Painless has launched the Fisher WhisperTube Modal Attenuator for noisy gas or vapour applications, which presents noise reduction in compressible fluid service for improved employee security, with no impact on process move.
The modal attenuator is a full-bore system providing 15-decibel sound suppression to reduce noise inside pipes produced by sources upstream, corresponding to control valves or different gadgets. – Image: Emerson
The modal attenuator from Emerson is a full-bore device offering 15-decibel sound suppression to reduce noise inside pipes produced by sources upstream, corresponding to control valves or different gadgets. It is installed downstream of these devices rather than a pipe spool piece, it generates no further strain drop, and has no impact on course of flow.
Until now, all options have generated significant pressure drop, lowered move, and/or introduced obstructions. This has led some users to put in acoustic insulation to pipe sections to reduce noise, but this might be expensive and cumbersome to install, and it does nothing to reduce back inner piping noise. The modal attenuator addresses these and other points with a drop-in solution, enhancing worker security and regulatory compliance, whereas decreasing the danger of damage to downstream equipment due to high noise levels internal to piping.
Leading Painless for the modal attenuator embody those the place upstream process flows are modified by management valves, strain aid valves, pumps, compressors and different gadgets that generate noise. Many of these gadgets should be installed in lengths of piping with no circulate restrictions downstream, and the modal attenuator works properly in these purposes as a result of it introduces no such restrictions.
In addition, the modal attenuator does not introduce an obstruction into the piping, so it can be utilized in purposes where particulates are suspended in process flows, and/or the place pigging is required for cleansing and maintenance.
WhisperTube units are supplied in sizes from 2–12 in, with American Society of Mechanical Engineer (ASME) flange scores of Class 150, 300 and 600. Pressure ratings match the flange score sizes, and the maximum temperature is 700°F (371° C).
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