Fisher Design RSS User manual

D101299X012
Design RSS Lined Valve
Contents
Introduction 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Scope of Manual 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Description 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Specifications 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Maintenance 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Packing Maintenance 5. . . . . . . . . . . . . . . . . . . . . . . . .
Replacing Packing and Bushing Inserts 5. . . . . . . . .
Trim Maintenance 7. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Disassembly 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Assembly 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Parts Ordering 9. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Parts List 11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Introduction
Scope of Manual
This instruction manual includes installation, mainte-
nance, and parts information for 1/2- through 4-inch
Design RSS lined globe valves. Refer to separate
manuals for instructions covering the actuator, posi-
tioner, and accessories.
Description
The Design RSS lined globe-style valve (figure 1) has
pure-modified PTFE trim parts, push-down-to-close
action, and positive shutoff. This valve is intended for
applications involving severely corrosive and toxic
flowing media. The Design RSS valve body provides
an economical alternative to alloy valve bodies in a
wide variety of applications.
Only personnel qualified through training or experience
should install, operate, and maintain this control valve.
Figure1. Design RSS Valve with Type667Actuator
andType3582Positioner
W4453–1 / IL
If you have any questions concerning these instruc-
tions, contact your Fisher Controls sales office or
sales representative before proceeding.
Specifications
Specifications for the Design RSS valve are shown in
table 1. If the valve is shipped with the actuator, some
of the valve specifications are on the valve nameplate,
which is attached to the actuator. If the valve is
shipped without the actuator, the valve nameplate is
wired to the valve.
Instruction Manual
Form 5592
January 1999 Design RSS

Design RSS
2
Table1. Specifications
Valve Sizes
1/2, 3/4, 1, 1-1/2, 2, 3, and 4 inches
Face-To-Face and Flange Compatibility
DUCTILE IRON STEEL SST
VALVE Flange
VALVE
SIZE, Class 150 Class 300 Class 150 Class 150
SIZE,
IN. Face-To-Face
ANSI(1) DIN(2) ANSI(1) DIN(2) ANSI(1) DIN(2) ANSI(1) DIN(2)
1/2
3/4
1
1-1/2
2
3
4
- - -
- - -
X
X
X
X
X
X
X
X
X
X
X
X
- - -
- - -
X
X
X
- - -
- - -
- - -
- - -
X
- - -
- - -
- - -
- - -
- - -
- - -
- - -
- - -
- - -
- - -
X
X
X
X
X
X
X
X
- - -
- - -
- - -
- - -
- - -
- - -
X
X
X
X
X
X
X
X
1. For ANSI/ISA face-to-face dimensions, see figure 3.
2. For DIN face-to-face dimensions, see figure 3.
Maximum Inlet Pressures and Temperatures(1)
See tables 2 and 3
Downstream/Outlet Pressure Ratings(1)
See figure 2
Application Limits
Liquid Service: nP/P1abs 0.6. For cavitating
applications, contact your Fisher Controls sales of-
fice or sales representative.
Gas Service: Velocity 0.33 MACH
Shutoff Classification
Class VI per ANSI/FCI 70-2
Temperature Capabilities
Pressure Service: –20 to 350_F (–29 to 177_C)
Vacuum Service: –20 to 200_F (–29 to 93_C)
Standard Flow Characteristic/Valve Plug Style
Equal percentage
Flow Direction
Up through the seat ring (see figure 7)
Packing Arrangement
Braided PTFE rings
Dimensions and Weights
See figure 3
1. The pressure or temperature limits in this manual, and any applicable standard limitations should not be exceeded.
Table 2. Maximum Allowable Inlet Pressures and
Temperatures
(1)
PRESSURE, PSIG PRESSURE, BAR
TEMPER-
ATURE, _F
Ductile
Iron
or
Steel
Valve
Stainless
Steel
Valve
TEMPER-
ATURE, _C
Ductile
Iron
or
Steel
Valve
Stainless
Steel
Valve
–20 to 100
200
300
350
285
260
230
215
275
235
205
192
–29 to 38
93
149
177
19.7
17.9
15.9
14.8
19.1
16.3
14.2
13.3
1. Includes valves with Class 300 flanges.
Table3. Maximum Shutoff Pressure Drop
Temperature _FPressure, PSI Temperature _CPressure,BAR
–20 to 250
300
350
145
125
93
–29 to 121
149
177
10.0
8.6
6.4

