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 6130-00-912-8073
NSN 7035-01-533-7421
NSN 5950-01-528-8796
NSN 6320-01-134-7267
NSN 6620-01-116-3983
NSN 5950-00-716-2110
NSN 5915-01-219-0869
NSN 6220-01-449-5814
NSN 6620-01-094-6549
NSN 6220-00-594-8817
NSN 5915-01-277-0721
NSN 5999-01-648-2640