Instruction Manual
D103528X012
Fisherr 1261-R and 1261-E
Self-Operated Control Valves
1261-R and 1261-E Valves
November 2012
Contents
Introduction 1.................................
Scope of Manual 1.............................
Description 2.................................
Specifications 2...............................
Installation 4..................................
Maintenance 5.................................
Packing Maintenance 6........................
Replacing Packing 7...........................
Trim Maintenance 9...........................
Parts Ordering 10...............................
Parts List 11...................................
Figure 1. Fisher 1261-R Pressure-Reducing Valve
Introduction
Scope of Manual
This instruction manual provides installation, adjustment, maintenance, and parts information for the Fisher 1261-R
and 1261-E Self-Operated control valves. Refer to separate instruction manuals for more information about the valve.
ThevalvebodyassemblyofthesevalvesarethesameasthevalvebodyassemblyforFisher1100controlvalves.
Do not install, operate, or maintain 1261-R or 1261-E 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.
www.Fisher.com
1261-R and 1261-E Valves
November 2012
Table 1. Specifications
Instruction Manual
D103528X012
End Connection Styles
Flanged: CL150 RF and CL300 RF per ASME B16.5.
DIN PN 10, 16, 40, Per EN ISO 1092-1, Type B and F
Shutoff Classification per ANSI/FCI 70-2
and IEC 60534-4
ClassIVisstandard
ClassVIisoptional
Maximum Inlet Pressure and Temperature
Flanged: Compatibility with CL150, 300 per
ASME B16.34 EN ISO 1092-1,2,3,4
Flow Characteristic and Flow Direction
Trim Standard: Linear. Flow Up per valves with
unbalanced plug. Flow Down per valves with
balanced plug.
Trim for Low Noise (Multihole, Whisper): Linear and
Flow Up
Trim Anticavitation (Cavitrol™): Linear and Flow Down
Description
Fisher 1261-R and 1261-E are pressure globe style single-port valves with metal seats, cage guiding and
push-down-to-close valve plug action.
The 1261-R is used for pressure-reducing service. Increasing the pressure in the diaphragm casing moves the actuator
stem downward.
The 1261-E is used for pressure-relief service. Increasing the pressure in the diaphragm casing moves the actuator
stem upward.
The 1261.00-R and 1261.00-E valves use an unbalanced plug. The 1261.01-R and 1261.01-E use balanced valve plugs.
(See bulletin 1100 Control Valves for different types of cages and balanced plugs).
Specifications
Specifications for the 1261-R and 1261-E are shown in table 1. Refer to separate manuals for information concerning
the actuator.
