Seeking help regarding the pressure gauge behind a self-acting control valve
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Can the pressure gauge built into the self-acting control valve downstream of the nitrogen sealing pipeline for the storage tank be used as a device for measuring the tank’s pressure? Why?
Theoretically, the pressures of the two are the same, but this is not standard practice. In special situations such as when a pipeline is blocked or the valve leading to the tank is closed, the pressures will differ. The pressure in the storage tank is what matters, and the pressure measurement should be taken from the tank itself. Installing multiple pressure gauges allows for comparison and reference, which is necessary for ensuring instrument safety. :P
No, the pressure gauge on the tank is a gauge that requires mandatory inspection, and it must be installed separately; a gauge used for adjustment cannot be used in place of the tank’s pressure gauge.
The answer is on the 3rd floor. Also, the pressure after PCV is slightly higher than that on the tank, mainly due to the pressure drop in the pipelines. The nitrogen seal pressure is generally less than 2 KPA, and there are variations.
Which storage tank doesn’t come equipped with a pressure gauge? Being stingy or generous now