I have found that this works very nicely to knock out any water in my knock together system. While I only have about 50 feet of copper tubing, by the time it gets to the end it's pretty cool. I've never had any moisture carry over since installing this system.
The clunker HF unit will kick out any big droplets and dirt and the Sharpe knocks out the rest. I originally tried to go cheap with the HF unit, but there was still some, though very minor carry over. I then added the Sharpe, voila!! no more water. The valve also needs to be opened occasionally as it was installed as a drip leg below the 90* turn to the filters - and it works nicely as well. I have since made some mods, taking out the 90* elbow between the filters and added a fairly good wall regulator.