Does the outlet pressure of a pressure relief valve change along with the inlet pressure?
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The company has several pneumatic level gauges, which use glass rotameters to regulate the flow rate of the air supply; however, fluctuations in the air pressure cause inaccuracies in the readings of these level gauges. I would like to replace the glass rotameter with a pressure regulator in order to keep the outlet pressure at a constant level. I wonder if it’s possible? I would like to ask whether the outlet pressure of a pressure regulating valve can remain constant without being affected by the inlet pressure? (The air source comes from the air compressor, and the inlet pressure is definitely higher than the outlet pressure.) . . I hope all experts can offer their guidance.
This post was last edited by tree150 on 2011-6-30 at 20:45. Pressure regulators using GO provide a relatively stable output pressure. Didn’t your glass rotameter come equipped with a pressure regulating valve before? I think installing a pressure regulator in front of the glass rotameter should help maintain a stable flow rate in the meter.
When the outlet pressure setting is higher than the inlet pressure, the pressure will change; otherwise, it will not