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 2925-00-383-3523
NSN 6645-00-004-0510
NSN 5895-01-414-7506
NSN 6130-00-163-1905
NSN 6135-01-193-8154
NSN 6145-00-156-4394
NSN 5996-01-642-9154
NSN 6645-01-306-9461
NSN 2925-01-089-6269
NSN 6240-01-324-0323
NSN 6650-00-736-8456
NSN 5950-01-307-1164