Not possible if you dont have large tank to tap from. Also does that adapter allow the air to escape to be displaced by the liquid Propane ?I lucked out when someone was getting rid of some RV supplies and they had a bulk tank liquid tap with hose and tank adapter valve to fill their camper and have been filling our portables for bulk price. And that's a lot as I have over a dozen tanks from 100 down to 5 #. Best $50 I spent that summer.