Management of Change
Replacement of Fisher™ 1052 Actuators
with 2052 Actuators
Table of Contents
Management of Change ..................................2
Background ....................................................2
Question & Answer Checklist ..........................2
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Comparison of 1052 and 2052 Actuators ........4
Compact Design ................................................................. 4
Simplied Sizing and Selection ........................................... 5
External Travel Adjustment ................................................. 7
Compatibility and Mounting ............................................... 7
Bench Set ........................................................................... 8
Mounting Orientations ....................................................... 8
Options .............................................................................. 9
Conclusion ......................................................9
Additional Resources .....................................10
Management of Change
Management of Change (MOC) is a procedure used to proactively manage changes
that have the potential to impact safety or the process within a plant. Evaluating
new techniques for improving MOC approval procedures can have an impact on
plant efciency. Historically, upgrading obsolete products or replacing existing
process control equipment had been delayed or abandoned due to the extensive
paperwork involved in completing a complex MOC approval sheet.
Background
Emerson Automation Solutions introduces the Fisher 2052 spring-and-diaphragm
rotary actuator. The small, compact Fisher 2052 actuator reduces valve/actuator
envelope dimensions to provide greater valve installation versatility for both skids
and tight processing lines where space is at a premium.
The Fisher 2052 actuator can be installed on rotary-shaft valve bodies for throttling
or on-off applications. The actuator linkage features a clamped shaft lever and a
single pivot point to reduce lost motion between the actuator and valve. The result
is a 0.5% or less typical variability for a Fisher rotary control valve assembly.
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In addition to its compact size, the Fisher 2052 actuator delivers several operations
and maintenance advantages. It has an inherent fail-safe position on loss of
operating air. In contrast to piston style actuators that rely on O-ring seals, the
double-sided diaphragm in the 2052 provides extended service life. **
The Fisher 2052 actuator offers a nested spring design that requires no bench set
adjustment, simplifying the actuator selection process. Powder paint coating is
standard and offers an excellent corrosion-resistant nish on all external steel and
cast iron parts. The Fisher 2052 actuator is available in three sizes, accommodating
shaft sizes 12.7 to 38.1 mm (1/2 to 1-1/2 inch).
Contained in this document are two sections. First is a question and answer section
to help end-users complete Management of Change approval documents when
upgrading to a 2052 actuator. Secondly, there is a comparison of the Fisher 2052
and 1052 actuators. In this section, in addition to the similarities between these
two actuators, you will see a number of advantages the 2052 design has compared
to the 1052 design. These comparisons demonstrate why we believe the 2052
actuator will become the standard in rotary pneumatic actuation.
Question & Answer Checklist
Q: Does the proposed modication cause any changes to the piping and
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instrumentation diagram (P&ID)?
A: No. There will be no change in the existing P&IDs.
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Q: Does the proposed modication change process chemistry,
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technology, or operating and control philosophies?
A: No.
Q: Does the proposed modication change how the existing plant is
operated?
A: No.
Q: Does the proposed modication change process ows?
A: No. The modication does not change the process ow direction.
Q: Does the proposed modication change existing pressure relief cases?
A: No.
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Q: Does the proposed modication change the process description?
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A: No.
Q: Have the codes and standards to which the new equipment was
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designed changed?
A: No.
Q: Does the proposed modication change the materials of construction,
such as a change in material form (cast, forged, or alloy)?
A: No.
Q: Does the proposed modication introduce new equipment items that
require periodic predictive maintenance?
A: No. The new equipment items will require the same periodic
maintenance as required by the old equipment items.
Q: Does the proposed modication change existing operator training
requirements?
A: Yes. The Emerson network of Local Business Partners and sales ofces
offer local training and support to ensure operators, maintenance
personnel, and instrument technicians are fully trained on the 2052
pneumatic actuator.
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Q: Does the proposed modication introduce new equipment items
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that require spare parts, training manuals, maintenance procedures
or training to teach the maintenance department how to maintain
them?
A: Yes. The new equipment items require spare parts, training manuals,
maintenance procedures, and training to maintenance departments
that are specic to the new Fisher equipment items.
Q: Does the proposed modication permanently remove the spares for
existing pieces of equipment?
A: Yes. The spare parts of the existing equipment items have to be
removed from the plant.
Q: Does the proposed modication require welding work to be
performed?
A: No.
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Q: Does the proposed modication change the inspection scope or
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inspection interval?
A: No.
Comparison of 1052 and 2052 Actuators
The 2052 and 1052 pneumatic actuators both perform the same task but the 2052
actuator has considerably better functionality and provides new features, making
it more appealing to the customer. The following section identies and compares
some of these features.
Compact Design
The 2052 rotary actuator uses high pressure, nested springs, which allows for a
lower overall height and diameter per torque output. This ensures reduced valve/
actuator envelope dimensions leading to greater mounting versatility for both skids
and process plants, where space is at a premium. See Figure 1 for valve dimensions.
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Figure 1. 1052 and 2052 Actuator Size Comparison
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Simplied Sizing and Selection
The Fisher 1052 actuator has ve different sizes and three design platforms
(20,33,40-70). The Fisher 2052 has three different sizes and a single design
platform. This substantially eases the process of sizing and reduces the number of
spare components.
