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.