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 7035-00-238-3662
NSN 6620-01-658-8133
NSN 5996-01-567-8559
NSN 5985-01-507-6729
NSN 5998-00-771-4866
NSN 5945-00-349-5254
NSN 6135-01-278-9717
NSN 5930-00-277-4704
NSN 7035-01-003-9142
NSN 5905-00-964-7402
NSN 5975-01-319-3041
NSN 5975-00-929-1515