Pail Can Crusher. Model 5P RAM FLAT Compactor can reduce the volume of most containers by up to 90 ! At 120 psi, a 17 inch tall 5 gallon pail becomes a 2.5 inch pancake while a 12 inch 1 gallon can is reduced to only 1 inch. Air Powered. The pneumatic Model 5P RAM FLAT Compactor only needs clean, dry compressed air.