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 5905-01-168-7806
NSN 5915-01-357-1785
NSN 5985-00-518-7252
NSN 6130-00-512-1275
NSN 5945-01-048-5615
NSN 5935-00-542-9998
NSN 6685-01-206-0646
NSN 5920-01-381-7691
NSN 6240-01-054-2289
NSN 7035-01-164-6835
NSN 2925-01-444-6676
NSN 6105-01-633-8975