Discover the Fisher™ Whisper Trim™ III Cage, engineered to reduce aerodynamic noise by up to 30 dBA in high-pressure drop gas and steam applications. Explore features, specs, and applications.
The Fisher™ Whisper Trim™ III Cage is a high-performance valve trim designed to tackle the challenge of aerodynamic noise in severe service applications. Engineered for use with gases, steam, and vapor services involving high-pressure drops, this cage utilizes advanced pressure-staging technology to effectively manage rapid fluid expansion and control noise at its source .
By incorporating specially designed passages, the Whisper Trim III cage disrupts the high-velocity flow that causes noise, protecting your equipment from potential damage caused by excessive vibration and sound pressure levels . This technology is essential in industries like power generation and hydrocarbon processing, where valve noise is not just an operational nuisance but a significant safety and environmental concern .
Superior Noise Control: Achieves noise reduction of up to 30 dBA compared to valves with standard trim, significantly contributing to a safer working environment and regulatory compliance .
Proven Reliability & Performance: Offers mature control and sustainability, providing excellent noise attenuation without compromising high flow capacity, ensuring optimal overall performance .
Easy Maintenance & Retrofit: The cage-style design allows for quick inspection and replacement without removing the valve body from the pipeline. It is often interchangeable with standard control valve trim, simplifying upgrades .
Extended Service Life: Constructed with hardened materials that provide excellent resistance to wear and erosion, ensuring longer operational life and reduced total cost of ownership .
Effective in Severe Services: Specifically designed to handle demanding applications, including those with high-pressure drops and rapid fluid expansion, preventing system vibration and valve damage .
Hydrocarbon Processing: Compressor anti-surge, overhead stripper gas, export combustion, and gas pipeline transmission .
Power Generation: High-pressure steam letdown, turbine bypass systems, and soot blower controls .
LNG & Chemical Plants: Acid gas removal units and other severe services involving gassing and two-phase flow .
| Attribute | Specification |
|---|---|
| Brand | Fisher™ |
| Trim Model | Whisper Trim™ III Cage |
| Primary Function | Aerodynamic Noise Reduction |
| Noise Reduction | Up to 30 dBA |
| Service Media | Gas, Steam, Vapor |
| Design Technology | Multi-stage, Discrete Pressure Staging |
| Valve Compatibility | Designed for Fisher severe service valves (e.g., EW, EWT series) |
| Key Feature | Easy maintenance, Interchangeable with standard trim |
| Material | Hardened Materials (Standard) |
For further technical details, specific compatibility information, or to discuss your application requirements, please do not hesitate to contact the sales team at Kateteco. We are here to provide you with the ideal solution for your demanding flow control needs.









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KateTeco (Tianjin) Technology Co., Ltd. serves as an outstanding partner in the field of industrial fluid automation, specializing in the introduction and integration of high-end valves and instruments. We are committed to providing customers with safe, reliable, and intelligent system solutions. By leveraging global leading product resources and supported by systematic professional training and on-site technical assistance from Emerson’s experienced engineers, we ensure that customers can respond promptly and accurately to technical challenges.
With full lifecycle services covering installation, commissioning, operation, maintenance, and replacement, we deliver a true one-stop service system. This allows our customers to enjoy seamless, efficient, and high-quality assurance, supporting enterprises in achieving stable operation and continuous upgrades.


✅ Is it 100% genuine? —— We guarantee: All products are official and come with an 18-month warranty.
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