What is the pressure regulation range of a self-acting control valve?
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The raw material tank area needs to be equipped with a nitrogen seal; the nitrogen pressure is regulated by a self-acting control valve. The pressure of the nitrogen coming from the pipeline network is 0.7 MPa (G), and it drops to 2 KPa (G) after passing through the self-acting control valve. I would like to know whether this is feasible I’d like to ask everyone how they handled similar situations in the past? Thank you! ! ! :P
I’ve never used this before; based on our on-site experience, we always first reduce the pressure to 0.17 bar of low-pressure nitrogen, and then further lower it to several dozen KPa
I would like to ask what kind of valve you use to reduce the pressure from 0.7 to 0.17, and then use a self-acting control valve to lower it to several dozen KPA?
Our company first uses a self-regulating valve to reduce the pressure by 3 kilograms, and then another self-regulating valve to bring it down to 20 kPa
For this case, multiple stages of pressure reduction would be better; a too large reduction in pressure leads to inaccuracies and is also more difficult to achieve