Robert65
Major Obvious (recently promoted)
I bought something from that Lion Brewing on Ebay. Once. Nuff said?
I got mine from More Beer. It was $10 more than Lion's. Here's a pic for reference. SHould the arrow point away from the tee assembly?
View attachment 667871
I connected mine to a spare gas line via a disconnect jumper. With the valve set at 10 and my co2 regulator set at 10, I could hear a faint hiss. Turning up the valve a couple of psi seemed to stop the leak and it would hold pressure at 10psi. I'm going to do the water test mentioned too and maybe even try my other DIY valves
The arrow should point away (the direction gas should flow, out the valve).
What happens if you pressurize the valve then disconnect it from the gas? Does the gauge move? My gauge slowly decreases... like when from 12 to 9 over night.
Of course they are made to hold pressure going backwards. That's the whole idea of a self-sealing disconnect. If this weren't the case then you'd need a shutoff valve in front of every disconnect in order to be able to disconnect them without wasting CO2. The guys you talked to were obviously trying to blame the issue on somebody else's product which is quite dishonest of them IMHO.Apparently the QDs are not made to hold pressure in going backwards.
It's called quick disconnect for a reason, namely that it can be simply pulled off without the need to shut off the CO2 supply every time.
The reason it appears not to leak when connected to a keg is that a keg holds 1000X more gas than just the QD/spunding valve assembly. If it takes hours for the detached apparatus to lose pressure it'll take days for the keg to vent all its CO2, possibly weeks if you account for the beer degassing until it becomes completely flat.
FWIW, both of the two I got from Lion Brewing had small leaks when testing by pressurizing/removing (both came with CMB disconnects, BTW). I just got a roll of EVA barrier tubing, so I took Robert's suggesting and re-fitted them with longer pieces of line connecting everything. One held pressure completely/perfectly over night at ~15psi. The other seems to be leaking 4-5 PSI/day. I have it in some water now covering everything but the face/body of the pressure gauge, but the leak seems to be too slow to throw noticeable bubbles.
so one of them holds pressure when not connected to a keg? I replaced the tubing on mine with longer segments as well. I think i have a QD allaying around somewhere that has a barb fitting (not swivel nut). I’ll try attaching that.
Yeah inevitably you get some air clinging to everything when you submerge it.Yep, one seems to hold just fine when not connected. The other one is still sitting in water and has lost ~2-3 psi since this morning. I think I'm getting small bubbles/leaks on 2 sides of the tee fitting - it's really hard to tell for sure.
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