Table 2. Codification for Fisher 1261 Valves
CODE 1 2 6 1 . X X
Digit 1 2 3 4 5 6
DIGIT N_ DESCRIPTION DIRECTION FLOW
0 Standard Trim Flow-Up
1 Low noise trims (Multihole) Flow-Up
2
4
5
6
5 Anticavitation Trim (Cavitrol III 1 Step) Flow-Down
6
7 Anticavitation Trim (Cavitrol III 2 Steps) Flow-Down
8
9 Low noiselevel trim( Whisper III A,B,C,D3) Flow-Up
0 Non balanced Plug Flow-Up
1 Balanced Plug (seal Keilpac). Flow-Down
2
3
4 Balanced Plug (seal MSE) Flow-Down
5
6
2
Instruction Manual
D103528X012
1261-R and 1261-E Valves
November 2012
Table 3. Available Shutoff Classifications per ANSI/FCI 70-2 and IEC 60534-4
Valve Type Type Balanced Max. Temp
1261.00 None
1261.01 KEILPAC 200_C
1261.04 MSE 316_C
1. See temperature capabilities of actuator diaphragm material
2. Valves with antinoise trim (Multihole, Whisper Trim™, etc) flow direction will be Flow-Up.
3. Maximum temperature limited by Keilpac gasket material.
(1)
400_C
200_C Metal to PTFE Standard VI
316_C Metal to Ekonol Standard VI
(3)
Seat Type Enclosure Type Flow Direction
Metal to Metal Standard IV
Metal to Metal Optional V
Metal to Metal Standard IV
Metal to Metal Optional V
Metal to PTFE Standard VI
Metal to Metal Standard IV
Metal to Metal Optional V
Metal to Ekonol Standard VI
Flow-Up
Flow-Down
Table 4. Maximum Flow Coefficients (Cv) with Quick Opening per 1261.00-R and 1261.00-E valves
VALVE SIZE SEAT DIAMETER (mm)
NPS 4 6 10 15 20 30 40 50
1/2
3/4
1 11.6 20
1-1/2
2 46 51
3
4
Stroke (mm) 1.5 2 3 4.5 6 9 12 16
Notes: 1. Kv = 0.865 x Cv
0.7 1.5 3.5
3.5 8.1 11.6 27
6.9
8.1
9.2
39
11.6 27 46 64
(2)
Table 5. Maximum Flow Coefficients (Cv) with Quick Opening per 1261.01-R, 1261.04 R, 1261.01 E and
1261.04 E Valves
VALVE SIZE SEAT DIAMETER (mm)
NPS 50 65 80 95
2 51
3
4 139
Stroke (mm) 16 16 16 16
Notes: 1. Kv = 0.865 x Cv
64 94 117
3
1261-R and 1261-E Valves
November 2012
Figure 2. Typical Installation Schematics
Instruction Manual
D103528X012
1/2 NPT
RACTUATOR
STRAINER STRAINER1261
PRESSURE-REDUCING VALVE
PRESSURE — REDUCING INSTALLATION
NEEDLE VALVE
BYPASS
LINE
NEEDLE VALVE
1/2 NPT
PRESSURE — RELIEF INSTALLATION
EACTUATOR
1261
PRESSURE-RELIEF VALVE
BYPASS
LINE
Installation
WARNING
Always wear protective gloves, clothing, and eyewear when performing any installation operations to avoid personal
injury.
Personal injury or equipment damage caused by sudden release of pressure may result if the valve assembly is installed
where service conditions could exceed the limits given in table 1 or the appropriate nameplate. To avoid such injury or
damage, provide a relief valve for overpressure protection 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.
CAUTION
When ordered, the valve configuration and construction materials were selected to meet particular pressure, temperature,
pressure drop, and controlled fluid conditions. Since some body/trim material combinations are limited in their pressure
drop and temperature ranges, do not apply any other conditions to the valve without first contacting your Emerson Process
Management sales office.
1. Before installing the valve, inspect it to be certain that the valve body cavity is free of foreign material. Clean out all
pipelines to remove scale, welding slag, and other foreign materials.
2. The control valve assembly may be installed in any orientation unless limited by seismic criteria. If the regulator or
relief valve is to be used for steam service, the valve should be installed with the actuator positioned below the
pipeline, and the control line should be sloped down toward the diaphragm casing. This is to ensure that any forming
condensate will maintain a water seal to protect the diaphragm. For more information consult your Emerson Process
Management sales office. Flow through the valve must be in the direction indicated by the arrow cast on the valve.
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Instruction Manual
D103528X012
1261-R and 1261-E Valves
November 2012
3. Use accepted piping practices when installing the valve in the pipeline. Use a suitable gasket between the valve and
pipeline flanges.
4. It is recommended that a strainer be installed in the pipeline ahead of the regulator or relief valve to protect it while
in service. (see figure 2).
5. If continuous operation is required during inspection or maintenance, install a three-valve bypass around the valve
assembly.(see figure 2)
6. If the actuator and valve are shipped separately, refer to the appropriate actuator instruction manual for the
actuator mounting procedure.
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.
Maintenance
WARNING
Avoid personal injury or property damage from sudden release of process pressure or bursting of parts. Before performing
any maintenance operations:
D Do not remove the actuator from the valve while the valve is still pressurized.
D Disconnect any operating lines providing air pressure, electric power, or a control signal to the actuator. Be sure the
actuator cannot suddenly open or close the valve.
D Isolate the regulator or relief valve from the system pressure, and relieve all internal pressure.
D Use 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.
D Vent the power actuator loading pressure and relieve any actuator spring precompression as described in the
disassembly actuator section..
D Use lock-out procedures to be sure that the above measures stay in effect while you work on the equipment.
D Always wear protective gloves, clothing, and eyewear when performing any maintenance operations to avoid personal
injury.
D The valve packing area 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.
D Check with your process or safety engineer for any additional measures that must be taken to protect against process
media.
Valve parts are subjects to normal wear and must be inspected and replaced as necessary. Inspection and maintenance
frequency depends on the severity of service conditions The maintenance operations may be performed with the valve
in the line.
Note
Whenever a gasket seal is disturbed by removing or shifting gasket parts, a new gasket should be installed upon reassembly. This is
necessary to ensure a good gasket seal.
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1261-R and 1261-E Valves
November 2012
Figure 3. Typical Packing Assemblies for 1261 Valves
Instruction Manual
D103528X012
TYPICAL PTFE PACKING, V-RING
TYPICAL ENVIRO-SEAL™ PTFE PACKING
TYPICAL BRAIDED PTFE PACKING TYPICAL GRAPHITE PACKING
TYPICAL ENVIRO-SEAL GRAPHITE PACKING
Maintenance information which follows for packing maintenance, replacing packing, trim maintenance, and repairing
are for the 1261 valve with plain bonnet. A 1261 valve with a plain bonnet is shown in figure 4.
