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 6320-01-089-9086
NSN 6150-00-113-8619
NSN 5930-01-525-8279
NSN 5925-01-148-7756
NSN 5999-01-646-1630
NSN 5975-01-232-8049
NSN 6685-01-325-4218
NSN 7035-00-931-9415
NSN 5960-01-106-3086
NSN 5998-00-842-0866
NSN 6320-00-456-2092
NSN 5835-00-998-5757