Fisher™ Inline Diffusers
A complete line of Fisher inline diffusers provide optimum noise attenuation where valves can contribute substantial noise. When installed, the total pressure drop of the system is divided across the valve and diffuser. This enables the valve to operate at a lower pressure drop ratio, thereby lowering the noise level generated from the process flowing through the control valve. Options include: the 6010 with integral outlet head, the 6011 pipe style, and the Whisper Disk.
The Fisher™ Inline Diffusers, engineered by Emerson, are precision-engineered devices designed to reduce noise and pressure drop in gas, steam, and liquid flow systems. Installed downstream of control valves or regulators, these diffusers work by evenly distributing flow energy and minimizing turbulence, resulting in quieter operation, reduced vibration, and enhanced system stability. Fisher Inline Diffusers are a vital component for applications requiring acoustic attenuation and flow energy management, particularly in high-pressure and high-velocity systems. They complement the performance of Fisher™ control valves by effectively dissipating excess energy and ensuring smoother, more stable downstream flow conditions. Constructed from robust stainless steel or alloy materials, Fisher Inline Diffusers offer exceptional corrosion resistance, long service life, and easy integration into both new and existing piping systems. These diffusers are widely used in power generation, oil and gas, chemical, and process industries to ensure safe, quiet, and efficient plant operations.
Technical Specification of Fisher™ Inline Diffusers
- Critical Service
- Noise Abatement
- Material
- Carbon Steel, Stainless, Alloy
- Operating Temperature
- Standard Temperature, High Temperature
- Process Connection Type
-
- 6010: Flanged, Butt Weld, Socket Weld
- 6011: Wafer, Flanged
- Whisper Disk: Raised Face, RTJ, Flanged
- Valve Size
-
- 6010: NPS 1 to NPS 26, Up to NPS 72
- 6011: NPS 2 to NPS 48
- Whisper Disk: NPS 2 to NPS 36
- Valve Size Standard
- NPS
- Other Configurations
- Contact your local Emerson business partner or sales office to learn about additional specifications or options for this product.
Feature of Fisher™ Inline Diffusers
- The diffuser concept is used in several unique versions, providing solutions for various applications. The diffuser need not be installed adjacent to the control valve.
- A properly selected diffuser-valve combination can result in up to 40 dBA noise reduction.
- A diffuser-valve combination retains the pressure/flow control associated with a standard control valve. Just as important, it controls the generation of potentially damaging noise and vibration.
- All Fisher diffusers, both inline and vent, are ruggedly-built, static devices requiring no maintenance after installation. These features combine to offer increased noise control at a reduced investment.