Packing Maintenance
Key numbers refer to figure 3.
For spring-loaded single PTFE V-ring packing, the packing spring (key 112) maintains a sealing force on the packing. If
leakage is noted around the bushing of the packing flange (key 101), check to be sure the packing flange is touching
the bonnet (key 12 fig 4). If the packing flange is not touching the bonnet, tighten the packing flange nuts (key 103)
until the packing flange is against the bonnet. If leakage cannot be stopped in this manner, proceed to the Replacing
Packing procedure.
If there is undesirable packing leakage with other than spring-loaded packing, first try to limit the leakage and
establish a stem seal by tightening the packing flange nuts (key 103) to at least the minimum recommended torque in
table 6. However, do not exceed the maximum recommended torque in table 6, or excessive friction may result.
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Instruction Manual
D103528X012
1261-R and 1261-E Valves
November 2012
If the packing (fig 4, key 13) is relatively new and tight on the stem, and if tightening the packing flange nuts does not
stoptheleakage,itispossiblethatthevalvestemiswornor nicked so that the seal cannot be made. The surface finish
of a new valve stem is critical for making a good packing seal.
Iftheleakagecomesfromtheoutsidediameterofthepacking,itispossiblethattheleakageiscausedbynicksor
scratches around the packing box wall. While replacing the packing per the numbered steps below, inspect the valve
stem and packing box wall for nicks and scratches.
Replacing Packing
1. Isolate the pressure-reducing or pressure-relief valve from the line pressure, release pressure from both sides of the
valve body, and drain the process media from both sides of the valve. Release all pressure from the actuator. Use
lock-out procedures to be sure that the above measures stay in effect while you work on the equipment.
2. Disconnect any leak-off piping from the bonnet. Disconnect the stem connector, and then remove the actuator
fromthevalvebyunscrewingthelegpostnuts(key11,figure6).
3. Loosen the packing flange nuts (key 103) so that the pac king is not tight on the valve stem. Remove any travel
indicator parts and stem lock nuts from the valve stem threads.
WARNING
To avoid personal injury or property damage caused by uncontrolled movement of the bonnet, loosen the bonnet by
following the instructions in the next step. Do not remove a stuck bonnet by pulling on it with equipment that can stretch
or store energy in any other manner. The sudden release of stored energy can cause uncontrolled movement of the bonnet.
Note
The following step also provides additional assurance that the valve body f luid pressure has been relieved.
4. Hex nuts (key 11) attach the bonnet (key 12) to the valve body (key 1). Loosen these nuts approximately 3mm (1/8
inch). Then loosen the body-to-bonnet gasketed joint by either rocking the bonnet or prying between the bonnet and
valve body. Work the prying tool around the bonnet until the bonnet loosens. If no fluid leaks from the joint, remove
the nuts completely and carefully lift t he bonnet off the valve stem.
CAUTION
When lifting the bonnet (key 12), be sure that the valve plug and stem remains in the valve and on the seat. This will avoid
damage to the seating surfaces as a result of the assembly dropping from the bonnet after being lifted part way out. The
parts are also easier to handle separately.
5. Unscrew the nuts (key 10) that secure the bonnet (key 12) to the valve (key 1). Carefully lift off the bonnet.
6. If the valve plug and stem start to lift with the bonnet, use a brass or lead hammer on the end of the stem and tap it
back down. Set the bonnet on a protective surface to prevent damage to the bonnet gasket surface.
7. Remove the bonnet gasket (key 22), and cover the opening in the valve to protect the gasket surface and prevent
foreign material from getting into the valve cavity.
8. Remove the packing flange nuts and packing flange (keys 103 and 101, fig 3). Carefully push out all the remaining
packing box parts from the bonnet using a rounded rod or other tool that will not scratch the packing box wall or
bottomguidebushing.Cleanthepackingboxandthemetalpackingboxparts.
9. Inspect the valve stem threads and packing box surfaces for any sharp edges that might cut the packing. Scratches
or burrs could cause packing box leakage or damage to the new packing. If the surface condition cannot be improved
by light sanding, replace the damaged parts.
7
1261-R and 1261-E Valves
November 2012
Instruction Manual
D103528X012
10. Remove the covering protecting the valve cavity, and install a new gasket set (key 22 and 34), making sure the
gasket seating surfaces are clean and smooth. Then slide the bonnet over the stem and onto the bonnet studs
(key 11).
