVEX SEAL RING

SINGLE-FLANGED STYLE

WAFER STYLE

PTFE V-RING PACKING

SHAFT
STEP

DOUBLE D SHAFT

4

W6237-1

TAPER PINS
AND HOLLOW PINS

PACKING FOLLOWER

PACKING
FLANGE

A41 Valve

D500212X012

Product Bulletin

21.1:A41

January 2013

Figure 2. Available Seal Configurations

RETAINING
RING

PRESSURE­ASSISTED
SEAL

HIGH PRESSURE
SHUTOFF

DISC
FACE

B1558-3

GRAPHITE
GASKET

RETAINING
RING

A6301-1

NPS 2 METAL SEAL

HIGH
PRESSURE
SHUTOFF

UNIDIRECTIONAL SEAL

NOVEX METAL SEAL

VALVE BODY

VALVE
BODY

PRESSURE­ASSISTED
SEAL

SEAL RING

HUB SIDE
OF DISC

RETAINING
RING

SPRING

PRESSURE­ASSISTED
SEAL

HIGH
PRESSURE
SHUTOFF

DISC FACE

BIDIRECTIONAL S EAL

PTFE, REINFORCED PTFE, AND UHMWPE SEALS

RETAINING
RING

GRAPHITE
GASKET

BACKUP
O-RING

RESILIENT
INSERT

BIDIRECTIONAL SEAL

PHOENIX III METAL SEAL

VALVE
BODY

SEAL
RING

VALVE
BODY

SEAL RING

HUB SIDE
OF DISC

HIGH
PRESSURE
SHUTOFF

Figure 3. Maximum Pressure-Temperature Ratings

OPERATING TEMPERATURE,_C

PHOENIX III SEAL
WITH PTFE INSERT

PTFE AND
REINFORCED PTFE

UHMWPE
SEAL

A6306-2

Note:

Temperaturelimitationsdo not account for the additional limitations imposed by the backup ringused with this seal. To determine the effective temperature limitation of the appropriate

1

seal/backup ring combination,,refer to table 3.

OPERATING TEMPERATURE,_F

SEAL

5

Product Bulletin

21.1:A41
January 2013

A41 Valve

D500212X012

Table 2. Flow Coefficients

VALVE SIZE,

NPS

2
3
4
6

8
10
12

1. Refer to Fisher Catalog 12 for a complete listing of flow coefficients.

(1)

CvFORWARD FLOW WITH DISC W IDE OPEN (90 DEGREES ROTATION)

CL150 CL300

80.2
286
499

1250
2180
3600
5400

80.2
237
488

1110
2070
3480
5130

Table 3. Construction Material Temperature Limits

COMPONENTS AND MATERIALS OF CONSTRUCTION

Valve Body Material

Carbon Steel
S31600
S31700

Disc Material

316
CG8M

Shaft Material

S20910
17-4PH

Bearing Material

PEEK / PTFE lined
Metal

Packing Material

PTFE V-rings
Graphite rings

Seal Ring

PTFE (Standard) -46 to232 -50 to450

Reinforced PTFE Soft Seal Ring -46 to232 -50 to450

UHMWPE Soft Seal Ring -18 to93 0 to200

NOVEX MetalSealRing -46 to538 -50 to1000

NPS2MetalSealring -46 to538 -50 to1000

Phoenix III MetalSealRing

Fluorocarbon backup ring -40 to232 -40 to450

Phoenix III Fire-Te sted

Fluorocarbon backup ring

(Specify metal bearings and graphite packing)

1. For component selection and applicable fire-tested standardsand codes, consult yourEmerson Process Management sales office.

(1)

MetalSealRing

TEMPERATURE LIMITS

_C _F

-29 to427

-198 to538

-198 to538

-198 to538

-198 to538

-198 to538

-62 to427

-73 to260

-198 to538

-46 to232

-198 to438

(1) (1)

-20 to800

-325 to1000

-325 to1000

-325 to1000

-325 to1000

-325 to1000

-80 to800

-100 to500

-325 to1000

-50 to450

-325 to1000

6

A41 Valve

D500212X012

Figure 4. Flow Direction

Product Bulletin

21.1:A41

January 2013

RETAINER RING SIDE

MFG LABEL

FLOW ARROW

ARROW SHOWS PREFERRED FLOW DIRECTION FOR SOFT
SEALS AND NPS 2 METAL SEAL

FORWARD FLOW REVERSE FLOW

RETAINER RING SIDE

MFG LABEL

FLOW ARROW

ARROW SHOWS FLOW DIRECTION FOR NOVEX METAL SEAL,
ANDPREFERRED FLOW DIRECTION FORPHOENIX METAL SEAL

REVERSE
FLOW

FORWARD
FLOW

75B1181-A
A6881-2

Note:

1. By Emerson Process Management definition: Forward flow is into the face side of the disc. Reverse flow is into the hubside of the disc.

