Is it necessary to install a double valve at the end of the nitrogen pipeline?
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1. Is it necessary to install double valves at the on-site nitrogen pipeline service points? Cite that specification requirement. Thank you. 2. What color should be applied to the purification air storage tank? Cite that specification requirement. Thank you.
Installing dual valves mainly facilitates maintenance. The front valve is usually in the open position, while the rear valve is prone to damage; close the front valve before servicing the rear valve. There is also the issue of preventing leaks. Another aspect is preventing leaks; a bypass line needs to be added between the front and rear valves, along with an exhaust valve. After both valves are closed, fully open the branch line to prevent gas leakage from within the valves. “\"Purifying wind\" is a counterfeit dialect. It should be called **gas source, what kind of gas is used as the source. You might not be able to find things of this kind of fake language. Various gases have designated colors; there is plenty of information available online. It’s not as good as nitrogen cylinders; at the equatorial position, a 200mm yellow equatorial band must be painted as an indicator for nitrogen, while oxygen is indicated by blue. For reference.
Installing dual valves mainly facilitates maintenance. The front valve is usually in the open position, while the rear valve is prone to damage; close the front valve before servicing the rear valve. There is also the issue of preventing leaks. Another aspect is preventing leaks; a bypass line needs to be added between the front and rear valves, along with an exhaust valve. After both valves are closed, fully open the branch line to prevent gas leakage from within the valves. ——————This point is very important
Clause 9.4.1 of SH3012 specifies clearly that nitrogen in the hose station must be supplied using a dual-valve system