Do you need more than one of these in the dip tube? I tried one and didn't see any difference in the pour, it was still too foamy, the beer itself is not over carbed but I'm having a heck of a time trying to figure this out, I tried longer lines, I tried shorter lines, less pressure, more pressure, could it be the poppet valve? Right now I have about 4 feet of 3/16 ID line at about 10 psi, beer about 40°, it's a ball lock keg
fwiw, before I switched to 12' lines I typically had to put two sticks down the dip tubes on most brews.
There is a tiny o-ring under the Out dip tube flange that if compromised (or undersized) can allow CO2 under pressure in the head space to be injected into the beer stream at the Out post. The symptom can be as extreme as spitting foam with virtually no liquid beer coming out of the faucet, but one can imagine a tiny leak could be enough to mess up the beer without it being so overt.
Other potential root causes:
- temperature differential between the bottom of the keg and any external point along the way to your glass
- Out post poppet that barely opens
- Liquid disconnect plunger that barely opens
- Out dip tube slammed against the keg bottom and occluding the tube
- Partially (well, mostly) plugged Out dip tube
- pinhole leak in the Out dip tube. Once it's above the beer line the symptoms will be similar to the Out dip tube flange o-ring failure
- And, finally, the most popular of all: over carbonated beer...
Cheers!
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