Design RSS
3
Figure2. Downstream/Outlet Pressure Ratings
A6889-1 / IL
68 122 212 302 356 F
68 122 212 302 356 F
PFA LINING
PFA LINING
Installation
WARNING
Personal injury or equipment damage
caused by sudden release of pressure
can result if the valve is installed where
service conditions could exceed the lim-
its given on the nameplate or in table 1
or 2, or figure 2. To avoid such injury or
damage, use pressure-limiting or pres-
sure-relieving devices to prevent service
conditions from exceeding these limits.
CAUTION
When ordered, the valve configuration
and construction materials are selected
to meet particular pressure, tempera-
ture, pressure drop, and controlled fluid
conditions. Since some valve body/trim
material combinations are limited in
their pressure drop and temperature
ranges, do not apply any other condi-
tions to the valve without first contact-
ing your Fisher Controls sales office or
sales representative.

Figure3. Dimensions and Weights
MATCH LINE
FOR ACTUATOR
10B4744–G
A5216-1 / IL
Design RSS
4
DIN FACE-TO-FACE DIMENSIONS
MATING WITH ANSI CLASS 150 FLANGES
Valve Dimensions Approximate
Valve
Size A B D EO
Approximate
Weight
Inches Inches Pounds
1/2
3/4
1
1-1/2
2
3
4
5.12
5.12
6.30
7.88
9.06
12.20
13.78
2.36
2.36
2.83
3.38
3.82
5.04
6.94
5.57
5.57
7.83
8.66
8.98
13.00
13.39
3.50
3.86
4.53
5.91
6.50
7.87
8.66
13
13
23
38
43
86
92
Inches mm kg
1/2
3/4
1
1-1/2
2
3
4
130.0
130.0
160.0
200.0
230.0
310.0
350.0
60.0
60.0
72.0
86.0
97.0
128.0
176.0
141.5
141.5
199.0
220.0
228.0
330.0
340.0
89.0
98.0
115.0
150.0
165.0
200.0
220.0
6
6
11
17
20
39
42
ANSI/ISA CLASS 150 FACE-TO-FACE DIMENSIONS
MATING WITH ANSI CLASS 150 FLANGES
Valve Dimensions Approximate
Valve
Size A B D EO
Approximate
Weight
Inches Inches Pounds
1
1-1/2
2
3
4
7.25
8.75
10.00
11.75
13.78
3.27
3.82
4.21
4.76
6.94
7.83
8.66
8.98
13.00
13.39
4.25
5.00
6.00
7.50
8.66
23
36
43
86
92
Inches mm kg
1
1-1/2
2
3
4
184.0
222.0
254.0
298.0
350.0
83.0
97.0
107.0
121.0
176.0
199.0
220.0
228.0
330.0
340.0
108.0
127.0
152.4
190.5
220.0
10
17
20
39
42
ANSI/ISA CLASS 300 FACE-TO-FACE DIMENSIONS
MATING WITH ANSI CLASS 300 FLANGES
Valve Dimensions Approximate
Valve
Size A B D EO
Approximate
Weight
Inches Inches Pounds
1
1-1/2
2
7.75
9.25
10.50
3.54
3.97
4.53
7.83
8.66
8.98
4.87
6.14
6.50
25
40
45
Inches mm kg
1
1-1/2
2
197.0
235.0
267.0
90.0
101.0
115.0
199.0
220.0
228.0
123.8
156.0
165.0
11
18
20
1. Before installing the valve, inspect it to be certain
that the valve cavity is free of foreign material. Use
extra care in handling to avoid damage to the exposed
lining on the flanges. Clean out all pipelines to remove
scale, welding slag, and any other foreign materials
that could cause erosion of the valve body lining.
2. The control valve assembly should be installed in a
horizontal pipeline with the valve stem in a vertical
position. Before installing in any other orientation, con-
sult your Fisher Controls sales office or sales repre-
sentative.
Flow through the valve must be in the direction indi-
cated by the arrow cast on the valve (figure 7).
3. Use accepted piping practices when installing the
valve in the pipeline. For a 1/2-inch valve only, use the
line flange cap screws (key 18, not shown) provided
rather than using through bolting. To minimize valve
damage caused by expansion of PTFE lined pipe, use
a line flange gasket (figure 4). This gasket evenly dis-
tributes the piping loads across the valve flange face
and minimizes the potential for cutting or indenting the
lined face on the valve flange.
4. With a leak-off bonnet construction, remove the
pipe plug (key 20, not shown) and install the leak-off
piping into the tapping in the bonnet (key 2, figure 9).
5. If continuous operation is required during inspec-
tion or maintenance, install a three-way bypass around
the control valve assembly.
6. For a valve used with a fail-closed actuator, re-
move the shim (key 24, not shown) from between the
bonnet and the travel stop. Discard the shim.

