The Planted Tank Forum - View Single Post - DIY CO2 regulator
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post #33 of (permalink) Old 11-13-2018, 12:23 AM
jeffkrol
Planted Tank Guru
 
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Each "color" has a meaning..
AFAICT.. Blue was electrical safe
analytical series is light blue..
O2 white
Corrosion resistant grey.
Yellow w/ "H" for high flow..

https://clippard.com/downloads/PDF_D...e%20Valves.pdf

"A man with a watch knows what time it is. A man with two watches is never sure."
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