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Fisher™ WhisperTube Fisher™ WhisperTube
Protect Your Operators and the Community With Fisher™ WhisperTube Modal Attenuators

Protect Your Operators and the Community With Fisher™ WhisperTube Modal Attenuators

Valve and pipeline aerodynamic noise causes concern for plant operators and maintenance personnel because it can affect plant availability and profitability. High noise levels can induce safety concerns for plant personnel and can lead to equipment damage through vibration and process control issues. Elevated noise at the fenceline can also disrupt the surrounding community.





Key Benefits:

  • Achieves a 10-15 decibel (dB) noise reduction with no pressure drop.
  • Installs as an ‘add-on’ to existing equipment—without resizing.
  • Allows for smaller valve sizes and standard trim.
  • Minimizes fence line noise and protects personnel.
  • Allows for a less restrictive upstream valve cage design.
  • Reduces or eliminates station plugging.
  • ​Reduces ongoing operating and repair costs associated with specialized valve trims.
Broadband Noise Reduction
Broadband Noise Reduction
Cavities of varying sizes surround a cylindrical screen. Acoustic waves enter the cavities, interact, and reflect off the internal body surfaces. The waves cancel each other out, resulting in reduced noise.
Straight-Through Design
Straight-Through Design
The WhisperTube features a straight-through flow geometry with inside diameter that matches the pipe. It accommodates pigging operations when required for cleaning and maintenance.

View Product Specifications

View Specs