FACE SIDE OF DISC

7

Product Bulletin

21.1:A41
January 2013

A41 Valve

D500212X012

Installation

It is recommended that the valve drive shaft be
mounted in a horizontal position. Operating
conditions may require specific valve/actuator fail
action, styles, positions and flow direction. Valves with
NOVEX seal rings require mounting in the reverse flow
direction. Refer to figure 4. Large valve/actuator
assemblies may require additional support because of
the combined weight.

Fail Action: For actuators with spring returns, spring
fail action is available for: fail-to-open or fail-to-close
valveaction.Thevalveaction is field reversible.

For assistance in selecting the valve/actuator
mounting suited to your application, consult your
Emerson Process Management sales office.
Dimensions for wafer-style and single-flanged valves
are shown in figure 6.

8

A41 Valve

D500212X012

Figure 5. Packing Arrangements

Product Bulletin

21.1:A41

January 2013

PACKING
FOLLOWER

PTFE V-RING PACKING

PACKING FLANGE

SPRING PACK
ASSEMBLY

ANTI-EXTRUSION
RING

PACKING SET

PACKING SET

PACKING RING

PACKING BOX
RING

STANDARD PACKING

ENVIRO-SEAL PTFE PACKING SYSTEM

1

GRAPHITE RIBBON PACKING

PACKING FLANGE
NUT

LUBRICANT

PACKING FLANGE
STUD

PACKING BOX
RING

PACKING FLANGE

SPRING PACK
ASSEMBLY

PACKING SET

C0785*A

Note:

Includes zinc washers for graphite ribbon packing only.

1

PACKING FLANGE
NUT

LUBRICANT

PACKING FLANGE
STUD

PACKING BOX
RING

ENVIRO-SEAL GRAPHITE PACKING SYSTEM

9

Product Bulletin

21.1:A41
January 2013

Figure 6. Typical Valve Dimensions (also see tables 4 and 5)

A41 Valve

D500212X012

R

R

G

WAFER STYLE VALVE

G

K

K

E

E

Y-4 CLEARANCE
HOLES

S

FLAT
LENGTH

S

Y

G

R

K

E

S

SINGLE-FLANGE VALVE

A

FLAT SIZE

T

14B0818-D
14B0829-D
14B0830-D
B2437-2

18A3110-E
18A9075-C
A7082

NPS 12 CL300

W

WAFER-STYLE VALVE

U

TYPICAL VALVE MOUNTING

FLAT LENGTH

R

S

GKE

NPS 2 A41

WAFER STYLE VALVE

WTHD

F

T

A

10

Product Bulletin

A41 Valve

D500212X012

Table4.CL150ValveDimensions

Valve

Size,

NPS

A E

2 45 83 102 --- 102 --- 103 --- 9.50 25.4 79 --­3 48 83 70 79 121 73 133 189 12.7 9.50 25.4 83 19
4 54 83 86 102 124 97 171 219 15.9 11.07 25.4 83 19
6 57 83 121 129 152 146 219 273 19.1 14.25 25.4 95 25

8 64 83 155 157 181 191 272 333 25.4 17.45 25.4 95 25
10 71 89 186 198 229 238 330 406 31.8 20.60 25.4 133 38
12 81 89 222 230 254 284 387 476 38.1 25.37 38.1 133 38

2 1.78 3.25 4.00 --- 4.00 1.88 4.06 --- 1/2 0.374 1 3.12 --- 1/2-13 ---

3 1.88 3.25 2.75 3.12 4.00 2.88 5.25 7.44 1/2 0.374 1 3.25 0.75 3/8-16 5/8-11 4-holes

4 2.12 3.25 3.38 4.00 4.88 3.81 6.75 8.62 5/8 0.436 1 3.25 0.75 3/8-16 5/8-11 8-holes