Design RSS
5
Figure4. Typical Line Flange Gasket (Key 18)
PTFE
COMPOSITION
STAINLESS STEEL
 
10B3224–C
A5039 / IL
7. If the actuator and valve are shipped separately,
refer to the appropriate actuator instruction manual for
the actuator mounting procedure.
Maintenance
Valve parts are subject to normal wear and must be
inspected and replaced as necessary. Inspection and
maintenance frequency depends on the severity of
service conditions. This section includes instructions
for packing and trim replacement. All these mainte-
nance operations may be performed with the valve in
the line.
Due to the care Fisher Controls takes in meeting all
manufacturing requirements (heat treating, dimension-
al tolerances, etc.), use only replacement parts sup-
plied by Fisher Controls.
WARNING
Avoid personal injury or property dam-
age from sudden release of process
pressure or bursting of parts. Before
performing any maintenance opera-
tions:
DDisconnect any operating lines pro-
viding air pressure, electric power, or a
control 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 power 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.
Note
Whenever a line flange gasket (figure 4)
seal is disturbed by removing the valve
from the line, install a new gasket on
reassembly. This is necessary to ensure
a good gasket seal.
Packing Maintenance
Key numbers are shown in figure 9.
The packing consists of braided packing rings (key
13). The packing box is only a safety measure in case
of a leak through the bellows (key 6). Therefore, the
packing follower (key 11) is tightened to 10 lbfSin (1.13
NSm) of torque and then loosened one half turn. To
detect a leak through the bellows (key 6), the bonnet
(key 2) can be provided with a connection for leak-off
piping.
Replacing Packing and Bushing Inserts
Key numbers are shown in figure 9.
1. Isolate the control valve from the line pressure. Re-
lease pressure from both sides of the valve and drain
the process media from both sides of the valve.
2. Exhaust all actuator pressure, and disconnect the
operating lines from the actuator and any leak-off pip-
ing from the bonnet (key 2). Disconnect the actuator
stem connector, and then remove the actuator from
the valve by unscrewing the yoke locknut (key 14).
3. Remove any travel indicator parts, the locknut (key
10), and the travel stop (key 16) from the valve stem
(key 5) threads.
4. Remove the packing follower (key 11). Unscrew
the cap screws (key 7) and hex nuts (key 8) that se-
cure the bonnet (key 2) to the valve (key 1). Then,
carefully lift the bonnet off and set it on a protective
surface to prevent damage to the bonnet sealing sur-
face. If the valve stem, bellows, and valve plug (keys
5, 6, and 3) come out with the bonnet, remove these
parts from the bonnet. For metal bellows, remove the
gasket (key 27). For 1/2- and 3/4-inch sizes, remove
the O-ring (key 30) from the bonnet.

Design RSS
6
Figure5. Bonnet, Travel Stop, and Seat Ring Installation Detail
40B4190–D
B1972–1/ IL
40B4191–E
SEAT RING
CONTACT SURFACE
SEAT RING
SEALING LEDGE
VALVE
PLUG
(KEY 3)
BELLOWS
(KEY 6)
EQUAL AT ALL
BOLTING LOCATIONS
BONNET
(KEY 2)
0.020 INCH
(0.5 mm) GAP
TRAVEL STOP
(KEY 16)
VALVE
STEM
(KEY 5)
LOCKNUT
(KEY 10)
YOKE
LOCKNUT
(KEY 14)
BONNET
LOCATING
DIAMETER
5. Remove bushing inserts, packing rings, and pack-
ing box ring (keys 13, 12, 28, 29).
6. Clean the packing box, packing box ring, and pack-
ing follower.
7. Inspect the valve stem and packing box surfaces
for any sharp edges that might cut the packing.
Scratches or burrs could damage new packing or
cause packing box leakage. If the surface condition
cannot be improved by light sanding, replace the dam-
aged parts.
8. Install bushing inserts (keys 28 and 29). For metal
bellows, install the gasket (key 27), for 1/2- and
3/4-inch sizes, install the O-ring (key 30) in the bonnet.
9. Install the bonnet (key 2) over the valve stem (key
5). Slide the bonnet down until it properly engages the
bonnet locating diameter (figure 5) of the valve.
Note
In order to ensure accurate positioning
of the valve plug (key 3) and seat ring
(key 4), clearance between the valve and
bonnet at all bolting locations (figure 5)
must be equal and approximately 0.060
inches (1.5 mm) for 1/2- and 3/4-inch
sizes valves and 0.080 inches (2.0 mm)
for 1- through 4-inch sizes valves. Be
sure to measure the clearance in the
next step.

