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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:

  • Allows for a less restrictive upstream valve cage design.
  • Achieves a 10-15 decibel (dB) noise reduction with no pressure drop.
  • Allows for smaller valve sizes and standard trim.
  • Reduces or eliminates station plugging.
  • ​Reduces ongoing operating and repair costs associated with specialized valve trims.
  • Minimizes fenceline noise and protects personnel.
  • Installs as an ‘add-on’ to existing equipment—without resizing.
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
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We Have the Valves You Need, When You Need Them
Proconex has an extensive inventory of control, isolation, and pressure relief/safety valves—all the brands you need. We stock most valves and related devices at one of our three regional warehouses and have access to many more through our Emerson partnership. When it comes to valve automation, we offer the largest portfolio of actuators and controls available in the market today. We have the applications experience and customization capabilities to find the optimum solution for your valve automation needs. In addition, we offer quick delivery and a range of services to keep your plant operating safely and efficiently.