Instruction Manual
D103048X012
Fisher™ 3024C Diaphragm Actuator
3024C Actuator
June 2017
Contents
Introduction 1.................................
Scope of Manual 1..............................
Description 2..................................
Specifications 3................................
Installation 5..................................
Mounting the Actuator on the Valve 5............
Actuator Maintenance 8.........................
Disassembly 8................................
Assembly 9...................................
Changing the Actuator Action 12................
Side‐Mounted Handwheel 12...................
Adjustable Travel Stops 13......................
Parts Ordering 15...............................
Parts List 18..................................
Figure 1. Fisher 3024C Actuator with Sliding‐Stem
Valve
W8488
Introduction
Scope of Manual
This instruction manual provides information on installation, adjustment, maintenance, and parts ordering for the
Type 3024C actuator (figure 1) for sizes 30 to 45 and 30E to 45E.
Note
This manual assumes throughout that the valve construction is “push‐down‐to‐close.”
Do not install, operate, or maintain a 3024C actuator without being fully trained and qualified in valve, actuator, and
accessory installation, operation, and maintenance. To avoid personal injury or property damage, it is important to
carefully read, understand, and follow all the contents of this manual, including all safety cautions and warnings. If you
have any questions about these instructions, contact your Emerson sales office
proceeding.
or Local Business Partner before
www.Fisher.com
3024C Actuator
June 2017
Table 1. Specifications
Specification
Nominal Effective Area See tables 2 and 3.
Maximum Operating Pressure
to Diaphragm
Maximum Travel
Yoke Boss Diameter
Valve Stem Connector Thread
Temperature Range
Pressure Connections Inch 1/4 – 18 NPT
Maximum Approximate
Weight (without handwheel)
Maximum Approximate
Weight (with handwheel)
Bar 6
psig 87
mm 16 ‐ ‐ ‐ 16 ‐ ‐ ‐ 32 ‐ ‐ ‐ 32 ‐ ‐ ‐
Inch ‐ ‐ ‐ 0.75 ‐ ‐ ‐ 0.75 ‐ ‐ ‐ 2 ‐ ‐ ‐ 2
Inch
(mm)
mm M12 x 1.75 ‐ ‐ ‐ M12 x 1.75 ‐ ‐ ‐ M16 x 2 ‐ ‐ ‐ M16 x 2 ‐ ‐ ‐
Inch ‐ ‐ ‐ 3/8‐24 ‐ ‐ ‐ 3/8‐24 ‐ ‐ ‐ 1/2‐20 ‐ ‐ ‐ 1/2‐20
_C Nitrile diaphragm and steel studs and nuts: -40 to +82
_F Nitrile diaphragm and steel studs and nuts: -40 to +180
kg 9.5 9.5 18.0 18.0 19.5 21.5 33.5 35.5
lb 20.9 20.9 39.7 39.7 43.0 47.4 73.9 78.3
kg 16.5 16.5 25.0 25.0 26.5 28.5 40.5 42.5
lb 36.4 36.4 55.1 55.1 58.4 62.8 89.3 93.7
30 30E 34 34E 40 40E 45 45E
2‐1/8
(54 mm)
2‐1/8
(54 mm)
2‐1/8
(54 mm)
Actuator Size
2‐1/8
(54 mm)
2‐13/16
(71 mm)
Instruction Manual
D103048X012
2‐13/16
(71 mm)
2‐13/16
(71 mm)
2‐13/16
(71mm)
Figure 2. Schematic of Fisher 3024C
AIR PUSHES
STEM DOWN
SPRINGS LIFT
STEM UP
1Q57489
AIR‐TO‐CLOSE (ATC)
STEM SEAL
STEM
AIR‐TO‐OPEN (ATO)
SPRINGS PUSH
STEM DOWN
AIR LIFTS
STEM UP
STEM
Figure 3. Fisher 3024C Actuator Nameplate
1Q574760
Description
The 3024C direct acting (extends stem/air‐to‐close) actuator (figure 8) and the reverse acting (retracts
stem/air‐to‐open) actuator (figure 9) are spring‐opposed pneumatic diaphragm actuators that provide automatic
throttling or on‐off operation of sliding‐stem control valves.
The actuator will position the valve plug in response to varying pneumatic loading pressure on the actuator
diaphragm. Figure 2 shows the operation of an ATC (air‐to‐close) actuator and an ATO (air‐to‐open) actuator.
