Get current pricing for Nalco Porta, 200 Gal Nalco Porta 200 Gal. Nalco Porta - Feed System Dot Spec. No-57, Rated Gross Wt. 3,200 Lbs., Design Press - Psig - 9.0, Original Test Date - 5/95, Tare Wt - 4 . Product Category: Process Equipment, Sub Category: Process Hoppers/bins: