Calcium reactor regulator part question.

[Smite]

Hey all.
I had this SS regulator built by someone on another forum awhile back. Well my kid got in there and twisted some knobs while I was out swapping co2 tanks. I’m having trouble getting co2 to enter my reactor now even at a PSI of 20. Well I came across this knob that I don’t recall what it does.

I opened it up and co2 started flying threw the bubble counter. It was fully seated and I’m not sure where it should be? I have it hardly cracked open but don’t want to dump a full tank as I’m not sure what it’s purpose is?
Thanks for any help on ID and function.


Matt


I thought that picture was more zoomed in. I’m referring to the all SS metal knob on the bottom of the regulator body in the picture

 

[lapin]

I dont have one of these but it sounds like to me the solid steel knob is the needle valve
Similar to this one
https://www.airgas.com/product/Gas-...ment/Specialty-Gas-Regulators/p/Y12244D580-AG

 

[Smite]

I dont have one of these but it sounds like to me the solid steel knob is the needle valve
Similar to this one
https://www.airgas.com/product/Gas-...ment/Specialty-Gas-Regulators/p/Y12244D580-AG

Seems to function like that too. I’ve always had to run around 10-15 psi to my reactor to get bubbles in the counter. I thought maybe that’s just what it took to push the co2 check valve open, but maybe it was actually this first needle valve being close too much? I know a few people only pushing 3-5 psi with steady bubble rates. I’ll have to play with it and see. I was just worried it was a relief valve and I was gonna dump the tank.

Thanks,
Matt