Featured Product
This Week in Quality Digest Live
Operations Features
Jeremy L. Boerger
To keep your business running, you need visibility into your IT assets
Naresh Pandit
Enter the custom recovery plan
Anton Ovchinnikov
In competitive environments, operational innovation could well be the answer to inventory risk
Kari Miller
An effective strategy requires recruiting qualified personnel familiar with the process and technology
Julie Winkle Giulioni
The old playbook probably won't work

More Features

Operations News
The Ring Dex 2 filling and capping system is designed to simplify production.
Recent research finds organizations unprepared to manage more complex workforce
Designed for high-volume production environments
Combined company gives manufacturers greater control over output, quality, and sustainability
Enables system-level modeling with 2D and 3D visualization, reducing engineering effort, risk, and cost
For high-volume, parts-cleaning applications
Product placement lends depth to sustainability
Innovative in-line, continuous color-management systems

More News

Quality Digest

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

(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.

Emerson WhisperTube

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.

Discuss

About The Author

Quality Digest’s picture

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.