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 6685-01-045-4525
NSN 5925-01-504-7731
NSN 5990-01-167-3030
NSN 5930-00-159-0843
NSN 5915-00-007-1297
NSN 5965-01-435-6644
NSN 6130-00-781-4245
NSN 6240-01-463-8276
NSN 6105-01-337-9276
NSN 5835-00-518-2740
NSN 6220-01-013-4559
NSN 5999-00-626-7531