The 3024C ATC (air‐to‐close) actuator springs are located under the diaphragm plate and they fully retract the
actuator stem for fail action upon loss of diaphragm casing pressure. The 3024C ATO (air‐to‐open) actuator springs are
located on top of the diaphragm plate and they fully extend the actuator stem upon loss of diaphragm casing pressure.
The actuator is mounted on the valve by means of a cast yoke.
The 3024C can be equipped with a side mounted handwheel if required (figure 10). An adjustable up travel stop can
also be fitted (figures 11 and 12).
2
Instruction Manual
D103048X012
3024C Actuator
June 2017
Table 2. Additional Specifications (Action Air‐to‐Close)
Size
30
30E
34
34E
40
40E
45
45E
1. Effective diaphragm area at 0% valve travel from seat.
2. Based upon 6 bar operating pressure to the diaphragm and valve travel at 0% from seat. This does not consider limitation to the valve such as stem buckling load. Consult your Emerson sales
office for details.
Spring Set/
Quantity
217/3
218/5
218/7
217/3
218/5
218/7
219/3
212/5
212/7
219/3
212/5
212/7
212/3
213/6
214/7
212/3
213/6
214/7
213/4
214/5
214/7
213/4
214/5
214/7
221/8
221/12
223/12
221/8
221/12
223/12
221/8
221/12
223/12
221/8
221/12
223/12
Travel Spring Range
mm Inch Bar Psig cm
0.3 ‐ 1.1 4 ‐ 16 160 24.8 7840 1760
16 - - -
- - - 0.75
16 - - -
- - - 0.75
32 - - -
- - - 1.125
- - - 1.5
- - - 2
32 - - -
- - - 1.125
- - - 1.5
- - - 2
1.3 ‐ 2.0 19 ‐ 29 160 24.8 6400 1440
1.8 ‐ 2.9 26 ‐ 42 160 24.8 4960 1120
0.3 ‐ 1.3 4 ‐ 19 160 24.8 7520 1690
1.3 ‐ 2.2 19 ‐ 32 160 24.8 6080 1360
1.8 ‐ 3.0 26 ‐ 44 160 24.8 4800 1070
0.3 ‐ 1.1 4 ‐ 16 400 62.0 19,600 4400
0.9 ‐ 1.7 13 ‐ 25 400 62.0 17,200 3840
1.3 ‐ 2.3 19 ‐ 33 400 62.0 14,800 3350
0.3 ‐ 1.3 4 ‐ 19 400 62.0 18,800 4220
0.9 ‐ 1.8 13 ‐ 26 400 62.0 16,800 3780
1.3 ‐ 2.5 19 ‐ 36 400 62.0 14,000 3160
0.4 ‐ 1.3 6 ‐ 19 390 60.5 18,300 4110
0.8 ‐ 1.8 12 ‐ 26 390 60.5 16,400 3690
1.2 ‐ 2.4 17 ‐ 35 390 60.5 14,000 3150
0.4 ‐ 1.2 6 ‐ 17 390 60.5 18,700 4230
0.8 ‐ 1.7 12 ‐ 25 390 60.5 16,800 3750
1.2 ‐ 2.3 17 ‐ 33 390 60.5 14,400 3270
0.3 ‐ 1.0 4 ‐ 15 380 58.9 19,000 4240
0.6 ‐ 1.5 9 ‐ 22 380 58.9 17,100 3830
0.9 ‐ 2.1 13 ‐ 30 380 58.9 14,800 3360
0.2 ‐ 1.2 3 ‐ 17 370 57.4 17,800 4220
0.5 ‐ 1.7 7 ‐ 25 370 57.4 15,900 3560
0.7 ‐ 2.4 10 ‐ 35 370 57.4 13,300 2980
0.8 ‐ 1.6 12 ‐ 23 790 122 34,800 7810
1.2 ‐ 2.5 17 ‐ 36 790 122 27,600 6220
1.5 ‐ 3.1 22 ‐ 45 790 122 22,900 5120
0.8 ‐ 1.6 12 ‐ 23 790 122 34,800 7810
1.2 ‐ 2.3 17 ‐ 33 790 122 29,200 6590
1.5 ‐ 3.0 22 ‐ 44 790 122 23,700 5250
0.5 ‐ 1.4 7 ‐ 20 780 121 35,900 8110
0.8 ‐ 2.2 12 ‐ 32 780 121 29,600 6650
1.0 ‐ 2.7 15 ‐ 39 780 121 25,700 5810
0.5 ‐ 1.7 7 ‐ 25 770 119 33,100 7380
0.7 ‐ 2.5 10 ‐ 36 770 119 26,900 6070
0.9 ‐ 3.1 12 ‐ 45 770 119 22,300 5000
Effective Diaphragm Area
(1)
2
Inches
Maximum Output Thrust
(Maximum Actuator Stem
2
Force)
N Lb
(2)
Specifications
Refer to table 1 for Specifications of the 3024C actuator. See the actuator nameplate (figure 3) for specific information
about your actuator.
