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 5945-00-185-6609
NSN 6145-01-616-7442
NSN 6320-01-473-9024
NSN 6620-00-019-5499
NSN 5945-00-134-5585
NSN 6620-00-581-8984
NSN 6110-01-322-4659
NSN 5965-01-399-8454
NSN 5905-01-276-0372
NSN 5998-01-544-1556
NSN 5998-00-216-8107
NSN 5990-00-709-7378