Emerson has introduced the Fisher WhisperTube Modal Attenuator for noisy fuel or vapour purposes, which offers noise reduction in compressible fluid service for improved worker security, with no impression on process circulate.
The modal attenuator is a full-bore device providing 15-decibel sound suppression to minimize back noise inside pipes produced by sources upstream, such as control valves or other gadgets. – Image: Emerson
The modal attenuator from Emerson is a full-bore gadget offering 15-decibel sound suppression to reduce noise inside pipes produced by sources upstream, such as control valves or different devices. It is put in downstream of these gadgets instead of a pipe spool piece, it generates no further strain drop, and has no impression on process circulate.
Until now, all solutions have generated significant strain drop, reduced circulate, and/or launched obstructions. This has led some customers to install acoustic insulation to pipe sections to scale back noise, but this might be pricey and cumbersome to put in, and it does nothing to reduce back inside piping noise. The modal attenuator addresses these and different points with a drop-in resolution, bettering worker safety and regulatory compliance, whereas reducing the risk of injury to downstream equipment due to excessive noise levels internal to piping.
Leading functions for the modal attenuator include these the place upstream course of flows are modified by control valves, stress aid valves, pumps, compressors and other devices that generate noise. Many of those units must be installed in lengths of piping with no move restrictions downstream, and the modal attenuator works well in these functions because it introduces no such restrictions.
In addition, the modal attenuator doesn’t introduce an obstruction into the piping, so it can be utilized in purposes where particulates are suspended in course of flows, and/or where pigging is required for cleaning and maintenance.
WhisperTube devices are supplied in sizes from 2–12 in, with American Society of Mechanical Engineer (ASME) flange ratings of Class one hundred fifty, 300 and 600. เกจวัดไนโตรเจนราคา match the flange rating sizes, and the utmost temperature is 700°F (371° C).
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