3
3024C Actuator
June 2017
Instruction Manual
D103048X012
Table 3. Additional Specifications (Action Air‐to‐Open)
Size
Spring Set/
Quantity
Travel Spring Range
mm Inch Bar Psig cm
217/3
30
218/5
218/7
16
- - -
217/3
30E
218/5
- - - 0.75
218/7
219/3
34
212/5
16 - - -
212/7
219/3
34E
212/5
- - - 0.75
212/7
212/3
40
213/6
32 - - -
214/7
212/3
213/6
- - - 1.125
214/7
213/4
40E
214/5
214/7
- - -
1.5
213/4
214/5
- - - 2
214/7
221/8
45
221/12
32 - - -
223/12
221/8
221/12
- - - 1.125
223/12
221/8
45E
221/12
- - - 1.5
223/12
221/8
221/12
- - - 2
223/12
1. Effective diaphragm area at 0% valve travel from seat.
2. Based on zero operating pressure to the diaphragm and valve travel at 0% from valve seat. This does not consider limitations such as stem buckling load. Consult your Emerson sales office
Local Business Partner for details.
0.5 ‐ 1.3 7 ‐ 19 170 26.4 780 170
1.4 ‐ 2.2 20 ‐ 32 170 26.4 2360 530
2.0 ‐ 3.1 29 ‐ 45 170 26.4 3360 760
0.3 ‐ 1.3 4 ‐ 19 175 27.1 550 120
1.2 ‐ 2.2 17 ‐ 32 175 27.1 2180 490
1.8 ‐ 3.1 26 ‐ 45 175 27.1 3110 700
0.6 ‐ 1.4 9 ‐ 20 410 63.6 2450 550
1.1 ‐ 1.9 16 ‐ 28 410 63.6 4610 1040
1.6 ‐ 2.7 23 ‐ 39 410 63.6 6560 1480
0.4 ‐ 1.4 6 ‐ 20 420 65.1 1880 420
1.0 ‐ 1.9 15 ‐ 28 420 65.1 4120 930
1.4 ‐ 2.7 20 ‐ 39 420 65.1 5870 1320
0.4 ‐ 1.3 6 ‐ 19 450 69.8 1880 420
0.8 ‐ 1.8 12 ‐ 26 450 69.8 3640 820
1.2 ‐ 2.4 17 ‐ 35 450 69.8 5530 1240
0.5 ‐ 1.3 7 ‐ 19 440 68.2 2200 500
0.9 ‐ 1.8 13 ‐ 26 440 68.2 3970 890
1.3 ‐ 2.4 19 ‐ 35 440 68.2 5920 1330
0.4 ‐ 1.1 6 ‐ 16 410 63.6 1560 350
0.7 ‐ 1.6 10 ‐ 23 410 63.6 3010 680
1.0 ‐ 2.3 15 ‐ 33 410 63.6 4270 960
0.2 ‐ 1.2 3 ‐ 17 440 68.2 1060 240
0.5 ‐ 1.8 7 ‐ 26 440 68.2 2390 540
0.8 ‐ 2.5 12 ‐ 36 440 68.2 3400 760
0.8 ‐ 1.7 12 ‐ 25 940 146 7790 1750
1.2 ‐ 2.5 17 ‐ 36 940 146 11,700 2630
1.6 ‐ 3.2 23 ‐ 46 940 146 14,700 3300
0.9 ‐ 1.7 13 ‐ 25 910 141 8350 1880
1.4 ‐ 2.5 20 ‐ 36 910 141 12,500 2810
1.7 ‐ 3.2 25 ‐ 46 910 141 15,700 3530
0.7 ‐ 1.6 10 ‐ 23 870 135 6150 1380
1.1 ‐ 2.4 16 ‐ 35 870 135 9230 2080
1.3 ‐ 3.1 19 ‐ 45 870 135 11,500 2590
0.5 ‐ 1.7 7 ‐ 25 940 146 4740 1070
0.8 ‐ 2.6 12 ‐ 38 940 146 7110 1600
0.9 ‐ 3.2 13 ‐ 46 940 146 8800 1980
Effective Diaphragm Area
(1)
2
Inches
Maximum Output Thrust
(Maximum Actuator Stem
2
Force)
N Lb
(2)
