Emerson introduces silencer to guard employees

Emerson has launched the Fisher WhisperTube Modal Attenuator for noisy fuel or vapour functions, which provides noise discount in compressible fluid service for improved employee safety, with no influence on course of move.
The modal attenuator is a full-bore device providing 15-decibel sound suppression to reduce back noise inside pipes produced by sources upstream, such as management valves or different devices. – Image: Emerson
The modal attenuator from Emerson is a full-bore device offering 15-decibel sound suppression to scale back noise inside pipes produced by sources upstream, such as control valves or other units. It is installed downstream of these devices instead of a pipe spool piece, it generates no additional stress drop, and has no influence on course of flow.
Until now, all options have generated important pressure drop, reduced circulate, and/or introduced obstructions. This has led some users to put in acoustic insulation to pipe sections to reduce noise, but this might be costly and cumbersome to install, and it does nothing to reduce back internal piping noise. The modal attenuator addresses these and different issues with a drop-in answer, improving worker security and regulatory compliance, while reducing the chance of injury to downstream equipment due to excessive noise ranges inner to piping.
Leading functions for the modal attenuator embrace those where upstream process flows are changed by management valves, stress aid valves, pumps, compressors and other units that generate noise. Many of these units must be installed in lengths of piping with no circulate restrictions downstream, and the modal attenuator works properly in these functions as a outcome of it introduces no such restrictions.
In addition, the modal attenuator does not introduce an obstruction into the piping, so it can be used in purposes where particulates are suspended in course of flows, and/or where pigging is required for cleansing and maintenance.
pressure gauge ด้าน ดูด are provided in sizes from 2–12 in, with American Society of Mechanical Engineer (ASME) flange scores of Class a hundred and fifty, 300 and 600. Pressure ratings match the flange rating sizes, and the maximum temperature is 700°F (371° C).
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