Brochure

POWER INDUSTRY EXAMPLE:
RELIABILITY AND CONTROL RANGE
Application:
• Extraction steam turbine.
• Need for better control initially resulted in installation
of an NPS 16 segmented ball valve.
Challenge:
• Frequent throttling to maintain tight control caused
excessive seal, ball, and bearing wear.
• Goal was to go two years without shutting down the
turbine for maintenance.
Solution:
• NPS 18 Control-Disk valve installed in line after sizing
showed it would operate in the 25–70% travel area and
provide acceptable control range for installed gain.
• Control-Disk valve allows for no seal-to-disk contact or
wear when controlling as well as extends bearing life.
Results:
• Control-Disk valve was pulled out of the line eight
months after installation and the visual inspection
showed no disk, seat, or bearing wear.
• Diagnostic FlowScanner
™
results came back good.
• Only replacement was valve soft goods.
• Overall cost of repair decreased by $38,000 USD.
Fisher
®
Control-Disk Valves | 3
Proven Results
Designed for Reliability
Control-Disk valves can be equipped with Fisher actuators
and Fisher FIELDVUE
™
digital valve controllers. Complete
Fisher valve assemblies are designed, tested, and validated for
performance and reliability in the Emerson Innovation Center.
They help you keep your facility operational and on budget.
For better reliability, FIELDVUE digital valve controllers are
integral and linkage-less with fewer parts to wear. They can
capture and deliver diagnostic data to ValveLink
™
software,
providing you with an accurate picture of valve, actuator, and
digital valve controller performance.
Total Cost of Ownership
For new projects, Control-Disk valves have a lower initial
installed cost, provide a wide control range, and can fit into
tight spaces. They have high capacity and minimal flow
restrictions.
They can be used to replace poor performing HPBVs because
they share the same face-to-face dimensions, eliminating
costly piping changes.
For More Information
The next time you have valves that are performing poorly, are
a maintenance concern, or you need to specify cost-effective
control valves, consider Fisher Control-Disk valves. A local
Emerson sales office can provide additional information and
can help you take advantage of their many benefits.
From application expertise, to training, to quick replacement
parts to valve repairs, you can count on Emerson for quality,
service, and expertise.
METALS AND MINING EXAMPLE:
PRECISE CONTROL AND LOWER INSTALLED COST
Application:
• Water pressure and ow control in a steel mill coolant
system.
Challenge:
• Lack of control in process pressure caused end product
inconsistency.
• Nine installed HPBVs could not effectively control the
ow of water as required.
• $10,000 USD piping change cost per valve to change
from current HPBV to segmented ball valves.
• Goal was to install valves that would successfully
control the process and reduce installed cost.
Solution:
• Emerson suggested an NPS 8 Control-Disk valve.
• Control-Disk valve met current HPBV face-to-face
dimensions.
Results:
• Control-Disk valve was tested side-by-side with one
of the nine existing installations and performed to
specied requirements unlike the other HPBVs.
• Replaced remaining eight HPBVs within the year.
• Removed requirement for $90,000 USD in piping
changes needed for segmented ball valves.
• Provided precise control and helped eliminate end
product variability.
• Steel mill estimated that the nine installed Control-Disk
valves would potentially save them around $1,000,000
USD per year collectively.
Customer Proven
Scan this code to read
more quantified,
proven results from
real customers.