The Twin-50 Jump Bottle System is designed for military personnel parachutists for High Altitude
Low Opening (HALO) or High Altitude High Opening (HAHO) jumps. The system is worn on the jumper. It supplies oxygen while preparing for exit, in freefall and under canopy.
Features:
The Twin-50 Jump Bottle System is the HALO/HAHO industry standard having been in sevice for
over 20 years. It consists of four lightweight component assemblies which are designed to deliver diluted oxygen to the parachutist. The oxygen cylinders (Twin 50 cubic inch) are
attached to a pressure reducer assembly. This assembly is equipped with a relief valve, fill
valve, pressure gauge and an oxygen flow On/Off toggle.
The hose assembly is typically 19 inches long and connects the Twin 50 oxygen system to the
Airox VIII metering valve. There is an optional On/Off valve, which connects to the end of the
hose assembly and is easily reached by the parachutist. This allows for convenient control of
oxygen flow to the Airox VIII. Lastly, the Airox VIII oxygen metering valve supplies oxygen and
ambient air, when required, to airborne personnel at flows of 8.2 to 9.3 slpm oxygen from a
nominal inlet pressure of 50 psig.
The Twin-50 Jump Bottle System can also be modified for use with PHAOS and PHANTOM
equipment by the addition of an outlet adapter (part number B47370-1).
Specifications:
Medium
Oxygen
Cylinder Fill Pressure
2,100 psig
(144.8 barg)
Peak inspiratory & expiratory flow
3.3 L (ATPD/sec)
Rate of change of Flow
20 L (ATPD)/sec² @ 3.3 L/sec
Alveolar Partial Pressure of Oxygen
>60 mmHG @ all times
Ergonomic design
Easily operated in darkened aircraft and when wearing bulky equipment, and cold weather clothing
Location on parachutist
Adjustable to procedural and physical
characteristics of the parachutist
