Emerson introduces silencer to protect workers

Emerson has launched the Fisher WhisperTube Modal Attenuator for noisy fuel or vapour purposes, which provides noise reduction in compressible fluid service for improved employee safety, with no impact on course of circulate.
The modal attenuator is a full-bore system providing 15-decibel sound suppression to cut back noise inside pipes produced by sources upstream, similar to control valves or other devices. – Image: Emerson
The modal attenuator from Emerson is a full-bore gadget offering 15-decibel sound suppression to reduce back noise inside pipes produced by sources upstream, corresponding to control valves or different gadgets. It is installed downstream of these devices instead of a pipe spool piece, it generates no extra stress drop, and has no impression on course of flow.
Until now, all options have generated vital pressure drop, lowered circulate, and/or introduced obstructions. This has led some users to install acoustic insulation to pipe sections to scale back noise, but this can be expensive and cumbersome to install, and it does nothing to scale back inside piping noise. The modal attenuator addresses these and different points with a drop-in answer, improving worker safety and regulatory compliance, while reducing the risk of harm to downstream tools as a result of excessive noise ranges inner to piping.
Leading functions for the modal attenuator include those where upstream course of flows are changed by control valves, strain relief valves, pumps, compressors and different devices that generate noise. Many of those units should be installed in lengths of piping with no circulate restrictions downstream, and the modal attenuator works well in these purposes as a end result of it introduces no such restrictions.
In addition, the modal attenuator does not introduce an obstruction into the piping, so it may be utilized in functions where particulates are suspended in course of flows, and/or the place pigging is required for cleaning and upkeep.
WhisperTube devices are offered in sizes from 2–12 in, with American Society of Mechanical Engineer (ASME) flange ratings of Class a hundred and fifty, 300 and 600. เกจ์วัดแรงดันลม match the flange score sizes, and the utmost temperature is 700°F (371° C).

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