Management of Change Guide: Replacement of Fisher FieldQ Actuators with Bettis RPE Series Actuators
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Management of Change Guide
Replacement of Fisher™ FieldQ™ Actuators
with Bettis™ RPE Series Actuators
Table of Contents
Management of Change ..................................2
Background ....................................................2
Bettis RPE Actuators ........................................................... 2
FieldQ Actuators ................................................................. 2
Converting from FieldQ to Bettis RPE Actuators .................. 2
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Question and Answer Checklist .......................3
Comparison of FieldQ Actuators with NAMUR
Adaptation Plate to Bettis RPE Actuators ........5
Torque Range Differences ................................................... 5
Actuator Sizing ................................................................... 5
QC Control Modules ........................................................... 5
Weights and Dimensions ................................................... 6
Special Congurations and Non-Standard Options .............. 8
Conclusion ......................................................8
Additional Resources ......................................9
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
Bettis RPE Actuators
Emerson Automation Solutions offers the Bettis RPE Series actuator, a robust
workhorse actuator design for long life even in harsh environments. The RPE Series
actuator has a heavy-duty cast construction and polyurethane coating for excellent
corrosion resistance.
MOC: Bettis RPE Series Actuators
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The RPE Series actuator can be installed on rotary-shaft valve bodies for throttling
or on-off applications. Dual ISO 5211 mounting patterns allow low-prole direct
mounting to valves. Drive inserts on the valve ange make direct mounting exible,
either for square, at head, or round with key way stems. It offers a VDI/VDE 3845
(NAMUR) solenoid interface and top accessory interface.
The high-grade aluminum pinion on Bettis RPE Series actuator provides the best
combination of corrosion resistance, high strength, and a lightweight construction
as well as providing protection against galvanic corrosion. One-piece blow-out
proof, pressure balanced, pinion allows safe in-eld re-conguration from Fail-Close
to Fail-Open. Precision dual stroke adjustment provides accurate and intuitive end
of stroke adjustment for the Open and Closed valve position.
FieldQ Actuators
The FieldQ (and Bettis Q-Series) is designed to be an actuator with integrated
control modules. For customers that wanted to use the FieldQ actuator without
the integrated control module, the actuator was available with an optional NAMUR
adaptation plate. This adapter plate offers the customer a solenoid interface
according to the VDE/VDI3845 (NAMUR) standard.
Converting from FieldQ to Bettis RPE Actuators
Bettis RPE Series actuators can directly replace FieldQ Series actuators with the
NAMUR adaptation plate for valve automation for most applications.
If the FieldQ actuator was tted with integrated control modules, then we
recommend staying with the FieldQ brand or move to the Bettis Q-Series.
2
Contained in this guide are two sections, the rst is a question and answer section
to help end users complete Management of Change approval documents when
replacing a FieldQ Series actuator with Bettis RPE Series. The second section is a
comparison of the Bettis RPE and FieldQ actuators.
Question and Answer Checklist
Q: Does the proposed modication cause any changes to the piping and
1
2
instrumentation diagram (P&ID)?
A: No. There will be no change in the existing P&IDs.
Q: Does the proposed modication change process chemistry,
technology, or operating and control philosophies?
A: No.
MOC: Bettis RPE Series Actuators
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Q: Does the proposed modication change how the existing plant is
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4
5
6
7
8
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.
Q: Does the proposed modication change the process description?
A: No.
Q: Have the codes and standards to which the new equipment was
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.
3
Q: Does the proposed modication introduce new equipment items that
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10
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require periodic predictive maintenance?
A: No. These equipment items will require the same periodic predictive
maintenance as required by the old equipment items.
Q: Does the proposed modication change existing operator training
requirements?
A: No. The actuator operations do not change.
Q: Does the proposed modication introduce new equipment items
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 for maintenance departments
that are specic to the new Bettis RPE equipment items.
MOC: Bettis RPE Series Actuators
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Q: Does the proposed modication permanently remove the spares for
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13
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existing pieces of equipment?
A: No. The Service kits for FieldQ actuators remain available for the next
5 years. Note that the service kits for FieldQ Release 1 and Bettis RPE
are not interchangeable.
Q: Does the proposed modication require welding work to be
performed?
A: No.
Q: Does the proposed modication change the inspection scope or
inspection interval?
A: No.
4
Comparison of FieldQ Actuators with NAMUR Adaptation Plate to Bettis RPE Actuators
The Bettis RPE Series actuator can be a direct replacement for the FieldQ actuator
with NAMUR adaptation plate. These actuators offer the same form, t, and
function. While these actuators have slight design differences, noted below, they
both achieve the same torque output to turn the valve and are suitable for use in
the same applications. (Note, there are minor torque differences only for the two
largest FieldQ actuator sizes.)
