Fisher Whisper trim technology leverages additive manufacturing to implement optimized process designs, providing 20% more valve capacity with 10 fewer decibels of noise

A global technology and software company has announced its innovative new Fisher™ Whisper™ Trim Technology for use in both rotary and globe valves. This next generation of Fisher Whisper Trim technology addresses noise issues by using additive manufacturing and other advanced techniques to create trim designs with increased capabilities.

Risk of high noise pressure levels

Control valve noise is often problematic in industrial applications. It is created by high pressure drops across a valve, which generate high velocities as the fluid moves through the narrowed passages in the valve body.

This aerodynamic noise has a strong dependence on the gas velocity, so high flow and high pressure drop applications tend to reach high sound levels very quickly. This type of noise can damage hearing, and over time it can destroy tubing, sensitive equipment, nearby piping connections, and valve components.

New technology helps to reduce costs

The new rotary style Fisher Whisper Trim Technology by Emerson addresses this issue, with additive manufacturing used to provide up to 20 A-weighted decibels (dBA) of sound level reduction, a 10 dBA improvement compared to traditionally manufactured solutions.

These noise reduction levels are achieved while largely maintaining the high flow capacities common with rotary valves, and this solution saves significant costs as compared to globe valve alternatives.