As a leader in oxygen and life support marine systems that meet the stringent SUBSAFE and level I sourcing requirements of the US Navy, Cobham makes such oxygen life support products as flow control valves, oxygen regulators, pressure reducing manifolds, and oxygen generator valves. A variety of other actuation products such as solenoid valves, mechanical halon time delay valves, escape trunk regulators, and mechanical shutoff valves are also manufactured. Cobham’s expertise in oxygen and actuation systems can be utilized to customize solutions for a variety of other onboard customer applications.
Oxygen and Life Support Products
The Manual Globe Valve - All U.S. Navy nuclear submarines contain 3000 psi oxygen systems for life support. Cobham supplies a variety of military specification 1 manual valves to control the flow of high-pressure oxygen throughout the system. Cobham manual valves are used on all U.S. Navy nuclear submarines.
The High Pressure Oxygen Regulator reduces high pressure inlet oxygen in a range of 200 to 3,000 psig to an outlet pressure of 125 psig. It is used in primary and emergency life support systems on submarines.
The 3423-0001 series manifold is an Oxygen Pressure Reducing Station Assembly installed on many U.S. Navy Submarines. This manifold provides integrated control of pressure and flow to a breathing apparatus installed at the outlet port.
Oxygen Generator Valves - All U.S. Navy nuclear submarines use an electrolytic oxygen generator (EOG) to convert water into oxygen and hydrogen gases. Carleton's valves are used to control the flow of water, hydrogen and oxygen through the generator.
Actuation Products
Cobham's Latching Solenoid Valve is used on the U.S. Navy Arleigh Burke Class Guided Missile Destroyer Turbine Braking System. When the turbine braking system is activated, the latching valve supplies pneumatic pressure to actuate the braking calipers. Cobham also supplies the turbine braking system pneumatic high pressure regulator.
The Halon Time Delay Valve - U.S. Navy surface ships use halon fire suppression systems. When the fire suppression system is activated a 30- or 60-second delay is required to allow the room to be isolated and for personnel to evacuate. Cobham's halon time delay valve controls the delayed release of halon.
The Escape Trunk Regulator is used to achieve and maintain hyperbaric pressure in the emergency escape chamber of submarines. By equalizing chamber pressure to that of the surrounding environment, the passenger or crew can acclimate themselves to a new ambient pressure, allowing them to easily leave or enter the sub at depth.
Mechanical Actuators - U.S. Navy nuclear submarines store high-pressure oxygen outside the pressure hull. The high-pressure oxygen is brought into the submarine through a hull penetration tube welded into the bulkhead. Emergency situations sometimes require the oxygen supply to be turned off from remote locations. Cobham's lanyard operated mechanical actuator is mounted on top of the hand valve and is used to remotely shut off the oxygen supply.