Self-acting pressure control valve
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Is it possible to have a self-acting pressure control valve with an inlet pressure of 3 bar and an outlet pressure of 5 mbar?
It is recommended to look for such valves online and check the scope of application indicated on their labels for reference.
The pressure difference is quite large; use a pressure reducing valve to bring the pressure down to a certain level first, and then connect a self-acting pressure regulating valve in series.
Since it’s not a process engineering field, I don’t think it’s possible. The pressure on the inlet side is lower than that on the outlet side – how can the fluid get through?
When the pressure reduction factor exceeds 30 times, a two-stage pressure reduction is generally required; if you achieve a pressure reduction of 600 times, two stages of pressure reduction are necessary. First install the pressure relief valve, then the control valve
Sure, we use FISHER here
Is this for the renovation of the tank area? Fisher’s nitrogen seal valve should work
Nitrogen-sealed valves with controllers are available with a control pressure of 0.4 kPa (with most having a pressure greater than 0.5 kPa). However, in your case, an additional level of control is needed beforehand to reduce the pressure before the valve to a certain level.
Now, with a pilot-operated self-acting pressure control valve, it’s possible to achieve 0.3 Kpa, which isn’t a big problem.