Fisher™ Whisper™ NXV Trim

Fisher Vee-Ball Series valves (V150, V200, and V300) with the Whisper Trim combines the efficiency of a rotary valve with the acoustical attenuation capability of Whisper technology to provide improved performance in applications where aerodynamic noise is a concern. The Fisher Whisper Trim can be utilized in gas and vapor service to reduce noise effects that pose safety risks to personnel and cause pipeline vibration.

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Description

Features and Specifications

  • Whisper NXV Performance — Up to -20 dBA acoustical attenuation is achievable depending on service conditions.
  • Whisper NXV Fabrication — The additively manufactured attenuator features a rugged fabrication weld to provides structural integrity with the ball.
  • Excellent Flow Characteristic — Precise contouring of the V-notch ball provides an approximately equal percentage flow characteristic.
  • Improved Environmental Capabilities — The optional ENVIRO-SEAL packing system can control emissions to below the Environmental Protection Agency (EPA) limit of 100 parts per million (ppm) for valves.

Critical Service
Noise abatement

Flow Characteristics
Modified equal percentage

Valve Sizes
NPS 4, NPS 6, NPS 8

Valve Size Standard
NPS, DN

Pressure Class
ASME Class 150, ASME Class 300, ASME Class 600

Pressure Class
PN, ASME

Material
316L stainless steel

Process Media
Gas, vapor, or steam

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

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