The new all brass uni-body design provides enhanced safety features and a greater number of flow selections. Available with two DISS high flow ports with check valves for facilitating the use of a demand valve, Auto Vent, Manually Triggered Ventilator or oxygen powered aspirator. The barbed fitting outlet provides the patient with constant flow at rates of 0, 1/2,1,2,3,4,6,8,10,15,20, and 25 LPM. Unit comes complete with a low profile contents gauge with a rubber boot for protection.