Emerson has introduced the Fisher WhisperTube Modal Attenuator for noisy gas or vapour applications, which presents noise discount in compressible fluid service for improved worker safety, with no impression on course of move.
spmk700 is a full-bore device providing 15-decibel sound suppression to reduce back noise inside pipes produced by sources upstream, similar to management valves or other gadgets. – Image: Emerson
The modal attenuator from Emerson is a full-bore gadget offering 15-decibel sound suppression to minimize back noise inside pipes produced by sources upstream, similar to control valves or other devices. It is installed downstream of these devices instead of a pipe spool piece, it generates no extra pressure drop, and has no impact on process flow.
Until now, all solutions have generated vital pressure drop, lowered flow, and/or introduced obstructions. This has led some users to put in acoustic insulation to pipe sections to reduce back noise, but this might be pricey and cumbersome to install, and it does nothing to reduce back inner piping noise. The modal attenuator addresses these and different points with a drop-in resolution, improving employee safety and regulatory compliance, while lowering the chance of damage to downstream gear because of excessive noise ranges inner to piping.
Leading compound gauge ราคา for the modal attenuator embody these where upstream course of flows are modified by control valves, stress reduction valves, pumps, compressors and other gadgets that generate noise. Many of those units have to be put in in lengths of piping with no move restrictions downstream, and the modal attenuator works properly in these applications 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 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 provided in sizes from 2–12 in, with American Society of Mechanical Engineer (ASME) flange scores of Class 150, 300 and 600. Pressure scores match the flange score sizes, and the utmost temperature is 700°F (371° C).
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