Note
The bolting procedures in step 11 include - but are not limited to - ensuring that bolting threads are clean, and the nuts are evenly
tightened onto the studs in a crisscross pattern. Tightening one nut may loosen an adjacent nut. Repeat the crisscross tightening
pattern several times until each nut is tight and the body-to-bonnet seal is made. When the operating temperature has been
reached, perform the torquing procedure once again.
Table 6. Recommended Torque for Packing Flange Nuts
STEM DIAMETER RATING
mm Inch ASME DIN N•m Lbf•in N•m Lbf•in N•m Lbf•in N•m Lbf•in
CL150 2.5 22 3.8 34 1.9 17 2.8 25
12 0.47
CL300 3.4 30 5.1 45 2.5 22 3.7 33
PN40 3.1 27 4.6 41 2.3 20 3.5 31
Minimum Torque Maximum Torque Minimum Torque Maximum Torque
GRAPHITE PACKING PTFE PACKING
Table 7. Recommended Torque for Body to Bonnet Bolting
DN
mm ASME DIN N•m Lbf•in N•m Lbf•in N•m Lbf•in
15, 20, 25 1/2, 3/4, 1
40, 50 1-1/2, 2
80, 100 3, 4
NPS
CL150
CL300
CL150
CL300
CL150
CL300
RATING
PN40 M12 70 52 70 52 54 40
PN40 M16 160 118 160 118 120 89
PN40 M16 160 118 160 118 120 89
SIZE
BOLTED
8.8, SA-193-B7, B16 SA-193-B8M CL 2 A2.70
11. Lubricate the bonnet studs (key 10), nuts (key 11), and the surface between the nuts and bonnet with MoS2
(Molykote 111, paste with large solid content) lubricant or equivalent. Tighten the nuts (key 11) in a crisscross pattern
until the metallic stop at the bottom side of the bonnet flange contacts the body surface. this will guarantee that the
body-to-bonnet joint will withstand test pressures and application service conditions. Use bolt torques in table 7 as
guidelines.
12. Install new packing and the metal packing box parts according to the appropriate arrangement in figure 3. Place a
smooth-edged pipe over the valve stem, and gently tap each soft packing part into the packing box, being sure that air
is not trapped between adjacent soft parts.
13. Slide the packing flange (keys 101) into position. Lubricate the packing flange studs (key 102) and the faces of the
packing flange nuts (key 103). Install the packing flange nuts.
Note
The torque values discussed in step 14 and shown in table 6 are recommended guidelines only and are presented as a starting point
for this procedure. Tightening the packing flange nuts to a torque value that exceeds the table guidelines, in order to obtain a seal,
may indicate other problems.
14. For spring-loaded PTFE V-ring packing (figure 3), tighten the packing flange nuts until the packing flange (key 101)
contacts the bonnet.
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Instruction Manual
D103528X012
For graphite packing (figure 3 ), tighten the packing flange nuts to the maximum recommended torque shown in
table 6. Then, loosen the packing flange nuts, and retighten them to the recommended minimum torque shown in
table 6.
For other packing types (figure 3), tighten the packing flange nuts alternately in small equal increments until one of
thenutsreachestheminimumrecommendedtorqueshownintable6.
Then, tighten the remaining flange nut until the packing flange is level and at a 90- degree angle to the valve stem.
Mount the actuator on the bonnet (key 12) and reconnect the actuator and valve plug stem according to the
procedure in the appropriate actuator instruction manual. Check for leakage around the top bushing when the valve
assembly is being put into service. Retighten the packing flange nuts as required.
1261-R and 1261-E Valves
November 2012
Trim Maintenance
Key numbers in this section refer to figure 4.
Disassembly
1. Remove the actuator and the bonnet as described in steps 1 through 4 of the Replacing Packing procedure.
WARNING
Use care to avoid damaging the gasket sealing surfaces. The surface finish of the stem of the valve plug (key 8) is critical for
making a good packing seal. The seating surfaces of the seat ring (key 2) and, the plug (key 7) are critical for tight shutoff.
Assume all these parts are in good condition and protect them accordingly unless inspection reveals otherwise.
2. Packing parts can be removed from the bonnet if desired. Replace this part as described in the packing
maintenance procedure.
3. Liftthevalveplugandstem(key7and8)outofthevalve.Ifthevalveplugistobereused,tapeorotherwiseprotect
the valve plug seating surface to prevent scratches.
4. Remove the cage (key 6), the associated gaskets (key 22 and 34. If the cage is stuck in the valve, use a rubber mallet
to strike the exposed portion of the cage at several points around its circumference.