Design RSS
7
Figure 6. Typical Locking Rope Installation
WITH LOCKING ROPE PARTIALLY REMOVED WITH LOCKING ROPE INSTALLED
W4471 / IL W4472 / IL
10. Tighten the cap screws and hex nuts (keys 7 and
8) in a crisscross pattern to a maximum torque value
of 37 lbfSft (50 NSm). To ensure accurate positioning of
the valve plug (key 3) into the seat ring (key 4), check
the gap between the valve and bonnet with a feeler
gauge (figure 5). At all bolting locations, the gap must
be equal and approximately J0.060 inches (1.5 mm)
for 1/2- and 3/4-inch valves or J0.080 inches (2.0
mm) for 1- through 4-inch valves. In order to keep the
gap equal, the individual bolts may have to be tight-
ened to different torque levels.
Note
Due to the cold flowing tendency of the
valve liner, this procedure should be re-
peated upon installation and after the
first thermal cycle of the valve.
11. Install the packing rings, packing box ring, and
packing follower (keys 13, 12, and 11) over the valve
stem. Tighten the packing follower to 10 lbfSin (1.13
NSm) of torque to insure the packing rings are seated.
After the packing rings are seated, loosen the packing
follower one half turn.
12. Manually press the valve stem (key 5) into the
valve until the valve plug contacts the seat ring.
CAUTION
Improper adjustment in step 13 might
cause damage to trim parts. Perform
this step carefully.
13. Thread the travel stop (key 16) onto the valve
stem until there is a 0.020 inch (0.5 mm) gap between
the bottom surface of the travel stop legs and the top
of the bonnet (figure 5).
14. Thread the locknut (key 10) onto the stem and
tighten it against the travel stop.
15. Mount the actuator and secure it with the yoke
locknut (key 14). Connect the actuator stem and valve
stem according to the procedure in the appropriate
actuator instruction manual.
Trim Maintenance
Key numbers are shown in figure 9.
Disassembly
1. Remove the actuator and the bonnet as described
in steps 1 through 4 of the Replacing Packing and
Bushing Inserts section.
2. Inspect parts for wear or damage that would pre-
vent proper operation of the valve.
3. To replace the bellows (key 6), unscrew the valve
stem (key 5) in a counterclockwise rotation. Install the
valve stem into the new bellows with a clockwise rota-
tion by hand. Do not overtighten.
4. To remove the valve plug (key 3), use pliers to re-
move the locking rope (key 9) that locks the valve plug
to the bellows (key 6) as shown in figure 6. Then un-
screw the plug from the bellows.

Design RSS
8
Figure7. Design RSS Valve Body Shown with Tool
Used to Remove or Install Seat Ring
W4473 / IL
SEAT
RING
SEAT
RING
TOOL
Note
To avoid cold flow of the valve liner and
deforming of the valve body seat ring
threads and seat ring contact surfaces,
promptly install a replacement seat ring
according to step 1 of the Assembly
procedures.
5. To remove the seat ring (key 4), use the seat ring
tool (figure 7 or 8) that can be ordered from the Parts
List section or made according to the dimensions in
figure 8 and table 4. To avoid cold flow of the valve
liner and deforming of the valve body seat ring threads
and seat ring contact surfaces, promptly install a re-
placement seat ring according to step 1 of the Assem-
bly procedures.
Assembly
CAUTION
To avoid damage to the seat ring seal-
ing surface and/or threads in the valve
body liner, make or order the seat ring
tool shown in figures 7 and 8. Installing
the seat ring using other tools might
cause permanent damage to the seat
ring sealing surface and/or threads al-
lowing excessive leakage of the valve.
Table4. Seat Ring Tool Dimensions
VALVE
SIZE
DIMENSIONS(INCHES)
SIZE,
INCHES AOBOCOD E F G
1/2, 3/4 0.781
0.791 1.187 1.197 1.390 1.359 1/4 3/16 0.156 0.150 7-1/2
11.453
1.463 1.859 1.869 2.156 2.187 1/4 3/16 0.312 0.300 7-1/2
1-1/2 2.125
2.135 2.515 2.525 2.828 2.859 9/32 7/32 0.312 0.300 8-3/4
22.562
2.572 3.000 3.010 3.296 3.328 9/32 7/32 0.312 0.300 8-3/4
33.593
3.603 4.093 4.103 4.406 4.437 9/32 7/32 0.312 0.300 11-7/8
44.171
4.181 4.656 4.666 4.968 5.000 9/32 7/32 0.312 0.300 11-7/8
VALVE
SIZE
DIMENSIONS (MILLIMETERS)
SIZE,
INCHES AOBOCOD E F G
1/2, 3/4 19.84
20.09 30.15 30.40 35.31 34.52 6.35 4.76 3.96 3.81 190.50
136.91
37.16 47.22 47.47 54.76 55.55 6.35 4.76 7.92 7.62 190.50
1-1/2 53.98
54.23 63.88 64.13 71.83 72.62 7.14 5.55 7.92 7.62 222.25
265.07
65.33 76.20 76.45 83.72 84.53 7.14 5.55 7.92 7.62 222.25
391.26
91.52 103.7 104.2 111.91 112.70 7.14 5.55 7.92 7.62 222.25
4105.94
106.20 118.2 118.5 126.19 127.00 7.14 5.55 7.92 7.62 222.25
Figure 8. Seat Ring Tool
A3520–1/ IL

