Brochure

The Silent Treatment | 9
offers proven attenuation of aerodynamic noise in
vapor, gas, or steam applications involving low to
medium pressure drops. The Whisper Trim I cage
offers economical, dependable noise attenuation in
a variety of globe and angle valve bodies. It is widely
used across all process industries, is incredibly
effective, and offers great application flexibility.
The shape, size, and spacing of the passages in the
Whisper Trim I cage reduce noise and associated
vibration across the control valve. These passages
break up turbulent fluid streams and ensure exit jet
independence, thereby reducing noise.
n Up to 18 dBA of attenuation
n ASME Class 125–900
n NPS 1–12
n Available in Fisher easy-e
™
control valves
PROVEN RESULTS
Fisher
®
Whisper Trim
™
I Cage
PRODUCTION: Steam
APPLICATION: Steam letdown
CHALLENGE: The previous general service valve generated high noise and vibration, which exceeded
fenceline noise requirements and caused process system damage.
SOLUTION: Fisher easy-e valve with a Fisher Whisper Trim I cage.
RESULTS: Reduced fenceline noise to an allowable level and eliminated vibration-related damage.