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 5996-00-815-4650
NSN 5935-01-573-6824
NSN 6135-01-322-4655
NSN 4140-01-336-7722
NSN 5915-01-207-1416
NSN 5915-00-490-3739
NSN 5945-00-960-6821
NSN 5915-00-335-6336
NSN 5895-01-507-0220
NSN 5965-00-261-8086
NSN 6130-01-135-9237
NSN 6240-01-548-2197