credits: Josh Lewellen
anodic reaction, it happens. The only way to keep iron oxides, bacterial grown from clogging up sprinkler system is to move away from introducing oxygen into pneumatic systems within the industry. Nitrogen isn't the answer, regardless is not 100% effective.
The same thing with wet-pipe automatic sprinkler systems, air pockets cause internal metallic breakdowns causing sprinkler systems to fail across the industry. It seems that chlorinated is truly the answer, but it's only approved for light hazard in commercial buildings.
Chlorinated is listed for the use of some applicants in 13R for pneumatic usage. But 40PSI (Air) is no different than 200PSI (Water) it's a lot of stress on chlorinated piping systems.
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