Chest-Mounted Oxygen Regulator

The CRU-103 is a man-mounted regulator that provides 100% oxygen to the aircrew member. It is compatible with both liquid oxygen and on-board oxygen generation systems. The regulator provides positive pressure breathing to the pilot as a function of altitude and in response to a pneumatic signal from the crewmember's G-suit.

Carleton developed the CRU-103 regulator as part of the Advanced Tactical Life Support System. Its features include:

• Weight - 12 ounces
• Dimensions - 3 x 4 x 2 in.
• Inlet pressure - 5-120 psig
• Flow - 0-240 slpm
• Operating altitude range - 0-50,000 ft.
• Operating temperature range - 65 degrees F to 160 degrees F

Liquid Oxygen Fill, Buildup, Vent Valve

Carleton's liquid oxygen fill, buildup, vent valve is designed to control liquid and gas flow in the fill, buildup and vent circuits of 70 and 300 psig liquid oxygen converter systems. The valve mates with a ground servicing device which meets CRU-59/E requirements.

The valve is automatic, eliminating the need for separate fill, buildup and vent valves and is qualified to MIL-PRF-25961. Its one-piece, high strength aluminum body eliminates potential leak paths.

Carleton's valve is approved for use with all liquid oxygen converters in the U.S. Air Force and U. S. Navy inventories.

Oxygen Manifold and Check Valve Assembly

The manifold and check valve assembly is part of the oxygen distribution system for the U.S. Navy's P-3 maritime patrol aircraft. It is comprised of a manifold body, which contains a filler port, six check valves, three ports for connecting to high pressure oxygen cylinders, and an outlet port. The check valves direct oxygen flow to the high-pressure cylinders during filling and to pressure-demand breathing regulators through the outlet. Additionally, the check valves prevent backflow through the filling port or from any one cylinder to another.

To reduce the risk of fire in this high pressure oxygen system, the manifold body is made from Monel and the valve seats from Vespel.

Emergency Oxygen Systems (EOS)

Aircraft Emergency Oxygen Systems (EOS) provide a source of gaseous breathing oxygen to aircrew members upon failure of the primary system. A typical system is comprised of a pressure storage vessel, a pressure reducer, and a means of connecting the system outlet pressure to downstream equipment.

• A typical EOS reducer includes a pressure-reducing mechanism, pressure gage, filler valve, pressure relief valve and an actuating mechanism.
• Nominal outlet pressure is 50 psig from the reducer to downstream receiving equipment
• Reducer actuation is provided by a user-operated lever, a remotely-operated cam or an electrical solenoid.
• Previously manufactured by Conax Florida and American Safety Flight Systems, these systems, now manufactured by Carleton, are used on the B-2 and V-22 aircraft.

Backup Oxygen System (BOS)

Aircraft Backup Oxygen Systems (BOS) provide a source of gaseous breathing oxygen to aircrew members, and supplements the gas provided by an on board oxygen generation system (OBOGS). A typical system is comprised of a pressure storage vessel, a pressure reducer, and a means of connecting the system outlet pressure to downstream equipment.

• A typical BOS reducer includes a pressure-reducing mechanism, pressure gage, pressure transducer, filler valve, two pressure relief valves and an actuating mechanism.
• Nominal outlet pressure is 50 psig from the reducer to downstream receiving equipment.
• Reducer actuation is provided by a user-operated lever or a cam remotely-operated by a cable attached to a ball or ring.
• Previously manufactured by Conax Florida and American Safety Flight Systems, these systems, now manufactured by Carleton, are used on the B-1 and B-2 aircraft.