Emerson introduces silencer to protect employees

Emerson has introduced the Fisher WhisperTube Modal Attenuator for noisy gas or vapour applications, which provides noise reduction in compressible fluid service for improved employee security, with no influence on course of flow.
เกจอาร์กอน is a full-bore gadget providing 15-decibel sound suppression to scale back noise inside pipes produced by sources upstream, such as management valves or different gadgets. – Image: Emerson
The modal attenuator from Emerson is a full-bore system offering 15-decibel sound suppression to reduce noise inside pipes produced by sources upstream, such as management valves or different gadgets. It is installed downstream of these units rather than a pipe spool piece, it generates no additional pressure drop, and has no impact on course of move.
Until now, all options have generated important stress drop, decreased move, and/or introduced obstructions. This has led some users to put in acoustic insulation to pipe sections to minimize back noise, however this can be pricey and cumbersome to install, and it does nothing to cut back inside piping noise. The modal attenuator addresses these and other points with a drop-in answer, bettering worker security and regulatory compliance, whereas reducing the risk of injury to downstream equipment due to excessive noise levels internal to piping.
Leading applications for the modal attenuator embrace those where upstream course of flows are changed by management valves, pressure aid valves, pumps, compressors and different devices that generate noise. Many of those gadgets must be installed in lengths of piping with no move restrictions downstream, and the modal attenuator works properly in these applications as a outcome of it introduces no such restrictions.
In addition, the modal attenuator does not introduce an obstruction into the piping, so it might be used in functions the place particulates are suspended in course of flows, and/or the place pigging is required for cleansing and maintenance.
WhisperTube gadgets are supplied in sizes from 2–12 in, with American Society of Mechanical Engineer (ASME) flange ratings of Class 150, 300 and 600. Pressure scores match the flange score sizes, and the utmost temperature is 700°F (371° C).

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