I've built my own and I've bought from Alan.I have something similar -- believe it to be custom-built by "Alan Le"? However, unless it's broken but I don't recall observing the right gauge going from ~1000 psi to zero.
My experience has been that the bottle pressure will stay steady for most of the fill, until it starts to get near empty and it will slowly start to drop.
If it's not dropping as it starts getting low, might be a bad gauge? I dunno. Might be worth sending Alan a message. Can't recall if he's active here but he still seems to be on reefcentral.
Alan Le’s custom co2 regulators (DIY)
Hello Everyone! I wanted to share with you some of the custom co2 regulators I built recently. These are laboratory parts that I hunt from online and local surplus stores. They are very precise and work way better than commercial regulators.
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