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 6130-01-055-9066
NSN 5930-00-245-0719
NSN 4140-01-136-9802
NSN 5895-01-578-4925
NSN 6150-01-296-9721
NSN 5965-01-089-8579
NSN 5930-00-902-3486
NSN 5905-00-919-8623
NSN 6240-01-384-7231
NSN 5998-00-260-1899
NSN 5985-01-518-7394
NSN 5990-00-659-8067