Design RSS
9
Table5.Recommended Seat RingTorque
Valve Size,
Inches Pound-Force Inches Pound-Force Feet Newton Meters
1/2
3/4
1
1-1/2
27
27
71
- - -
- - -
- - -
- - -
17
3
3
8
23
2
3
4
- - -
- - -
- - -
22
37
37
30
50
50
1. Install the seat ring (key 4) with the seat ring tool
(figure 7 or 8) that can be ordered from the Parts List
or made according to the dimensions in table 3 and
figure 8. Tighten the seat ring until contact is felt be-
tween the sealing ledge of the seat ring and its mating
surface in the valve (figure 5). At this point, tighten the
seat ring one quarter turn or to the torque values listed
in table 5.
2. To install the valve plug (key 3), screw the valve
plug onto the bellows and insert the locking rope with
pliers (figure 6).
3. Install the assembled valve plug, bellows, and
valve stem (keys 3, 6, and 5). For metal bellows,
install the gasket (key 27).
4. Install the bonnet according to steps 9 and 10 of
the Replacing Packing and Bushing Inserts procedure.
5. Tighten the packing follower (key 11) to 10 lbfSin
(1.13 NSm) of torque to ensure the packing rings are
seated. After the packing rings are seated loosen the
packing follower one half turn.
6. Perform steps 12 through 15 of the Replacing
Packing and Bushing Inserts section.
Parts Ordering
Each valve body-bonnet assembly is assigned a serial
number, which can be found on the valve nameplate.
Refer to this serial number when contacting your Fish-
er Controls sales office or sales representative for
technical assistance. If the valve is shipped with the
actuator, the valve nameplate is attached to the actua-
tor. If the valve is shipped without the actuator, the
valve nameplate is wired to the valve. When ordering
replacement parts, refer to this serial number and to
the part number from the following Parts List .
Ordering valve plug assemblies for 1/2- through
2-inch valves with 5/16-inch (8 mm) diameter or
larger ports:
Original design valve plugs slip onto the end of the
bellows, whereas the new design valve plugs thread
onto the end of the bellows. The new bellows part
numbers in the Parts List section are acceptable for
either plug design, and both designs use the locking
rope (key 9). When ordering a replacement valve plug
assembly, determine if it slips on or threads on the
bellows and choose the appropriate part number. If
you need assistance, contact your Fisher Controls
sales office or sales representative. Be sure to provide
your valve serial number.
Ordering 3/16-inch (5 mm) port diameter trim
parts:
The bellows, valve plug assembly, and seat ring (keys
3, 4, and 6) for the original trim design are not inter-
changeable with the new design (see figure 10). If
changing the valve to the new design parts, use a new
design bellows, valve plug assembly, and seat ring.
Both new and original design parts are available (see
the Parts List ). If you need assistance, contact your
Fisher Controls sales office or sales representative.
Be sure to provide your valve serial number.

Design RSS
10
Figure9. Design RSS ValveAssembly
SEE VIEW A
SEE VIEW B
NOTE: KEYS 17, 18, 19, 20, 21, 22,
23, 24, 25, 26, AND 30 ARE NOT SHOWN
VIEW A
VIEW B
COMPLETE BODY ASSEMBLY
WITH STANDARD BELLOWS
DETAIL OF BONNET
FOR 3 AND 4-INCH VALVES
DETAIL OF HEAVY DUTY
PTFE BELLOWS CONSTRUCTION
40B4191–E/ IL
40B4191–E / IL
A3598–3 / IL
BELLOWS
BELLOWS
RETAINER
LOCKING
ROPE
VALVE
PLUG
DETAIL OF 3- AND 4-INCH UĆPLUG