5. Remove the seat ring (key 2), seat ring adapter where used on a restricted-trim (key 2.1 fig 6.2) soft seat ring
construction, and seat ring gasket (key 4).
6. Inspect parts for wear or damage which would prevent proper operation of the valve. Replace or repair trim parts as
appropriate.
Assembly
1. Install the seat ring gasket ( key 4 ), and seat ring. With a PTFE seat ring construction, install the disk and disk
retaining, if is necessary.
2. Install the cage (key 6). Any rotational orientation of the case with respect to the valve body is acceptable.
3. Slide the valve plug (key 7 and 8) and stem assembly, into the cage. Make sure the seal ring is evenly engaged in the
entrance chamfer at the top of the cage to avoid damaging the ring.
4. Clean the bonnet and cage gaskets seating surfaces, and install a new gasket (key 22 and 34).
Note
If the packing is to be reused and was not removed from the bonnet, perform the following step carefully to avoid damaging the
packing with the stem threads.
9
1261-R and 1261-E Valves
November 2012
5. Mount the bonnet on the valve body, and complete the assembly according to steps 11 through 14 of the replacing
packing procedures, omitting steps 12 and 13 if new packing is not being installed.
Instruction Manual
D103528X012
Parts Ordering
Eachvalveisassignedaserialnumber,whichcanbefoundonthevalveoronthenameplatewiredtothevalveifitis
shipped without an actuator. This same number also appears on a nameplate that is attached to the actuator
diaphragm casing when the valve is shipped from the factory as part of a valve assembly. Refer to this serial number
when contacting your Emerson Process Management sales office for technical assistance. When ordering replacement
parts, refer to this serial number and to the part description and part number from the following parts list.
WARNING
Use only genuine Fisher replacement parts. Components that are not supplied by Emerson Process Management 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.
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Instruction Manual
D103528X012
Parts List
Note
Except where indicated, sizes shown are valve sizes.
1261-R and 1261-E Valves
November 2012
Key Description Part Number
1ValveBody
If youneed a valve body as a replacement part, order by valve
size, serial number and desired material. contact your Emerson
Process Management sales office for additional information.
2 Seat ring See following table
4 Seat ring gasket See following table
6 Cage See following table
7 Plug See following table
8 Stem plug See following table
9 Pin See following table
Key Description Part Number
10 Bonnet studs See following table
11 Bonnet nuts See following table
12 Bonnet
If you need a bonnet as a replacement part, order by valve size
and stem diameter, serial number and desired material. Contact
your Emerson Process Management sales office for additional
information
13 Packing assembly See following table
21 Balanced seal ring plug See following table
22 Body/Bonnet gasket See followingtable
34 Cage gasket See following table
Key 2 Metal Seat Rings
VALVE SIZE SEAT PORT DIAMETER METAL SEAT RING
mm NPS mm Inch S31600 S42000
4 0.16 GP16511.416 GP16511.420 GP16511.46C
15, 20, 25 1/2, 3/4, 1
20, 25 3/4, 1
40, 50 1-1/2, 2
80, 100 3, 4
