The Air Force PL refillable spray system gives you the best of both worlds: the convenience of aerosols and the safety cost effectiveness of non-aerosol dispensers. Lower operating costs. No more cans to dispose of, no disposal fees. No hazardous or ozone depleting propellant, only 100% active ingredient. The Air Force PL Automatic filling station is convenient, safe and easy to use. Just place the Air Force PL refillable sprayer onto the filling station to fill it with liquid and compressed air in one fast step. No need to handle the liquid. The station is connected to a compressed air line and a cost effective bulk container of Walter’s high performance cleaner/degreaser AF-PL.