Emerson launches new valve trim technology

This next generation of Fisher Whisper trim technology addresses noise issues by using additive manufacturing and other techniques to create trim designs with increased capabilities.

This technology can be applied to rotary valves which are typically less expensive than globe valves, but are prone to higher noise levels due to their trim configuration. It is difficult to incorporate a large amount of noise reduction into the trim because of the limited available space and other factors, so rotary valves are not usually employed in high noise applications.

The new rotary style Fisher Whisper trim technology 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 valves.

Moreover, while a wide selection of low noise trims are available in globe valves, these use complicated trim configurations. Usually, the more complex the trim style, the higher the noise reduction and cost, and the lower the flow capacity. If high flow capacities are required, a much larger valve body has been necessary when using traditional low noise trim designs.

The globe style Fisher Whisper trim technology addresses this issue by creating trim designs with increased flow capacity. Globe valves using this technology have a 20% increased flow capacity as compared to traditional trim designs, while still offering up to 30 dBA noise reduction. This enables the use of smaller valves where larger sizes were previously required.

Read the article online at: https://www.tanksterminals.com/product-news/03112023/emerson-launches-new-valve-trim-technology/