MEDICAL OXYGEN CYLINDER DEALERS IN CHENNAI , MEDICAL OXYGEN CYLINDER DEALERS IN CHENNAI CENTRAL, MEDICAL OXYGEN CYLINDER DEALERS IN CHENNAI PARRYS, MEDICAL OXYGEN CYLINDER DEALERS IN CHENNAI MOUNT ROAD The oxygen cylinder often used for transporting patients with a mask or nasal cannula has a valve that incorporates a pressure regulator, flow dial, and pressure gauge (typically, a PSIG in the United States but there are often two scales—PSIG and bars or 100 kPa, the SI unit) representing the difference between the ...