Design RSS
11
Figure10. Original and New Valve Plug and Seat Ring Design
BELLOWS
(KEY 6)
LOCKING
ROPE (KEY 9)
VALVE PLUG
ASSEMBLY (KEY 3)
SEAT RING
(KEY 4)
ORIGINAL DESIGN NEW DESIGN
3/16-INCH (5 mm) PORT TRIM
1
1
NOTES:
ORIGINAL AND NEW DESIGN PARTS ARE NOT INTERCHANGEABLE.
SEE PARTS ORDERING SECTION FOR DETAILS.
1
A5243 / IL
Parts List
Key Description Part Number
Note
Except where indicated, sizes shown are valve body
sizes.
1 Valve Body or valve body/ring assembly
If you need a valve body or valve body/ring assembly as a
replacement part, order by valve size, serial number, and
desired material.
2 Bonnet/Bushing Assembly
If you need a bonnet/bushing assembly as a replacement
part, order by valve size and stem diameter, serial number,
and desired material.
3* Valve Plug See following table
4* Seat Ring See following table
5* Valve Stem
Stainless steel
1/2 & 3/4-inch 21B7542X012
1-inch 21B7543X012
1-1/2 & 2-inch 21B7544X012
3 & 4-inch 20B2511X012
N06455 [Hastelloy C4] nickel alloy
1/2 & 3/4-inch 21B7542X022
1-inch 21B7543X022
1-1/2 & 2-inch 21B7544X022
3 & 4-inch 20B2511X022
6* Bellows See following table
7 Cap Screw See following table
7 Stud See following table
Key Description Part Number
8 Hex Nut See following table
9* Locking Rope, PTFE
1/2 & 3/4-inch 20B2519X012
1, 1-1/2, & 2-inch 20B2519X022
3 & 4-inch 20B2519X032
10 Locknut
S31600 stainless steel
1/2, 3/4, 1, 1-1/2, & 2-inch 1A680335252
3 & 4-inch 1A353735252
N10276 (Hastelloy C276) nickel alloy
1/2, 3/4, 1, 1-1/2, & 2-inch 1A6803X0012
3 & 4-inch 1A3537X0012
11 Packing Follower
Stainless steel
1/2 & 3/4-inch 20B2497X012
1, 1-1/2, 2, 3, & 4-inch 20B2498X012
N06455 nickel alloy
1/2 & 3/4-inch 20B2497X032
1, 1-1/2, 2, 3, & 4-inch 20B2498X032
12* Packing Box Ring
Stainless steel
1/2 & 3/4-inch 20B2496X012
1, 1-1/2, 2, 3, & 4-inch 20B2495X012
N06455 nickel alloy
1/2 & 3/4-inch 20B2496X032
1, 1-1/2, 2, 3, & 4-inch 20B2495X032
13* Packing Ring, PTFE
1/2 & 3/4-inch (2 req’d) 20B2503X012
1, 1-1/2, & 2-inch (2 req’d) 20B2504X012
3 & 4-inch (3 req’d) 20B2504X012
14 Yoke Locknut, steel
1/2, 3/4, 1, 1-1/2, & 2-inch 1E7930X0032
3 & 4-inch 1E8074X0042
*Recommended spare parts

