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 5996-01-206-5929
NSN 6240-00-602-5940
NSN 6130-01-436-6397
NSN 6240-01-351-0911
NSN 5990-01-608-3505
NSN 6110-01-432-2442
NSN 5920-01-609-5435
NSN 5925-00-344-1910
NSN 6150-00-968-0540
NSN 6135-00-432-5567
NSN 6110-01-218-5257
NSN 6240-01-537-3218