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 6150-00-099-0220
NSN 6320-01-006-6138
NSN 5895-01-267-9473
NSN 5905-01-329-1709
NSN 5935-00-721-1452
NSN 6105-01-256-8265
NSN 5855-01-443-2509
NSN 6145-01-156-7868
NSN 5835-01-578-3443
NSN 5999-01-248-0602
NSN 5998-00-541-6292
NSN 5910-01-207-2703