Is there any alternative to using a low-pressure pressure regulator in the laboratory, given that the required pressure is very low? I would appreciate it if experts could offer some advice
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I’m currently preparing for some experiments, and I need to reduce the pressure of the nitrogen from the cylinder to atmospheric pressure, or to a gauge pressure of 0.005 MPa. I plan to first use a standard nitrogen pressure regulator to lower the pressure to 0.2–0.3 MPa, and then apply another stage of pressure reduction to achieve the desired level. However, after searching many websites, I couldn’t find what I needed. I’d like to ask if any of you have any recommendations for pressure regulators or alternative solutions. Used for 6mm outer diameter hose pipelines in the laboratory. I hope fellow sailors will not hesitate to share their insights
0.005 Mpa – that’s roughly the pressure of a gentle breath
It’s still heavier than that; it weighs around 50 grams, about one or two liang.
Micro pressure regulating valve is available; a nitrogen seal valve will do as well. QQ2598856209
This one will work; we can communicate via WeChat: 18721872815
For experiments like yours, liquid nitrogen can be used in place of nitrogen. The general process involves using an open container filled with liquid nitrogen to maintain atmospheric pressure, and then introducing appropriate nitrogen into the equipment. I’m not sure if there are any requirements regarding the purity of the nitrogen or any other specific rules; it’s difficult to specify the exact procedure