6 2.25 3.25 4.75 5.06 6.00 5.75 8.62 10.75 3/4 0.561 1 3.75 1.00 1/2-13 3/4-10 8-holes

8 2.50 3.25 6.12 6.19 7.12 7.50 10.69 13.12 1 0.687 1 3.75 1.00 1/2-13 3/4-10 8-holes

10 2.81 3.50 7.31 7.81 9.00 9.38 13.00 16.00 1-1/4 0.811 1 5.25 1.50 5/8-11 7/8-912-holes

12 3.19 3.50 8.75 9.06 10.00 11.19 15.25 18.75 1-1/2 0.999 1.5 5.25 1.50 5/8-11 7/8-912-holes

1. This nominal valve shaft diameter is the shaft diameterthrough the packing box. Use this diameter when selecting Fisher actuators.

2. Disc chordal swing diameter at valve face. Please verify clearance with piping.

Wafer

Style

G

Flange

Single

(2)

K

M

Wafer

Style

R

Single

Flange

Inches

mm

Flat
Size

Flat

Length

T U W

See thread

information

below

(1)

S

21.1:A41

January 2013

Y

Single Flange

Only

---

See thread

information

below

Table5.CL300ValveDimensions

Valve

Size,

NPS

A E

2 45 83 102 --- 102 --- 103 --- 9.50 25.4 79 ---

3 48 83 89 95 119 73 132 206 15.7 11.07 25.4 83 19

4 54 83 114 121 146 97 162 238 19.0 14.25 25.4 95 25

6 59 83 146 152 178 145 221 308 25.4 17.45 25.4 95 25

8 73 89 175 183 210 188 276 375 31.8 20.60 25.4 133 38

10 83 89 232 229 243 233 330 438 38.1 25.37 38.1 133 38
12 92 89 308 308 279 278 389 508 44.4 28.55 38.1 146 38

2 1.78 3.25 4.00 --- 4.00 1.88 4.06 --- 1/2 0.374 1 3.12 --- 1/2-13 ---

3 1.88 3.25 3.50 3.75 4.69 2.88 5.19 8.12 5/8 0.436 1 3.25 0.75 3/8-16 3/4-10 8-holes

4 2.12 3.25 4.50 4.75 5.75 3.81 6.38 9.38 3/4 0.561 1 3.75 1.00 1/2-13 3/4-10 8-holes

6 2.31 3.25 5.75 6.00 7.00 5.69 8.69 12.12 1 0.687 1 3.75 1.00 1/2-13 3/4-10 12-holes

8 2.88 3.50 6.88 7.19 8.25 7.38 10.88 14.75 1-1/4 0.811 1 5.25 1.50 5/8-11 7/8-912-holes

10 3.25 3.50 9.12 9.00 9.56 9.19 13.00 17.25 1-1/2 0.999 1.5 5.25 1.50 5/8-11 1-816-holes

12 3.62 3.50 12.12 12.12 11.00 10.94 15.31 20.00 1-3/4 1.124 1.5 5.75 1.50 3/4-10 11/8-816-holes

1. This nominal valve shaft diameter is the shaft diameterthrough the packing box. Use this diameter when selecting Fisher actuators.

2. Disc chordal swing diameter at valve face. Please verify clearance with piping.

WaferS

tyle

G

Single

Flange

(2)

K

M

Wafer

Style

R

Flange

Single

Inches

mm

Flat
Size

Flat

Length

T U W

See thread

informationb

elow

(1)

S

Y

Single FlangeOnly

---

See thread

information below

11

Product Bulletin

21.1:A41
January 2013

A41 Valve

D500212X012

Neither Emerson, Emerson Process Man agement, nor any of their affiliated entities assumes responsibility for the selection, use or maintenance
of anyproduct. Responsibility for proper selection, use, and maintenance of any product remains solely withthe purchaserand end user.

Fisher and ENVIRO-SEAL are marks owned by one of the companies in the Emerson Process Management business unitof EmersonElectric Co.Emerson
Process Management, 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 arenot
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 availableupon request. We reserve the right to modify or improve the designs or specificationsof such
products at any time without notice.

Emerson Process Management
Marshalltown, Iowa 50158 USA
Sorocaba, 18087 Brazil
Chatham, Kent ME4 4QZ UK
Dubai, United Arab Emirates
Singapore 128461 Singapore

www.Fisher.com

E 1991, 2013 Fisher Controls International LLC. All rightsreserved.

12