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 6685-01-445-8939
NSN 6645-01-218-5234
NSN 6685-01-127-7885
NSN 6650-01-378-5435
NSN 5925-01-569-4427
NSN 5965-01-642-9398
NSN 5920-01-237-6517
NSN 6610-01-357-0669
NSN 5960-01-144-1515
NSN 5905-01-041-7503
NSN 5910-01-206-6610
NSN 6320-00-845-3261