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Emerson has launched the Fisher WhisperTube Modal Attenuator for noisy gas or vapour applications, which provides noise discount in compressible fluid service for improved employee security, with no impact on course of move.
The modal attenuator is a full-bore device providing 15-decibel sound suppression to cut back noise inside pipes produced by sources upstream, similar to management valves or other devices. – Image: Emerson
The modal attenuator from Emerson is a full-bore system providing 15-decibel sound suppression to reduce noise inside pipes produced by sources upstream, corresponding to management valves or different units. It is put in downstream of those devices in place of a pipe spool piece, it generates no additional pressure drop, and has no impact on course of flow.
Until now, all options have generated significant stress drop, reduced flow, and/or launched obstructions. This has led some customers to put in acoustic insulation to pipe sections to reduce noise, however this can be pricey and cumbersome to put in, and it does nothing to scale back inner piping noise. The modal attenuator addresses these and other points with a drop-in answer, improving employee security and regulatory compliance, whereas lowering the risk of harm to downstream tools as a outcome of high noise levels inner to piping.
Leading applications for the modal attenuator include those the place upstream process flows are changed by control valves, stress aid valves, pumps, compressors and different gadgets that generate noise. Many of those gadgets must be installed in lengths of piping with no move restrictions downstream, and the modal attenuator works well in these purposes as a outcome of it introduces no such restrictions.
In addition, the modal attenuator does not introduce an obstruction into the piping, so it could be utilized in functions where particulates are suspended in course of flows, and/or where pigging is required for cleansing and maintenance.
WhisperTube devices are provided in sizes from 2–12 in, with American Society of Mechanical Engineer (ASME) flange ratings of Class a hundred and fifty, 300 and 600. spmk700 match the flange ranking sizes, and the utmost temperature is 700°F (371° C).
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