Gaseous Noise Trim minimizes sound pressure levels.February 15, 2008 -
Capable of cutting noise up to 40 dB in severe service applications, Flowserve ValtekŪ Stealth gradually reduces pressure without generating high velocities, and utilizes frequency shifting technology to further reduce audible noise. Stealth laser-cut discs are stacked to form seat retainer, while cuts in discs form channels for fluid to pass through. Flow expands and contracts as it passes through seat retainer creating gradual, controlled pressure drops.
(Archive News Story - Products mentioned in this Archive News Story may or may not be available from the manufacturer.)
Original Press release
Flowserve Corp.
222 W. Las Colinas Blvd.
Irving, TX, 75039
USA
Flowserve Introduces Breakthrough in Gaseous Noise Attenuation
Stealth Trim Combines Multiple Noise Control Mechanisms
DALLAS, February 5, 2008 - Flowserve Corporation, a leading global provider of fluid motion and control products and services (NYSE: FLS), announces the release of Flowserve ValtekŪ Stealth, a patented gaseous noise trim that reduces sound pressure levels in the most demanding applications.
"Three years of field service have proven the technologies behind Stealth's advanced design," said Bradford Haines, product manager at Flowserve. "We've developed a highly effective device capable of reducing noise up to 40 decibels in severe service where noise and excessive vibration can damage both human hearing and equipment."
Stealth laser-cut discs are stacked to form the seat retainer. The cuts in the discs form channels for the fluid to pass through. Building on technologies from the field-proven Flowserve Valtek TigerTooth trim, flow through the Stealth expands and contracts as it passes through the seat retainer creating gradual, controlled pressure drops.
Stealth's patented design gradually reduces pressure without generating high velocities, which is critical in noise reduction. In addition to reducing the pressure gradually, Stealth utilizes a frequency shifting technology to further reduce audible noise. Flowserve's new WaveCracker technology utilizes irregularly shaped cross-sections and improves noise reduction significantly over current designs.
The Stealth trim noise attenuator combines pressure reduction, velocity control, and noise elimination features to significantly reduce the noise caused by high pressure drops. Covered by three unique patents, Stealth is the most effective noise reduction trim for control valves.
About Flowserve Corp.
Flowserve Corp. is one of the world's leading providers of fluid motion and control products and services. Operating in more than 55 countries, the company produces engineered and industrial pumps, seals and valves as well as a range of related flow management services. More information about Flowserve can be obtained by visiting the company's Web site at www.flowserve.com.
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