Emerson Fisher™ WhisperFlo™ Aerodynamic Noise Attenuation Trim

Product Description

Fisher WhisperFlo trim represents state-of-the-art solutions for applications

that demand noise attenuation. Control valves with WhisperFlo trim provide

additional attenuation for aerodynamic noise in very demanding vapor or 

gas applications with high pressure drops. A WhisperFlo cage with an appropriately

sized valve body is designed to reduce the noise level up to -40 dBA.

For special applications, -50 dBA attenuation can be achieved

Features

• Use of WhisperFlo trim provides excellent noise attenuation for very

demanding applications. It should be considered for those applications

that more conventional solutions cannot reach.

• Quick change trim allows fast and easy inspection of the cage without taking 

the valve body out of the line. WhisperFlo trim is interchangeable

with standard control valve trim.

• Hardened materials or a unique wear surface construction are standard

to provide excellent wear resistance. The three dimensional flow path,

pressure-staging, and special passage shapes uniquely combine to equalize energy dissipation.

• WhisperFlo trim has higher capacity at conventional valve travels and

port sizes than tortuous path designs.

• Standardized port sizes provide capability to retrofit existing valves.

Specifications

Critical Service Noise Abatement

Flow Characteristics Linear

Other Configurations Contact your local Emerson business partner or sales office

to learn about additional specifications or options for this product.