Fisher Gray Logo

Proven Aerodynamic Noise Control

Fisher™ Whisper Trim™ I Cage

Fisher™ Whisper Trim™ I Cage

Fisher™ Whisper TrimI Cage

Fisher Whisper Trim I cages offer proven aerodynamic noise control that is effective for vapor, gas, or steam flow applications. The Whisper Trim I cage utilizes multiple orifices of a special shape, size, and spacing to minimize noise generated by the flow of vapor, gas, or steam through a control valve. Using a Whisper Trim I cage, in conjunction with a properly sized valve body, can substantially reduce the noise level below that of valves with standard trim.

Documents & Drawings 


  • The Whisper Trim I cage offers excellent noise reduction and high flow capacity. This combines with the well-known control and durability offered by standard Fisher easy-e™ trims to give optimum overall performance at a minimum investment.
  • Use of a Whisper Trim I cage in a properly sized valve can result in up to 18 dBA noise reduction compared to the same valve with standard trim. An 18 dBA reduction in noise represents approximately 98 percent reduction in sound intensity. This is similar to moving away from the noise source by 24m (78 ft).
  • Quick change trim allows fast and easy inspection or replacement of the cage without taking the valve body out of the pipeline. It is interchangeable with the cages in all standard easy-e control valve bodies.
  • Hardened material is standard to provide exceptional wear resistance.

Click to get more information on the Fisher Whisper Trim I Cage



Critical Service:
Noise Abatement

Flow Characteristics:

Other Configurations:
Contact your local Emerson business partner or sales office to learn about additional specifications or options for this product.

Click to get more information on the Fisher Whisper Trim I Cage

Would you like to chat with an expert?

Got a Question?
Career Inquiry
Reliability Inquiry
Career Inquiry | VAC
Events Mailing List
[contact-form-7 id="202099" title="Training & Events Mailing List"]
Alarm Services Inquiry
Mechanical Services Inquiry
Chat with an Expert Chat & Office hours:
Mon-Fri | 8am - 5pm

If you have a job related inquiry, please reach out to

CLICK HERE for inquiries outside of Canada