“It is a great idea and works well in theory, but the first unit I received developed an air leak right away and would not maintain pressure for more than a few minutes. Outback Equipment quickly sent me a new unit, which also developed an air leak. Instead of sending it back, I purchased some JB Weld plastic weld putty and sealed it myself. Both times, these leaks were in the middle of the flat part of the end where the cap joins the octagonal tube. I have attached a video showing the leak on the second one.”