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 6110-01-364-0966
NSN 5920-00-617-9909
NSN 6610-00-224-4252
NSN 6320-01-449-1014
NSN 5975-01-505-9496
NSN 6650-00-246-3751
NSN 5835-01-100-3265
NSN 6220-01-416-1744
NSN 6610-01-646-9101
NSN 6240-01-586-9718
NSN 6650-01-282-8015
NSN 5920-00-959-5664