Upgrade for Fisher 7600 Valve and Actuator

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PS Sheet
PS 51.3:Control−Disk(A)
October 2009
7600 Replacement
Upgrade for Fisherr 7600 Valve and Actuator
Description
Replacing a Fisher 7600 valve assembly can be
difficult. The 7600 is an obsolete product for
commercial applications and therefore duplicate
replacements for the original valve and actuator are
not available. Also, the current HPBV face−to−face
standards are generally different than the 7600 so
finding a valve that fits between the same flanges
can be problematic.
The built in features available in the Fisher
Control−Diskt valve platform can more readily
address this need with flexible length seal retainer
designs.
For special flange connections such as RTJ, or for
larger shaft classes, a one piece retainer−less body
without a seal can be provided. See figure 2.
The Control−Disk valve will provide the expanded
control range required when replacing either the
7600 Fishtailr or conventional disc constructions.
Upgrade of the entire valve and actuator package to
current designs will complete this performance
enhancing upgrade.
Customer Value
Upgrade to the entire valve and actuator package
without incurring additional costs for piping changes.
Replacing the obsolete 7600 CL150−300 NPS 2−12
valves with Control−Disk, 8580, or A81 valves will
reduce the maintenance costs of these valves and
enhance performance, both now and in the future.
Improved performance of the control valve will
favorably impact process loop variability.
Proposed Solution
Soft or metal seals can be specified for tight shutoff.
The Seal Retainer option for the Control−Disk, 8580,
or A81 valve will meet the 7600 face−to−face
dimensions.
Extend the upgrade to include the live−loaded
packing constructions by specifying ENVIRO−SEALr
and include FIELDVUEr digital valve controllers.
This upgrade solution includes the option to select a
flow ring, soft seal, or metal seal construction. This
option addresses the shaded area of table 1 and is
shown in detail in figure 1.
Related Documentation
www.Fisher.com
The upgrade will reduce maintenance costs and
downtime with improved availability of spares and
repair services.
Product Bulletin 51.3:Control−Disk, D103297X012
Fisher Control−Disk Rotary Valve IM, D103298X012
PS Sheet
PS 51.3:Control−Disk(A)
October 2009
7600 Replacement
Upgrade Solutions
Flow Ring, Soft Seal, and Metal Seal Constructions
The A81, 8580, and Control−Disk valves can be supplied with these long face−to−face seal retainers (see
figure 1) to match the dimension of the existing 7600 valve (see shaded cells in table 1 for availability).
Figure 1. Optional Configurations for Matching Fisher 7600 Face−to−Face Dimensions
Retainer−less Design
With a one−piece body made from plate, this retainer−less design (see figure 2) can meet all of the 7600
face−to−face dimensions listed in table 1, as well as provide any special face−to−face dimensions or special
flange connections, i.e. RTJ or FF.
This design uses the same trim parts as an A81, 8580, or Control−Disk Valve.
Figure 2. Special Retainer−less Design for Matching Fisher 7600 Face−to−Face Dimensions
2
PS Sheet
PS 51.3:Control−Disk(A)
October 2009
7600 Replacement
Table 1. Fisher 7600 Face−to−Face Dimensions
VALVE SIZE
STANDARD FACE−TO−FACE DIMENSIONS, INCHES
7600, Shaft Class
ASME CLASS
NPS
5
6
7
2
150-300
2.00
2.50
---
---
---
---
3
150-300
2.00
2.50
3.00
3.00
---
---
4
150-300
2.50
3.00
3.00
4.00
---
---
6
150-300
2.50
3.00
3.00
4.00
4.00
---
150
3.00
3.00
4.00
4.00
4.50
---
300
3.00
3.00
4.00
4.00
4.50
---
150
3.00
4.00
4.00
4.50
4.75
6.00
300
3.00
4.00
4.50
4.50
5.50
6.25
150
3.00(1)
4.00
4.00
4.50
5.00
6.00
300
3.00
4.00
4.00
4.50
5.50
6.25
8
10
12
2
3
4
Note: The shaded areas indicate where the seal retainer option applies.
1. Standard 8580 or Control−Disk Valve should be used; no special seal retainer is required.
3
PS Sheet
7600 Replacement
PS 51.3:Control−Disk(A)
October 2009
Note
Neither Emerson, Emerson Process
Management, nor any of their affiliated
entities assumes responsibility for the
selection, use, or maintenance of any
product. Responsibility for the
selection, use, and maintenance of any
product remains with the purchaser
and end user.
Fisher, Control−Disk, and FISHTAIL are marks owned by one of the companies in the Emerson Process Management business division 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
are not 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 upon request. We reserve the right to modify or improve the designs or
specifications of such products at any time without notice. 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 product remains
solely with the purchaser and end user.
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
EFisher
4
Controls International LLC 2009; All Rights Reserved
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