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Emerson introduces silencer to guard workers

Emerson has introduced the Fisher WhisperTube Modal Attenuator for noisy gasoline or vapour purposes, which presents noise reduction 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 reduce noise inside pipes produced by sources upstream, corresponding to control valves or other devices. – 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, corresponding to control valves or other units. It is put in downstream of those devices in place of a pipe spool piece, it generates no extra strain drop, and has no impression on process flow.
Until now, all options have generated vital stress drop, decreased circulate, and/or launched obstructions. ไดอะแฟรม ซีล has led some users to put in acoustic insulation to pipe sections to scale back noise, but this could be costly and cumbersome to put in, and it does nothing to reduce inside piping noise. The modal attenuator addresses these and other points with a drop-in answer, enhancing worker security and regulatory compliance, while lowering the risk of damage to downstream gear as a end result of high noise levels internal to piping.
Leading functions for the modal attenuator embody those where upstream process flows are modified by management valves, stress aid valves, pumps, compressors and different gadgets that generate noise. Many of these gadgets must be installed in lengths of piping with no move restrictions downstream, and the modal attenuator works nicely 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 might be used in applications the place particulates are suspended in course of flows, and/or the place pigging is required for cleaning and upkeep.
WhisperTube gadgets are supplied in sizes from 2–12 in, with American Society of Mechanical Engineer (ASME) flange rankings of Class one hundred fifty, 300 and 600. Pressure scores match the flange score sizes, and the utmost temperature is 700°F (371° C).
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