(U6P1) 1. The purpose of the oxygen system is to provide oxygen for the flight crew and passengers when required. 2. Two independent oxygen systems are installed in B737. 3. The flight crew oxygen system is a high pressure gaseous system for flight crew use only, this type of system is designated a “diluter demand” system. 4. The passenger oxygen system is a chemically-generated oxygen system for use by passengers and cabin attendants. 5. This type of system is designated a “continuous flow” system.