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 5999-01-610-6517
NSN 5985-00-636-8689
NSN 5905-01-559-5365
NSN 6685-00-107-2846
NSN 5945-01-177-2366
NSN 6320-01-384-3850
NSN 6645-01-437-9017
NSN 5985-01-204-6293
NSN 5915-01-124-2088
NSN 7035-01-400-3666
NSN 5855-01-323-5394
NSN 4140-01-107-7382