Underwater life support iaw navsea instruction 10560.2b
A item specifically designed to automatically/manually maintain outlet pressure in a divers helmet/breathing apparatus. It is designed for use with breathing gasses.
NSN 4140-00-817-6009
NSN 6150-01-356-8290
NSN 5910-00-232-3798
NSN 5960-01-530-8828
NSN 5945-00-951-8112
NSN 5930-01-075-7251
NSN 6650-01-410-8542
NSN 6110-01-174-9569
NSN 6685-01-193-8879
NSN 5945-01-634-0588
NSN 5935-01-026-2313
NSN 6105-01-239-2247