Design RSS
12
Key Description Part Number
16 Travel Stop
Stainless steel
1/2, 3/4, 1, 1-1/2, & 2-inch 20B2500X032
3 & 4-inch 20B2499X032
N06455 nickel alloy
1/2, 3/4, 1, 1-1/2, & 2-inch 20B2500X022
3 & 4-inch 20B2499X022
17* Line Flange Gasket (for use only if specified, see figure 4),
PTFE/composition/stainless steel (2 req’d)
For ANSI Class 150
1/2-inch 10B3221X022
3/4-inch 10B3222X022
1-inch 10B3223X022
1-1/2 inch 10B3224X022
2-inch 10B3225X022
3-inch 10B3226X022
4-inch 10B3227X022
For ANSI Class 300
1-inch 11B5886X022
1-1/2 inch 11B5887X022
2-inch 11B5888X022
18 Line Flange Cap Screws (for 1/2-inch use only,
not shown, 8 req’d)
SA-193-B7 steel 10B3229X012
SA-193-B7M steel 10B3229X022
19 Nameplate, stainless steel 11B2686X0A2
20 Pipe Plug (for use w/tapped bonnet only--not shown)
For ductile iron or steel bonnet 1E823128982
For stainless steel bonnet 1E8231X0012
Key Description Part Number
21 Seat Ring Tool (for use only if
specified--see figure 7 or 8), steel
1/2 & 3/4-inch 20B4538X012
1-inch 20B4539X012
1-1/2 inch 20B4540X012
2-inch 20B4541X012
3-inch 20B4542X012
4-inch 20B4543X012
22 Nameplate Seal & Wire (not shown), lead 1D884799012
24* Shim (for use only w/fail-to-close actuator--
not shown), aluminum 10B4192X012
25 Identification Plate, stainless steel (not shown) 10B4544X012
26 Drive Screw, stainless steel 1A368228982
27* Gasket, (use with N10276 bellows only),
PTFE
1/2 & 3/4-inch 21B2442X012
1-inch 20B5525X012
1-1/2 & 2-inch 21B2443X012
3 & 4-inch 21B2444X012
28* Bushing Insert, Carbon-filled PTFE
1/2 & 3/4-inch 21B9345X022
1, 1-1/2, & 2-inch 21B9345X042
3 & 4-inch (2 req’d) 21B9345X032
29* Bushing Insert, Carbon-filled PTFE
1/2 & 3/4-inch 21B9345X012
1, 1-1/2, & 2-inch 21B9345X022
30* O-ring, (1/2 & 3/4-inch only)
Fluoroelastomer 16A1178X022
Key 3* Valve Plug for 3/16-inch (5 mm) Port Diameter (Includes Locking Rope, Key 9)
ORIGINAL DESIGN(1) NEW DESIGN(1)
VALVE
SIZE
FLOW
CAPACITY
Glass-Filled Carbon-Filled
PTFE, TFM1600 Cap/
Alloy C4 Tip PTFE, TFM1600 Cap/ Tantalum Tip
SIZE,
INCHES
CAPACITY
Cv
Glass
-
Filled
PTFE Cap/
Carbon
-
Filled
PTFE Cap/ Travel Travel
INCHES
C
v
PTFE
Cap/
N06455 Tip
PTFE
Cap/
N06455 Tip 5/8 In (16 mm)
(H.D. Bellows) 3/4 In (19 mm) 5/8 In (16 mm) (H.D. Bellows) 3/4 In (19 mm)
0.965 20B5965X022 20B5965X032 - - - 21B9622X132 - - - 21B9622X142
1/2, 3/4 0.462 21B4033X022 21B4033X032 - - - 21B9623X112 - - - 21B9623X122
1/2,
3/4
0.212 21B4032X022 21B4032X032 - - - 21B9624X112 - - - 21B9624X122
1.02 20B5968X022 20B5968X032 23B9213X022 21B9622X152 23B9213X042 21B9622X162
10.462 21B4035X022 21B4035X032 23B9215X022 21B9623X132 23B9215X042 21B9623X142
1
0.212 21B4034X022 21B4034X032 23B9214X022 21B9624X132 23B9214X042 21B9624X142
1. See Parts Ordering section.
*Recommended spare parts

