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 5905-01-050-9963
NSN 5999-01-399-4113
NSN 6110-01-077-9604
NSN 5920-01-525-7688
NSN 6105-01-411-5692
NSN 5985-01-290-1358
NSN 7035-00-541-8516
NSN 5920-01-268-2648
NSN 5996-01-326-0330
NSN 6645-00-641-3202
NSN 6135-01-156-4627
NSN 6145-01-209-2467