6 0.24 GP16512.416 GP16512.420 GP16512.46C
10 0.39 GP16513.416 GP16513.420 GP16513.46C
15 0.59 GP16514.416 GP16514.420 GP16514.46C
20 0.79 GP16515.416 GP16515.420 GP16515.46C
30 1.18 GP16527.416 GP16527.420 GP16527.46C
10 0.39 GP16184.416 GP16184.420 GP16184.46C
15 0.59 GP16516.416 GP16516.420 GP16516.46C
20 0.79 GP16517.416 GP16517.420 GP16517.46C
30 1.18 GP16518.416 GP16518.420 GP16518.46C
40 1.57 GP16519.416 GP16519.420 GP16519.46C
50 1.97 GP16523.416 GP16523.420 GP16523.46C
20 0.79 GP16520.416 GP16520.420 GP16520.46C
30 1.18 GP16521.416 GP16521.420 GP16521.46C
40 1.57 GP16522.416 GP16522.420 GP16522.46C
50 1.97 GP16524.416 GP16524.420 GP16524.46C
65 2.56 GP16525.416 GP16525.420 GP16525.46C
80 3.15 GP16526.416 GP16526.420 GP16526.46C
95 3.74 GP16529.416 GP16529.420 GP16529.46C
S31600 with Alloy 6
hard facing
11
1261-R and 1261-E Valves
November 2012
Key 2, 2.1 and 2.2 Metal-PTFE Seat Rings
VALVE SIZE SEAT PORT DIAMETER PTFE-SEATRING, RETAINER, AND DISK
Seat Ring
S31600
15, 20, 25 1/2, 3/4, 1
20, 25 3/4, 1
40, 50 1-1/2, 2
80, 100 3, 4
Retainer
S31600
Disk PTFE Disk EKONOL
4 0.16 GP16503.416 GP16593.416 GD8900001PT GD8900017EK
6 0.24 GP16504.416 GP16593.416 GD8900002PT GD8900018EK
10 0.39 GP16505.416 GP16594.416 GD8900003PT GD8900019EK
15 0.59 GP16506.416 GP16595.416 GD8900004PT GD8900004EK
20 0.79 GP16507.416 GP16596.416 GD8900005PT GD8900005EK
30 1.18 GP16508.416 --- GD8900009PT GD8900009EK
10 0.39 GP22880.416 GP22881.416 GD8900006PT GD8900022EK
15 0.59 GP16585.416 GP16597.416 GD8900007PT GD8900023EK
20 0.79 GP16586.416 GP16598.416 GD8900008PT GD8900024EK
30 1.18 GP16587.416 GP16599.416 GD1486381PT GD8800611EK
40 1.57 GP16588.416 GP16600.416 GD8900010PT GD8900035EK
50 1.97 GP16589.416 --- GD8900011PT GD8000176EK
20 0.79 GP16500.416 GP16598.416 GD8900008PT GD8900024EK
30 1.18 GP16501.416 GP16599.416 GD1486381PT GD8800611EK
40 1.57 GP16502.416 GP16600.416 GD8900010PT GD8900035EK
50 1.97 GP16590.416 --- GD8900011PT GD8000176EK
65 2.56 GP16591.416 --- GD8900012PT GD8800281EK
80 3.15 GP16592.416 --- GD8900013PT GD8800175EK
95 3.74 GP16510.416 --- GD8900036PT GD8800462EK
Instruction Manual
D103528X012
Key 6 Cage
VALVE SIZE SEAT PORT DIAMETER 1261.00 1261.01 and 1261.04
mm NPS mm Inches SA-351 CF8M
15, 20, 25 1/2, 3/4, 1
40, 50 1-1/2, 2
50 2 50 1.97 GP16087.48M GP16087.4PH GP16093.48M
80, 100 3, 4
1. Bonnet Spacer GP85461.4 is needed for 1261.01and 1261.04 Balanced Plug Valve. (NPS 2 only ).
4, 6, 10 0.16 to
15, 20, 30 1.18
10, 15, 20 0.39to
30, 40 1.57
20, 30 40 0.79 to 1.57 GP16089.48M GP16089.4PH --- ---
50 1.97 GP16089.48M GP16089.4PH GP16095.48M GP16095.4PH
65 2.56 GP16090.48M GP16090.4PH GP16096.48M GP16096.4PH
80 3.15 GP16091.48M GP16091.4PH GP16097.48M GP16097.4PH
95 3.74 GP16092.48M GP16092.4PH GP16098.48M GP16098.4PH
GP16086.48M GP16086.4PH --- ---
GP16087.48M GP16087.4PH --- ---
17.4PH
Hardened
SA-351 CF8M
(1)
GP16093.4PH
17.4PH
Hardened
(1)
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Instruction Manual
D103528X012
Key 7.1 Valve Plug for assembly 1261.00
VALVE SIZE SEAT PORT DIAMETER METAL TO METAL AND METAL PTFE
mm NPS mm Inches S31600 S42000
4 0.16 GP16729.416 GP16729.420 GP16729.46C GP16729.46T
15, 20, 25 1/2, 3/4, 1
20, 25 3/4, 1
40, 50 1-1/2, 2
80, 100 3, 4
6 0.24 GP16730.416 GP16730.420 GP16730.46C GP16730.46T
