Noob question: check valve leak?

[imwill]

Ok so I just entered the world of kegging and don't know a lot about this stuff, so if this is a stupid question or if I'm using wrong terminology you can throw rotten tomatoes at me.

So, I'm ready to carb my beer and have found a problem, when I have everything connected and ready(to my knowledge(not much)), I go to turn on the gas, adjust the knob to 11 psi and open the check valve, but there's a leak... and an obvious one by the sound of it.

I can hear and feel gas pushing out of the gas shut-off check valve piece when it's in the open position and open position only. I spray soapy water all over the tank and regulator, and at further inspection it seems to be coming out of the connection between the barb hose adapter and the ball valve itself(A). Well I have bad eyes and concluded it's probably the gas hose connection to the barb(B) that's leaking.
I readjust the hose and clamp to the gas shut-off check valve three times but it still seems the bubbles are coming out the micro space between the valve and the adapter. I tried tightening the barb adapter to the valve as hard as I could(are most of these welded?), but I have the same result.

Has anyone encountered this problem? I wouldn’t put it past myself to be doing something completely wrong or upside down here. Faulty equipment or faulty user? Also I feel like my pin lock gas disconnect doesn't fit as snugly as it should, or at least in my mind. Could this be a problem too? Either way I've included a very technical illustration below;

 

[DeafSmith]

If you are using worm gear hose clamps, the one you have may be too large for the hose diameter and won't exert equal pressure on the hose all the way around. In such cases, I've found it helps to cut a short piece (about 3/4 inch long) of larger tubing which has an ID about the same as the OD of the tubing I'm trying to clamp onto the barb. Slip the short piece of large tubing over the smaller tubing and the hose clamp over the large tubing and tighten it down. This way you are clamping over tubing of the size that the hose clamp was designed for and it remains circular and exerts force evenly on all parts of the tubing. If you can't get the larger tubing to slip over the smaller tubing, even using keg lube (or soapy water), you can try slitting it - just be sure that as you tighten the hose clamp the gap where you slit the tubing closes up as much as possible. I've used this trick with vinyl over vinyl tubing and with 1/2 ID silicone tubing over beverage line with good success.

EDIT: I can't tell exactly what you have from the picture, but it looks almost like the flange of the barb adapter is bottomed out on the valve, which shouldn't happen with tapered threads - could the barb adapter be the wrong size (too small) ? One other possibility is if you are using a FFL to barb adapter (doesn't look like it from the picture, though) and maybe left out the fisheye washer.

 

[JuanMoore]

I agree with DeafSmith about the barb to valve connection looking fishy. Maybe try taking the barb off, wrapping it with some teflon tape, and re-installing it.

 

[beaksnbeer]

There should be a o-ring/seal on the barb end.

 

[imwill]

There should be a o-ring/seal on the barb end.

You mean between the hose and barb adapter? I never thought of that.

I was thinking about removing the barb adapter and wrapping it with teflon but was in denial since this is a brand new regulator.

Thanks for the response guys, if this doesn't work I'll just take it back assuming I havn't mangled the stupid thing.

Either way more time for my kolsch to cold condition!