Quality Digest Bio Operations Emerson Introduces Silencer to Help Protect Workers from Gas Process Noise Improves worker safety by reducing noise in compressible fluid service with no impact to process flow Published: Monday, February 14, 2022 - 12:59 Comment Rss Send Article (Must Login) Print Author Archive (Emerson: Marshalltown, Iowa) -- Emerson has introduced the Fisher WhisperTube Modal Attenuator for noisy gas or vapor applications in a wide range of industries. The modal attenuator is a full-bore device offering 15-decibel sound suppression to reduce pipe noise produced by sources upstream, such as control valves or other devices. It’s installed downstream of these types of devices in place of a pipe spool piece, generates no additional pressure drop, and has no effect on process flow. Industrial users have long searched for a solution to reduce process piping noise, but until now all solutions have generated significant pressure drop, reduced flow, or introduced obstructions. This has led some users to install acoustic insulation to pipe sections to reduce noise, but this can be costly and cumbersome to install, and it does nothing to reduce internal piping noise. The modal attenuator addresses these and other issues with a drop-in solution, improving worker safety and regulatory compliance, while reducing the risk of damage to downstream equipment due to high noise levels internal to piping. Leading applications for the modal attenuator include those where upstream process flows are changed by control valves, pressure relief valves, pumps, compressors, and other devices that generate noise. Many of these devices must be installed in lengths of piping with no flow restrictions downstream, and the modal attenuator works particularly well in these applications because it introduces no such restrictions. Unlike other noise suppression solutions, the modal attenuator doesn’t introduce an obstruction into the piping, so it can be used in applications where particulates are suspended in process flows, or where pigging is required for cleaning and maintenance. WhisperTube devices are offered in sizes from 2 in. to 12 in., with American Society of Mechanical Engineer (ASME) flange ratings of Class 150, 300, and 600. Pressure ratings match the flange rating sizes, and the maximum temperature is 700€€°F. To learn more, visit Emerson.com/FisherWhisperTube. About Emerson Emerson, headquartered in St. Louis, Missouri, is a global technology and engineering company providing innovative solutions for customers in industrial, commercial, and residential markets. The company’s Automation Solutions business helps process, hybrid, and discrete manufacturers maximize production, protect personnel and the environment while optimizing their energy and operating costs. Its Commercial and Residential Solutions business helps ensure human comfort and health, protect food quality and safety, advance energy efficiency, and create sustainable infrastructure. For more information visit Emerson.com. Quality Digest does not charge readers for its content. We believe that industry news is important for you to do your job, and Quality Digest supports businesses of all types. However, someone has to pay for this content. And that’s where advertising comes in. Most people consider ads a nuisance, but they do serve a useful function besides allowing media companies to stay afloat. They keep you aware of new products and services relevant to your industry. All ads in Quality Digest apply directly to products and services that most of our readers need. You won’t see automobile or health supplement ads. Our PROMISE: Quality Digest only displays static ads that never overlay or cover up content. They never get in your way. They are there for you to read, or not. So please consider turning off your ad blocker for our site. Thanks, Quality Digest Discuss ( 0 ) Hide Comments Comment About The Author Quality Digest For 40 years Quality Digest has been the go-to source for all things quality. Our newsletter, Quality Digest, shares expert commentary and relevant industry resources to assist our readers in their quest for continuous improvement. Our website includes every column and article from the newsletter since May 2009 as well as back issues of Quality Digest magazine to August 1995. We are committed to promoting a view wherein quality is not a niche, but an integral part of every phase of manufacturing and services.

(Emerson: Marshalltown, Iowa) -- Emerson has introduced the Fisher WhisperTube Modal Attenuator for noisy gas or vapor applications in a wide range of industries. The modal attenuator is a full-bore device offering 15-decibel sound suppression to reduce pipe noise produced by sources upstream, such as control valves or other devices. It’s installed downstream of these types of devices in place of a pipe spool piece, generates no additional pressure drop, and has no effect on process flow.

Industrial users have long searched for a solution to reduce process piping noise, but until now all solutions have generated significant pressure drop, reduced flow, or introduced obstructions. This has led some users to install acoustic insulation to pipe sections to reduce noise, but this can be costly and cumbersome to install, and it does nothing to reduce internal piping noise. The modal attenuator addresses these and other issues with a drop-in solution, improving worker safety and regulatory compliance, while reducing the risk of damage to downstream equipment due to high noise levels internal to piping.

Leading applications for the modal attenuator include those where upstream process flows are changed by control valves, pressure relief valves, pumps, compressors, and other devices that generate noise. Many of these devices must be installed in lengths of piping with no flow restrictions downstream, and the modal attenuator works particularly well in these applications because it introduces no such restrictions.

Unlike other noise suppression solutions, the modal attenuator doesn’t introduce an obstruction into the piping, so it can be used in applications where particulates are suspended in process flows, or where pigging is required for cleaning and maintenance.

WhisperTube devices are offered in sizes from 2 in. to 12 in., with American Society of Mechanical Engineer (ASME) flange ratings of Class 150, 300, and 600. Pressure ratings match the flange rating sizes, and the maximum temperature is 700€€°F.

To learn more, visit Emerson.com/FisherWhisperTube.

Emerson, headquartered in St. Louis, Missouri, is a global technology and engineering company providing innovative solutions for customers in industrial, commercial, and residential markets. The company’s Automation Solutions business helps process, hybrid, and discrete manufacturers maximize production, protect personnel and the environment while optimizing their energy and operating costs. Its Commercial and Residential Solutions business helps ensure human comfort and health, protect food quality and safety, advance energy efficiency, and create sustainable infrastructure. For more information visit Emerson.com.

Quality Digest does not charge readers for its content. We believe that industry news is important for you to do your job, and Quality Digest supports businesses of all types.

However, someone has to pay for this content. And that’s where advertising comes in. Most people consider ads a nuisance, but they do serve a useful function besides allowing media companies to stay afloat. They keep you aware of new products and services relevant to your industry. All ads in Quality Digest apply directly to products and services that most of our readers need. You won’t see automobile or health supplement ads. Our PROMISE: Quality Digest only displays static ads that never overlay or cover up content. They never get in your way. They are there for you to read, or not.

So please consider turning off your ad blocker for our site.

For 40 years Quality Digest has been the go-to source for all things quality. Our newsletter, Quality Digest, shares expert commentary and relevant industry resources to assist our readers in their quest for continuous improvement. Our website includes every column and article from the newsletter since May 2009 as well as back issues of Quality Digest magazine to August 1995. We are committed to promoting a view wherein quality is not a niche, but an integral part of every phase of manufacturing and services.

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