Reference Manual

D351836X012 / MW25 / H:QBR / March 2010
METALS & MINING
© Fisher Controls International LLC 2010 All Rights Reserved.
Fisher, and Control-Disk 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 specications of such products at any time without notice. Neither
Emerson, Emerson Process Management, nor any of their afliated 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.
NORTH AMERICA
Emerson Process Management
Marshalltown, Iowa 50158 USA
T 1 [phone]
F 1 [phone]
www.EmersonProcess.com/Fisher
LATIN AMERICA
Emerson Process Management
Sorocaba, Sao Paulo 18087 Brazil
T +(55)(15)238-3788
F +(55)(15)228-3300
www.EmersonProcess.com/Fisher
EUROPE
Emerson Process Management
Cernay 68700 France
T +(33) (0)3 89 37 64 00
F +(33) (0)3 89 37 65 18
www.EmersonProcess.com/Fisher
MIDDLE EAST & AFRICA
Emerson FZE
Dubai, United Arab Emirates
T [phone]
F [phone]
www.EmersonProcess.com/Fisher
ASIA PACIFIC
Emerson Process Management
Singapore 128461 Singapore
T +(65) 6777 8211
T +(65) 6777 0947
www.EmersonProcess.com/Fisher
SOLUTION
The Emerson account manager recommended the new Fisher Control-Disk
buttery valve for this challenging application. Its unique, patented disk prole
and true equal-percentage characteristics enable it to adapt to changing process
conditions and to provide control over a wide range. In fact, the valve provides
between 15% and 70% travel, without compromising capacity. This performance
represents a signicant improvement compared to standard buttery valve designs
(25% to 50% of travel).
The 8-inch Control-Disk valve shipped on time and has been working well since its
installation (summer 2009).
RESULTS
The Fisher Control-Disk valve improved backwash, ow control in the E.On-CHP
plant’s water-treatment system. Since it was installed, the plant has not lost any
lter media or experienced any down-time due to water problems. Best of all, the
Fisher valve’s performance has enabled E.On to meet requirements for steam for
the two soda-ash plants. E.On not only saved $5000/year, but also improved its
customer service, which is priceless.