WhisperFlot Trim August 2000 Errata Sheet for Design EWD, EWS, and EWT Valves through 12 x 8 Inch Size Form 2376, February 1996 and Design EUD, EUT-2, EWD, and EWT-2 Valves through 24 x 20 Inch Size Form 5329, September 1993
W6825-1/IL
Figure 1. Cutaway Detail of the WhisperFlot Trim, Valve Body Typical
Fisher Controls WhisperFlot trim represents state of the art solutions for applications that demand ultimate attenuation. Control valves with WhisperFlo cages (figure 1) provide additional attenuation for aerodynamic noise in
very demanding vapor or gas applications with highpressure 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.