Testing my keggle's new ball valve and pickup tube operation and I can't get it to drain much below the valve body. On the outlet I first tried with a 90 degree copper fitting and short piece of tubing that extended just below the keg bottom. Keggle is up on a counter draining into a bucket on the floor. Only drained to the valve body. Added a hose to the downspout and ran the hose into the bucket and even submerged and it drained to a littllel below the valve body and stopped. I do see that the flow coming out the outlet tube is not the entire volume of the tube. (Hope I explained that right. The water coming the tube is only taking up about 1/2 the insider diameter of the tube.) Not sure if that is preventing a siphon effect and if so, how to fix it. Any help would be appreciated. I was hoping to brew my second batch using this new keggle drain and DIY hopstopper screen filter.