The Super Luft Air Pump produces high pressure output. Excellent for protein skimmers, oxygen reactors and other devices requiring high flow or pressure. Can also be used with airstones, foam or corner filters, undergravel filters and aquarium ornaments. Good in deep water applications. Features 6 outlet plastic valve, 4 outlet adjustable metal valves and a removable air filter. Output flow rate is 38 liters per minute. Output pressure is 2.9 PSI.