The Bettis RPE actuator offers an extended torque range compared to FieldQ,
allowing the product line to cover more valve applications.
Torque Range Differences
The Bettis RPE actuator offers 3 additional models sizes compared to FieldQ
actuator, allowing Bettis RPE to cover a wider range of valve applications.
MOC: Bettis RPE Series Actuators
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The torque output of comparable sizes is the same for sizes 40 to 600. Therefore,
as an example, a FieldQ actuator size Q100 with spring set 4 can be replaced with a
new Bettis RPE Series size 100 with spring set 40.
However, when replacing FieldQ sizes Q950 and Q1600 with Bettis RPE Series, we
recommend discussing with your Emerson sales ofce which spring set should be
selected. It is possible that you will need to select a larger spring set to achieve the
required torque output. Reference the Bettis RPE-Series product data sheet to view
torque tables.
Actuator Sizing
With the new torque gures for the Bettis RPE actuator, we have resized all the
applicable valves and updated all the actuator to valve mappings available in
Catalog 14.
QC Control Modules
The FieldQ actuator is designed to be used with special “QC Control Modules,”
which contain all the required controls to operate the automated valve. The FieldQ
actuator may also be used without the control modules by installing a NAMUR
adapter plate. This adapter plate allows the user to direct mount a NAMUR solenoid
to the actuator or to direct pipe air to the actuator.
5
The Bettis RPE Series actuator uses standard NAMUR air connections for all model
4X
M5x8
2x
1/4”
24
32
BSP
4
C1
C2
C3
4
C4
C5
4X
M5x8
2x
1/4”
24
32
BSP
4
C1
C2
C3
4
C4
C5
B1
B3
30
4x
M5x8
M6x12
B2
I
C'
T
M5x8
30
H
2x 1/4"BSP
M5x8
60
24
32
4
F
E
D
4
G
M6x12
C
90
P2
P1
M1
K
M2
N
±0.5
2x 1/4"BSP
M5x8
60
24
32
4
F
E
D
4
90
P2
P1
M1
K
M2
N
±0.5
sizes. There is no option to mount the QC control modules. If you intend to use QC
modules for actuator control, then you should only select a FieldQ or Bettis Q Series
actuator.
MOC: Bettis RPE Series Actuators
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Figure 1. Bettis RPE Series Actuator Mounting Positions
Weights and Dimensions
The below comparison shows that many dimensions for Bettis RPE actuator
decreased versus the FieldQ actuator. Where dimensions increased, it is only
a marginal increase. In most applications, site clearances will not prohibit the
replacement of a FieldQ actuator with the Bettis RPE Series actuator.
A2 (DA)
A3
A4
Figure 2. Metric Dimension Comparison
A8
A6
A5
4
A (QD)
6
B (QS)
D
C'
C
J
H
I
MOC: Bettis RPE Series Actuators
Dimension in mm Q40 Q65 Q100 Q150 Q200 Q 350 Q600 Q950 Q1600
Length SR -10 -32 -7 -7 4 -6 57 198 164
Length DA 47 49 66 18 23 22 29 34 15
Height Housing 8 7 -10 7 2 10 3 -8 -35
Height Indicator 2 1 -17 1 -3 5 3 -14 -41
Width Housing -8 -10 -12 -13 -11 -16 -14 5 38
Width to Sol. Interf. -20 -23 -24 -28 -27 -34 -32 -16 -15
-20 Bettis RPE is smaller than FieldQ
8 Bettis RPE is larger than FieldQ
Table 1. Envelope Dimension Comparison (Metric)
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Dimension in mm
Bettis RPE Actuator Sizes
40 65 100 150 200 350 600 950 1600 2500 4000
Length SR A1 192 217 247 304 362 385 476 658 732 877 959
Length DA A2 192 217 247 235 265 284 356 400 462 550 649
Height Housing A3 112 124 131 157 163 201 248 268 302 354 389
Height Indicator A4 139 151 158 185 191 230 292 305 339 392 427
Width A5 82 92 103 116 124 161 195 239 306 350 400
Width A6 55 58 64 69 72 85 102 131 149 170 196
Table 2. Envelope Dimensions for Bettis RPE Series Actuator
Dimension in mm
Q40 Q65 Q100 Q150 Q200 Q350 Q600 Q950 Q1600
Length SR B QS 202 249 254 311 358 391 419 460 568
Length DA A QD 145 168 181 217 242 262 327 366 447
Height Housing C 104 117 141 150 161 191 245 276 337
Height Indicator C’ 137 150 175 184 194 225 289 319 380
Width Housing H 90 102 115 129 135 177 209 234 268
Width to Sol. Interf. I 75 81 88 97 99 119 134 147 164
Table 3. Envelope Dimensions for FieldQ Actuator
FieldQ Actuator Models
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MOC: Bettis RPE Series Actuators
Special Congurations and Non-Standard Options
Declutchable Manual Override Actuator with Handwheel and Bypass
Many of the FieldQ actuator options, such as different temperature trims or
different fail actions, are also available under Bettis RPE Series actuator. Some
other options may be available for only a part of the RPE actuator range. For help
replacing a FieldQ actuator with special congurations or non-standard options,
please consult your Emerson sales ofce.
Conclusion
The Bettis brand has represented leadership in pneumatic actuation for over 60
years. The Bettis RPE Series is an established rack and pinion actuator with high
performance and long life in demanding applications. In most applications, the
Bettis RPE Series actuator is a suitable direct replacement for a FieldQ actuator.
Feature Comparison FieldQ (NAMUR) Plate Bettis RPE
Operating Pressure Double-Acting:
2 to 8 bar / 30 to 120 psi
Spring-Return:
- with maximum spring set 6 to 8 bar /
87 to 120 psi
- with reduced spring set
3 to 8 bar / 43 to 120 psi
Travel Adjustment Dual stroke adjustment on pinion top Dual stroke adjustment on pinion top
Overtravel: +3° at each end of stroke Overtravel: +5° at each end of stroke
Inwards travel: 15° at each end of stroke Inwards travel: 10° at each end of stroke
Change Action Yes, no additional parts Yes, no additional parts
Mounting Interfaces
Top VDE/VDI3848-2 NAMUR VDE/VDI3848-2 NAMUR
Solenoid VDE/VDI3848-2 NAMUR VDE/VDI3848-2 NAMUR
Valve ISO5211 ISO5211
Drive Sq. Orientation
(Insert)
Interface Threads
Air Connection: 1/4” BSP for metric units 1/4” G/BSP for metric units standard
Actuator Sizes 9 Sizes Q40 to Q1600 11 sizes 40 to 4000
Default parallel, optional diagonal or
valve stem dedicated
Metric threads for metric units Metric threads for metric units
UNC for imperial units *optional UNC for imperial units
1/4” NPT for imperial units *optional 1/4” NPT for imperial units standard
Double-Acting:
2.9 to 120 psig (0.2 to 8.3 barg)
Spring-Return:
- with maximum spring set:
87 to 120 psig (6 to 8.3 barg)
- reduced spring quantity:
43.5 to 120 psig (3 to 8.3 barg)
sizes 25-600
Overtravel: +3° at each end of stroke
sizes 950-4000
Default parallel, optional diagonal or
valve stem dedicated
*optional 1/2” G/BSP for sizes 950-4000
*optional 1/2” NPT for sizes 950-4000
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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)
MOC: Bettis RPE Series Actuators
Temperature Ranges Standard: -4°F to +176°F (-20°C to 80°C) Standard: -4°F to +176°F (-20°C to 80°C)
Low temperature: -40°F to 176°F (-40°C
to 80°C)
High temperature: 4°F to 250°F (-20°C
to 120°C)
Table 4. Overall Comparison
Low temperature: -40°F to 176°F (-40°C
to 80°C)
High temperature: 14°F to 250°F (-10°C
to 120°C)
Note: Responsibility for proper selection, use, and maintenance remains solely
with the purchaser and end user.
Additional Resources
See the following resources to learn more or contact your local Emerson sales ofce.
Bettis RPE datasheet
Bettis RPE IOM instruction manual
Bettis RPE product webpage
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Visit Fisher.com to
nd an Emerson sales
contact in your area.
http://www.Facebook.com/FisherValves
http://www.Twitter.com/FisherValves
Emerson Automation Solutions
Marshalltown, Iowa 50158 USA
Sorocaba, 18087 Brazil
Cernay, 68700 France
Dubai, United Arab Emirates
Singapore 128461 Singapore
http://www.YouTube.com/user/FisherControlValve
http://www.LinkedIn.com/groups/Fisher-3941826
© 2020 Fisher Controls International LLC. All rights reserved.
Fisher, FieldQ, and Bettis are marks owned by one of the companies in the Emerson Automation
Solutions business unit of Emerson Electric Co. 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, nothing herein is to be construed as a warranty
or guarantee, express or implied, regarding the products or services described herein or their
use, performance, merchantability or tness for a particular purpose. Individual results may vary.
All sales are governed by our terms and conditions, which are available upon request. We reserve
the right to modify or improve the designs or specications of our products at any time without
notice. Responsibility for proper selection, use and maintenance of any product or service remains
solely with the purchaser and end user.
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