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 5996-00-045-8379
NSN 6240-01-598-3969
NSN 5975-00-956-3890
NSN 5975-01-184-5831
NSN 5999-01-329-0309
NSN 6110-00-170-6520
NSN 2925-01-472-4423
NSN 5975-00-382-2722
NSN 6130-01-482-1473
NSN 5935-01-410-7731
NSN 5835-01-608-8868
NSN 5999-01-010-3221