10 0.39 GP16731.416 GP16731.420 GP16731.46C GP16731.46T
15 0.59 GP16732.416 GP16732.420 GP16732.46C GP16732.46T
20 0.79 GP16733.416 GP16733.420 GP16733.46C GP16733.46T
30 1.18 GP16734.416 GP16734.420 GP16734.46C GP16734.46T
10 0.39 GP18637.416 GP18637.420 GP18637.46C GP18637.46T
15 0.59 GP16735.416 GP16735.420 GP16735.46C GP16735.46T
20 0.79 GP16736.416 GP16736.420 GP16736.46C GP16736.46T
30 1.18 GP16737.416 GP16737.420 GP16737.46C GP16737.46T
40 1.57 GP16738.416 GP16738.420 GP16738.46C GP16738.46T
50 1.97 GP16742.416 GP16742.420 GP16742.46C GP16742.46T
20 0.79 GP16739.416 GP16739.420 GP16739.46C GP16739.46T
30 1.18 GP16740.416 GP16740.420 GP16740.46C GP16740.46T
40 1.57 GP16741.416 GP16741.420 GP16741.46C GP16741.46T
50 1.97 GP16744.416 GP16744.420 GP16744.46C GP16744.46T
65 2.56 GP16745.416 GP16745.420 GP16745.46C GP16745.46T
80 3.15 GP16746.416 GP16746.420 GP16746.46C GP16746.46T
95 3.74 GP16747.416 GP16747.420 GP16747.46C GP16747.46T
1261-R and 1261-E Valves
S31600 with
Alloy 6 hard facing
November 2012
S31600 with
Alloy 6 Seat & Guide
Key 7.2 Valve Plug for assembly 1261.01
VALVE SIZE SEAT PORT DIAMETER METAL TO METAL AND METAL PTFE
mm NPS mm Inches S31600 S42000
50 2 50 1.97 GP83071.416 GP83071.420 GP83071.46C GP83071.46T
50 1.97 GP83071.416 GP83071.420 GP83071.46C GP83071.46T
80, 100 3, 4
65 2.56 GP83072.416 GP83072.420 GP83072.46C GP83072.46T
80 3.15 GP83073.416 GP83073.420 GP83073.46C GP83073.46T
95 3.74 GP83074.416 GP83074.420 GP83074.46C GP83074.46T
S31600 with
Alloy 6 hard facing
Alloy 6 Seat & Guide
Key 7.3 Valve Plug for assembly 1261.04
VALVE SIZE SEAT PORT DIAMETER METAL TO METAL AND METAL-EKONOL
mm NPS mm Inches S31600 S42000
50 2 50 1.97 GP83289.316 GP83289.320 GP83289.36C GP83289.36T
50 1.97 GP83289.316 GP83289.320 GP83289.36C GP83289.36T
80, 100 3, 4
65 2.56 GP83905Y316 GP83905Y320 GP83905Y36C GP83905Y36T
80 3.15 GP83506B316 GP83506B320 GP83506B36C GP83506B36T
95 3.74 GP84004D316 GP84004D320 GP84004D36C GP84004D36T
S31600 with
Alloy 6 hard facing
Alloy 6 Seat & Guide
S31600 with
S31600 with
13
1261-R and 1261-E Valves
November 2012
Instruction Manual
D103528X012
Key8and9ValvePlugStemandPinStem
VALVE SIZE SEATPORT DIAMETER
mm NPS mm Inches A2.70 S31600 S31600 S31600 S31600
15, 20, 25 1/2, 3/4, 1
40, 50 1-1/2, 2
50 2 50 1.97 GD017487447 GP16749.416 GP16751.416 GP40.224516 GP40.224616
80, 100 3,4
4, 6, 10 15,
20, 30
10, 15, 20 30,
40
20, 30 40 0.79to 1.57
50 65 80 95
0.16 to1.18 GD017487447 GP16748.416 GP16752.416 --- ---
0.39 to1.57 GD017487447 GP16749.416 GP16751.416 --- ---
1.97 2.563.15
3.74
PIN
All Valves Bonnet 00 Bonnet 02 Bonnet 00 Bonnet02
GD017487447 GP16749.416 GP16751.416
PLUG STEM PLUG STEM
1261.00 Valve 1261.01 and 1261.04Valve
--- ---
GP40.224516 GP40.224616
Key 21 Balanced Plug Seal Ring
KEILPAC MSE
VALVE SIZE SEAT PORT DIAMETER
mm NPS mm Inches PTFE+E540-80 PTFE+V747-75 EKONOL S31600 S30200
50 2 50 1.97 GS0870960EP GS0870986VI GD8800711EK GP85544.416 10A4220X012
50 1.97 GS0870960EP GS0870986VI GD8800711EK GP85544.416 10A4220X012
80, 100 3, 4
65 2.56 GS0871052EP GS0871079VI GD8800055EK GP85069.416 10A4210X012
80 3.15 GS0871150EP GS0871176VI GD8899275EK GP85083.416 10A4219X012
95 3.74 GS0871184EP GS0871206VI GD8800059EK GP87132.416 10A5350X012
Ethylen-Propy.
O-ring
Flouorocarb.
