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 6110-01-421-8866
NSN 6620-01-519-2628
NSN 5965-01-633-8849
NSN 5998-01-500-1433
NSN 5950-00-382-9377
NSN 6110-00-960-7341
NSN 2925-00-288-1394
NSN 6130-01-429-0880
NSN 6685-00-203-4485
NSN 5895-00-552-1259
NSN 2925-01-250-2731
NSN 5996-00-707-6228