Back To Top
Fisher™ Whisper Technology Fisher™ Whisper Technology

Offering the widest range of ground-breaking, highly efficient noise suppression solutions, Emerson's Fisher Whisper Technology products successfully minimize valve sounds. These products present an unbeatable duo of noise reduction and enhanced capacity that is versatile for all applications.

Decreasing Process Variability While Protecting Equipment, Employees, and the Environment

Decreasing Process Variability While Protecting Equipment, Employees, and the Environment

Elevated noise levels originating from valves and subsequent piping due to aerodynamic and hydrodynamic factors can pose threats to the safety of plant employees, compromise equipment durability, and make the facility susceptible to potential noise complaints and regulatory penalties. However, Emerson's pioneering noise reduction technologies can adeptly alleviate this noise burden, providing benefits in terms of space and cost-efficiency.

The Whisper Technology Line Up

Fisher ™ Whisper ™
NXV Trim
A 3D-manufactured trim that attenuates rotary valve noise

Key Features:

  • Up to -20 dBA acoustical attenuation is achievable depending on service conditions
  • Provides up to 80% more noise attenuation than other rotary valves
  • Optimized inlet contour minimizes flow capacity reductions and noise caused by turbulence
  • Elliptical channels allow for optimal flow separation by changing the shape of the flow stream as the ball rotates
  • Increased flow area of holes between trim channels improves pressure distribution and reduces velocities of process material 
  • Compatible with gas, vapor, or steam, and is offered in multiple valve sizes and pressure class ratings.
  • The additively manufactured attenuator features a rugged fabrication weld to provide structural integrity

learn more
Fisher ™ Whisper ™
NXG Trim
A 3D-manufactured trim that attenuates globe valve noise

Key Features:

  • Optimized design allows for up to 30 dBA noise reduction with maximized flow efficiency
  • Provides 20% more flow capacity than previously possible, allowing smaller globe valves to be applied where facility space was previously limited
  • Additively manufactured lattice trim design eliminates jet structure limitations and increases flow capacity
  • Compatible with gas, vapor, or steam, and is offered in multiple valve sizes and pressure class ratings
  • Quick change trim allows fast and easy inspection of the cage without taking the valve body out of the pipeline
  • Hardened materials of construction are standard to provide exceptional wear resistance
Learn more
Fisher™ 6060 WhisperTube Modal Attenuator
A full-bore noise reduction solution that attenuates noise inside the pipe for all upstream sources

Key Features:

  • Allows for up to a 10-15 dBA noise reduction with a negligible pressure drop and no impact on process flow
  • Used in applications downstream of control valves or any other equipment contributing to system noise
  • Patented design with internal acoustic cavities of varying sizes reduce noise across a broad range of frequencies
  • Cast internal drain channel ensures any potential liquid buildup can be removed, ensuring optimum performance
  • Straight-through flow geometry, with inside diameter that matches the pipe, accommodates pigging operations when required for cleaning and maintenance
  • Designed for a wide range of fluid flow rates, pressures and temperatures
  • Easy maintenance and installation with the removable cylindrical stainless-steel screen and threaded lifting provisions
Learn More
Get in touch with an expert, find your nearest office location, or send us a note about your next project!
Talk to one of our experts in this field
1-800-265-1005
CLICK TO CONTACT
CLICK TO CONTACT