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 5855-00-944-0949
NSN 6685-01-346-7677
NSN 6650-01-467-2355
NSN 6685-00-079-0057
NSN 6620-01-422-9708
NSN 6320-01-255-2096
NSN 5920-01-387-7779
NSN 5999-01-251-5912
NSN 5985-01-468-6482
NSN 5910-01-250-1359
NSN 6685-00-571-9401
NSN 6610-01-202-4718