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Xiaobai seeks advice from the experts

2016-04-20View Original

Thread Content

When selecting control valves, do people take into account valve noise and flow obstruction? Is the impact of noise on valves severe? When choosing between pipe balance flowmeters and electromagnetic flowmeters for ordinary media, how should one make the decision?
Reply #22016-04-22
Noise is often given less consideration, but in extreme cases, the vibrations caused by noise can lead to serious accidents, and the pipes might even break. Does a pipeline-balanced flow meter refer to a balanced orifice flow meter? For flowmeters that use measurement principles completely different from electromagnetism, if all of them can be used, it’s better to choose the cheaper one.
Reply #32016-04-23
This post was last edited by HEJIYUER on 2016-4-23 at 23:28. Do people take into account valve noise when selecting control valves? Liquids do not need to be calculated, nor does liquid flashing need to be calculated. For gases, it depends on the situation; if the pressure is reduced by half, calculations must be done. Will blocking the flow be considered? Is the impact of noise on valves severe? Cavitation is a state of \"non-fully obstructed flow.\" Cavitation and noise are like twins; in other words, the severity of cavitation can be indicated by the level of noise. You can refer to the IEC standards for calculating noise levels in control valves – these standards provide detailed descriptions of the analysis and parameters related to liquid cavitation, and that’s exactly how it works. When selecting control valves, cavitation should be avoided as much as possible (for example, through a multi-stage pressure reduction design); at the very least, \"severe cavitation\" should be prevented, as it causes significant damage to the valve. @jiaguoyun @Big Horse with Big Bow

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