Originally Posted by Cliff897
It's made to flood a green house with CO2 gas. Pressure at the out put end is not a relevant consideration. Plants transpire at a rate that the grower can calculate and get a Cubic foot per time period.
Or stated another way: you got the wrong tool.
A high quality bier regulator from any supplier would be my first choice with duel gauges for under $60 off the top of my head in price. Those that are nickel plated sure look sharp plus they have rebuild kits for the regulators.
That flow meter you have can be saved and used for your wort O2 flow control at the fermenter, not a total loss. If you add a couple gauges without going over the cost of a complete regulator system you'll be good but are rebuilds available for this regulator?
For a O2 flow meter I have a medical one like you see in hospitals measuring from 0-20 LPM @ 30 PSI. Offered new free I had to grab it.