or
Table 4. Handwheel Specifications
ACTUATOR
SIZE
30 and
30E
34, 34E,
40, and 40E
45 and
45E
1. Tangential handwheel force required to produce the handwheel output force shown.
2. Brass operating nut and stainless steel screw.
HANDWHEEL DIAMETER
mm In. mm In. N lb N lb
200 7.87 0.24 6.1 179 40 5000 1125
250 9.84 0.21 5.4 286 64 10,000 2250
250 9.84 0.21 5.5 400 90 14,000 3150
4
TURNS PER mm/INCH
TRAVEL
RIM
FORCE
(1,2)
HANDWHEEL OUTPUT FORCE
Instruction Manual
D103048X012
3024C Actuator
June 2017
Installation
WARNING
Always wear protective gloves, clothing, and eyewear when performing any installation operation to avoid personal injury.
Personal injury or equipment damage caused by sudden release of pressure may result if the actuator assembly is installed
where service conditions could exceed the limits given in tables 1, 2, and 3 or the appropriate nameplates. To avoid such
injury or damage, provide a relief valve for overpressure protection as required by accepted industry and governmental
codes and good engineering practices.
To avoid parts damage, do not use a normal operating pressure that exceeds the Maximum Diaphragm Casing Pressure
(see table 1) or produces a force on the actuator stem greater than the Maximum Allowable Output Thrust (see table 2 or 3)
or Maximum Allowable Valve Stem Load.
Check with your process or safety engineer for any additional measures that must be taken to protect against process
media.
When ordered, the valve configuration and construction materials were selected to meet particular pressure, temperature,
pressure drop, and controlled fluid conditions.
Responsibility for the safety of process media and the compatibility of valve materials with the process media rests solely
with the purchaser and end user. Since some valve body/trim materials combinations are limited in their pressure drop and
temperature ranges, do not apply any other conditions to the valve without first contacting your Emerson Automation
Solutions sales office.
If installing into an existing application, also refer to the WARNING at the beginning of the Maintenance section in this
instruction manual.
A 3024C diaphragm actuator is normally shipped mounted on a valve. Refer to the appropriate valve instruction
manual when installing the valve in the pipeline. If the actuator is shipped separately or if it is necessary to mount the
actuator on the valve, perform the Actuator Mounting procedure given below. For information on mounting the
positioner, refer to the appropriate positioner instruction manual.
CAUTION
The 3024C actuators are designed to mount on push‐down‐ to‐close valves. Do not mount these actuators on any other
type of valve without first contacting your Emerson sales office
or Local Business Partner.
Mounting the Actuator on the Valve
The following procedure describes how to mount a 3024C actuator on a push‐down‐to‐close valve so that the actuator
stem and valve stem thread engagement allows full travel and proper shut‐off. Refer to table 4 and figures 6 and 7 for
actuator dimensions. Key numbers referenced in the following steps are shown in figures 8 and 9.
1. Provide a temporary method of applying diaphragm air loading pressure to the diaphragm to move the actuator
stem during adjustments.
2. Provide a vice or some other method of supporting the valve and the weight of the actuator during assembly.
3. Push the valve stem down until the valve plug is fully closed.
4. Screw the two stem locknuts (key 52) to the lower end of the valve stem thread.
5
3024C Actuator
June 2017
Figure 4. Actuator Mounting Components for Assembly with a Valve
Instruction Manual
D103048X012
W8484‐1
WARNING
When moving the actuator stem with diaphragm loading pressure use caution to keep hands and tools out of the actuator
stem travel path. Personal injury and/or property damage is possible if something is caught between the actuator stem and
other parts of the valve assembly.
Perform one of the following procedures as appropriate:
For a 3024C Air‐To‐Close Actuator with a Push‐Down‐to‐Close Valve:
a. Carefully place the actuator on the valve so that the yoke boss fits over the valve bonnet.
b. Screw the yoke lock nut onto the bonnet and tighten.
c. Lift the valve plug off the seat by the correct valve travel for the valve. This is stated on the nameplate or in table
1.
d. Place the stem connector half (key 50) approximately halfway between the actuator and valve stems but
observing the F dimension in table 5 so that any positioner lever (if fitted) is horizontal at mid‐travel. Be sure that
the actuator and valve stem threads are engaging the threads of the stem connector by at least the distance of
one diameter of the stem.
6
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