O-ring
Seal Ring Back-up Ring Retaining Ring
Key 4, 22, 34 and 13 Gaskets and Packing
VALVE SIZE GASKET KITS PACKING KITS
mm NPS Graphite "V" PTFE Braided PTFE
15, 20, 25 1/2, 3/4, 1 GS8700011GR GS8700010PT GS8700004PT GS8700002GR GS8000072PT GS8000073GR
40, 50 1-1/2,2 GS8700012GR GS8700010PT GS8700004PT GS8700002GR GS8000072PT GS8000073GR
80, 100 3, 4 GS8700048GR GS8700010PT GS8700004PT GS8700002GR GS8000072PT GS8000073GR
Ribbon/Filament
Graphite
ENVIRO-SEAL
PTFE+Graphite
ENVIRO-SEAL
Graphite
14
Instruction Manual
D103528X012
Figure 4. Fisher 1261.00 Valve with Standard Bonnet
1261-R and 1261-E Valves
November 2012
Figure 5. Fisher 1261.01 Valve with Standard Bonnet (Balanced Plug).
15
1261-R and 1261-E Valves
November 2012
Instruction Manual
D103528X012
Figure 6. Standard Bonnet NPS 1-1/2 to 4
Figure 8. Extension Bonnet NPS 1/2 to 4
Figure 7. Valve with Soft Seat
(PTFE and other materials)
Figure 9. Valve with Soft Seat and Reduced Port
16
Instruction Manual
D103528X012
1261-R and 1261-E Valves
November 2012
Figure 10. Cage 1261.00 STANDARD
FLOW DIRECTION
Figure 12. Cage 1261.10 MULTIHOLE
FLOW DIRECTION
Figure 11. Cage 1261.90 WHISPER III A1-C3
FLOW DIRECTION
Figure 13. Cage 1261.90 WHISPER III D3
FLOW DIRECTION
17
1261-R and 1261-E Valves
November 2012
Instruction Manual
D103528X012
Figure 14. Cage 1261.01 with Balanced Plug KEILPAC
NPS 2 - NPS 4
DETAIL A
Figure 16. Cage 1261.04 with Balanced Plug MSE
NPS 2 - NPS 4
DETAIL B
FLOW UP
FLOW DOWN
Figure 15. Cage 1261.11 MULTIHOLE
with Balanced Plug KEILPAC
FLOW DIRECTION
FLOW UP
FLOW DOWN
Figure 17. Cage 1261.51 CAVITROL III
1 Step with Balanced Plug KEILPAC
FLOW DIRECTION
18
Instruction Manual
D103528X012
1261-R and 1261-E Valves
Figure 18. Fisher 1261 - R Dimensions Figure 19. Fisher 1261 - E Dimensions
November 2012
Table 8. Dimensions (mm)
Nominal Diameter ( mm ) 15 20 25 32 40 50 65 80 100
Nominal Pipe Size (NPS) 1/2 3/4 1 1-1/4 1-1/2 2 2-1/2 3 4
EN 558-1 PN 10-40 130 150 160 180 200 230 290 310 350
ISA-75.03
A
ISA-75.03
D
G 65 70 95
ASME
CL150 RF
ASME
CL300 RF
Bonnet 00 95 175 195
Bonnet 02 265 290 310
184 184 184 --- 222 254 --- 298 352
190 194 197 --- 235 267 --- 318 368
Table 9. Dimensions (mm)
ACTUATOR TYPE R-2100 R-2101 R-2102 R-3100 R-4100 E-2100 E-2101 E-2102 E-3100 E-4100
Diameter C 215 215 215 315 475 215 215 215 312 475
E 485 480 475 475 560 570 565 560 625 565
F 60 60 60 80 160 355 350 345 330 350
19
1261-R and 1261-E Valves
November 2012
Instruction Manual
D103528X012
Table 10. Approximate Weights (Kg)
Nominal Diameter (mm) 15 20 25 32 40 50 65 80 100
Nominal Pipe Size (NPS) 1/2 3/4 1 1-1/4 1-1/2 2 2-1/2 3 4
PN 10-40 8 8 8 12 20 23 29 44 50
Assy Body
ASME CL150 RF 9 9 9 --- 19 23 --- 42 50
ASME CL300 RF 9 9 10 --- 21 26 --- 49 59
Table 11. Approximate Weights (Kg)
ACTUATOR
TYPE
Kg 15 15 15 25 45 15 15 15 25 45
R-2100 R-2101 R-2102 R-3100 R-4100 E-2100 E-2101 E-2102 E-3100 E-4100
Neither Emerson, Emerson Process Management, 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 productremains solely with the purchaser and end user.
Fisher, Cavitrol, Whisper Trim, and ENVIRO-SEAL are marks owned by one of the companies in the Emerson Process Management business unit of Emerson
Electric 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 available uponrequest. We reserve the right to modify or improve the designs or specifications of 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
20
E 2004, 2012 Fisher Controls International LLC. All rights reserved.
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