Size 1 Size 2 Size 3
Figure 2. Actuator Simplicity - Size Reduction
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Shaft Diameter 2052 Size
Inches Size 1 Size 2 Size 3
1/2
NPS 1-45/8
NPS 2-103/4
1
1-1/4
1-1/2
1-3/4
2
Table 1. Actuator Simplicity - Valve Size Matches
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NPS 3-14
1051/1052
Torque by Size
Size
Torque
Outputs
Size 1 Size 2 Size 3
1 Spring 2 Spring 1 Spring 2 Spring 1 Spring 2 Spring
228 456 935 1870 2890 5583
1052/20 160 X
1051/22 287 X X
1052/33 440 X
1051/40 830 X
1052/40 1030 X X
1051/60 2320 X
1052/60 3090 X X
1052/70 5079 X
“X” denotes compatible torque outputs
Note: The 1052 size 70 remains available for applications that require push-down-to-close torques. The standard push down to open torque
value is listed here.
Depicts the torque output from each of the three 2052 sizes versus the torque output from the comparable 1052 sizes.
Table 2. 1051/2052 Actuator Torque Crossover
2052 Torque by Size/Springs
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Operating Pressure
Actuator Size and
Action
2 barg (29 psig)
Torque Torque
(1)
4 barg (58 barg)
N + m Ibf + in N + m Ibf + in
1 (PDTO, PDTC) 25,5 225 51.2 453
2 (PDTO, PDTC) 105 930 210 1860
3 (PDTO) 327 2890 631 5583
3 (PDTC) 280 2479 584 5173
1. Operating pressure up to 3 barg (44 psig) is allowable for single spring connection.
2. Operating pressure up to 5 barg (73 psig) is allowable for dual spring construction.
Table 3. 2052 Actuator Torque Specications
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(2)
Actuator
Size
1/4 NPT 1/2 NPT 3/4 NPT G 1/4
Pressure Connection
1 standard optional not available optional
2 standard optional not available optional
3 not available standard optional not available
Table 4. 2052 Actuator Pressure Connections
External Travel Adjustment
Adjustable travel stops are standard with an optional lockout feature. This provides
the ability to adjust or change the travel range without removing the actuator or
the addition of extra parts. The optional lockout feature locks the lever in the spring
fail position.
Compatibility and Mounting
The Fisher 2052 rotary actuator is compatible with Fisher FIELDVUE™ DVC2000,
DVC6200, and DVC6000 digital valve controllers, and Fisher 3610J and 3620
positioners. Linkage-less feedback, via a contact-less magnetic array, from the
lever to the end-mounted is available with the FIELDVUE DVC2000 digital valve
controller. Integral window mounting of the DVC6000, DVC6200, DVC6000, 3610J,
and 3620J is also available.
The 2052 actuator can be mounted directly onto non-spline shafts, such as Square
and Double D. This allows the actuator, with its enhanced control, to mount on a
wider range of valves conforming to ISO 5211.
The 1052/1051 actuator bracket is not interchangeable with the 2052 actuator. The
2052 actuator does not have the shaft bushing on the mounting bracket.
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Bench Set
The nested springs in the 2052 actuator do not require the bench set to be adjusted
as was required with the 1052 actuator. This simplies the actuator selection
process (see Figure 3), sizing, and maintenance. For complete 2052 actuator
spring data, please see the 2052 Supplemental Actuator Sizing and Stroking Speed
Information PS Sheet, Catalog 14 Page D-135(A) from November of 2009.
Mounting Orientations
The 2052 actuator can be mounted in the same orientations as the 1051/1052
actuator products.
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Figure 3. 2052 Actuator Mounting Options
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Options
The 2052 actuator has several different options including the following:
• Top-mounted hand wheel– for infrequent use as a manual actuator.
• Declutchable handwheel actuator– an end-mounted manual actuator can be
used to provide on-site control and to provide override capabilities.
• Actuator locking mechanism– can be used to keep the actuator in the locked,
spring fail position during maintenance.
Conclusion
Fisher control valves have led the industry for more than 130 years with reliable
control valves, actuators, and instruments. With a simplistic and efcient design, the
Fisher 2052 pneumatic actuator will provide the same reliability and service life as its
predecessor while easing service, selection, and setup.
Feature 1052 Actuator 2052 Actuator
Operating Pressure
Travel Adjustment
Changing Action
0-18, 33, 40, or 55 psi 2 bar (29 psi) or 4 bar (58 psi)
Size 33 external, all others
internal via turnbuckle or screw
Yes, no additional parts Yes, no additional parts
All external
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Instrument Mounting
Valve Mounting
Air Connection
Actuator Sizes
Diaphragm Materials
Cycle Life
Lock Out Feature
Travel Stops
Note: Responsibility for selection, use, and maintenance remains with the customer or end-user, as applicable.
Table 5. 1052 and 2052 Actuator Features
DVC/3610 window - UNC
thread
Style F with clamped lever Style F with clamped level plus
20-60-1/4 standard; 1/2 option;
70-1/2 standard
5 sizes, 3 design platforms (20,
33, 40-10)
Nitrile; -40° F to 180° F; Silicone
available for up to 300° F
Depends on spring selection Designed for 1 million plus cycles
Optional Optional
Standard with 30° travel stop
capability; option for sizes 40,
60, and 70
DVC/3610 window - metric
thread, plus Namur end mount
ISO 5211
Size 1 and 2 - 1/4 standard; 1/2
option; Size 3-1/2 standard
3 sizes, 1 design platform
E88 standard; -50° F to 180° F;
Silicone available for up to 300° F
Standard with 30° travel stop
capability
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on dark backgroundson light backgrounds
standard
no gradients
watermark
stacked logo (for sharing only)
standard
no gradients
watermark
stacked logo (for sharing only)
Additional Resources
See the following resources to learn more or contact your local Emerson sales ofce to
speak to a representative.
• 2052 Product Bulletin (D103295X012)
• 2052 Actuator Instruction Manual (D103296X012)
• Fisher Rotary Valves Brochure (D351601X012)
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contact in your area.
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