Genuine ViperONE AIR 2 Liter Pressure Canister BOTTOM CONTAINER ONLY #IGV2J036. The Pressure Canister MUST be flushed and cleaned after EVERY USE! Otherwise the corrosive nature of any pretreat solution will corrode thru the thin aluminum wall and create a leak. Always rinse out the canister every day or, after use. Never allow the pretreat solution to sit in the can overnight, or for extended periods.