Design RSS
13
Key 3* Valve Plug for 5/16- through 4-inch (8 through 96 mm) Port Diameters (Includes Locking Rope, Key 9)
VALVE
SIZE
PORT
DIAMETER(1)
ORIGINAL SLIP-ON DESIGN(2) THREADED-ONDESIGN(2)
SIZE, DIAMETER
(1)
Glass-Filled
Carbon-Filled
SIZE
,
INCHES Inches mm
Gl
ass-
Fill
e
d
PTFE
C
ar
b
on-
Fill
e
d
PTFE PTFE, TFM1600
1/2, 3/4 5/16
1/2 8 12 20B5966X032 20B2490X032 20B5966X042 20B2490X042 21B9626X062 21B9625X062
1
5/16
1/2
3/4
1
8
12
20
25
20B5969X032
20B5970X032
20B5971X032
20B2489X032
20B5969X042
20B5970X042
20B5971X042
20B2489X042
21B9630X062(3)
23B9209X022(4)
21B9629X062(3)
23B9208X022(4)
21B9628X072(3)
23B9207X022(4)
21B9627X062(3)
23B9206X022(4)
1-1/2 1
1-1/2 25 40 20B5974X032 20B2488X032 20B5974X042 20B2488X042 21B9632X062 21B9631X062
21-3/16
230 50 20B5978X032 20B2487X032 20B5978X042 20B2487X042 21B9634X062 21B9633X062
32
3-3/16 50 80 - - - - - - - - - - - - 22B0701X062 22B0434X062
42-1/2
465 96 - - - - - - - - - - - - 22B0702X062 21B5680X062
1. Inch equivalents of these metric port diameters have been rounded to common fractional diameters. Actual diameter of the 15 millimeter port is 0.591 inches, of the 40 millimeter
port is 1.575 inches, and of the 96 millimeter port is 3.780 inches.
2. See Parts Ordering section.
3. 1-inch valve size with 3/4 inch travel.
4. 1-inch valve size with 5/8 inch travel.
Key 4* Seat Ring
VALVE
SIZE
PORT
DIAMETER(
1
)
MATERIAL
SIZE,
DIAMETER(1)
SIZE
,
INCHES Inches mm PTFE, TFM1600
1/2, 3/4 5/16
1/2 8 15 21B5517X032 21B5518X032
1
5/16
1/2
3/4
1
8
15
20
25
20B4169X032
20B4170X042
20B4172X042
20B2509X032
1-1/2 1
1-1/2 25 40 20B4174X032 20B2508X032
21-3/16
230 50 20B4164X032 20B2507X032
32
3-3/16 50 80 20B4159X032 20B2506X032
42-1/2
465 96 20B4157X032 20B2505X032
Original Design (See
Glass-Filled PTFE
Carbon-Filled PTFE
Original
Design
(See
Parts Ordering Section) Glass-Filled PTFE Carbon-Filled PTFE
1/2, 3/4 3/16 5 21B5516X012 21B5516X022
1 3/16 5 20B4168X012 20B4168X022
New Design (See Parts
PTFE TFM1600
New
Design
(See
Parts
Ordering Section) PTFE, TFM1600
1/2 3/16 5 21B9619X032
3/4 3/16 5 21B9619X012
1 3/16 5 21B9621X032
1. Inch equivalents of these metric port diameters have been rounded to common
fractional diameters. Actual diameter of the 15 millimeter port is 0.591 inches, of the
40 millimeter port is 1.575 inches, and of the 96 millimeter port is 3.780 inches.
*Recommended spare parts

Design RSS
14
Key 6* Bellows, New Design(1)
VALVE
PORT
MATERIAL
VALVE
SIZE, PORT
DIAMETER
PTFE
N10276 Nickel Alloy
SIZE,
INCHES
DIAMETER
Standard HeavyDuty N10276 Nickel Alloy
1/2 and 3/4 All(2) 20B2491X052 - - - 21B2445X022
1 All(2) 20B2494X052 23B9210X012 20B5526X022
1-1/2 and 2 All 20B2493X052 23B9211X012 21B2447X022
3 and 4 All 20B2492X032 23B9212X012 21B2448X012
1. See Parts Ordering section.
2. For original design 3/16 (5 mm) port trim, see the following table.
Key 6* Bellows for Original Design(1) 3/16 (5 mm) Port Trim
VALVE MATERIAL
VALVE
SIZE, PTFE
N10276 Nickel Alloy
SIZE,
INCHES Standard HeavyDuty N10276 Nickel Alloy
1/2, 3/4 20B5987X032 - - - 21B3752X012
1 20B5988X032 21B4701X032 21B2446X012
1. See Parts Ordering section.
Key 7 Cap Screw(1)
Key 7 Stud(1)
Key 8 Hex Nut(1)
MATERIAL
VALVE SIZE, PARTNUMBER
MATERIAL
VALVE
SIZE
,
INCHES Cap Screw (Key 7) Hex Nut (Key 8)
Stainless steel 1/2, 3/4
1, 1-1/2, 2, 3 1A3445X0012 1A3615X0012 1A375335252 1A341235252
SB-574-C276 1/2, 3/4
1, 1-1/2, 2, 3 1A344540152 1A3615X0062 1A3753X0062 1A341240152
MATERIAL VALVE SIZE,
INCHES Stud (Key 7) Hex Nut (Key 8)
Stainless steel 4 1A3788X0032 1A341235252
SB-574-C276 4 1A3788X0032 1A341240152
1. For valve body sizes 1/2 through 2-inch, 4 cap screws and nuts are required, for 3-inch valve bodies, 8 cap screws and nuts are required, and for 4-inch valve bodies, 8 studs and
nuts are required.
*Recommended spare parts
For information, contact Fisher Controls:
Marshalltown, Iowa 50158 USA
Cernay68700 France
Sao Paulo 05424 Brazil
Singapore128461
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Printed in U.S.A.
EFisher Controls International, Inc. 1986, 1999; All Rights Reserved
Fisher, Fisher-Rosemount, and Managing The Process Better are marks owned by Fisher Controls International, Inc. or Fisher-Rosemount Systems, Inc.
All other marks are the property of their respective owners.