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 6620-01-351-6870
NSN 2925-01-551-5375
NSN 5985-01-646-6475
NSN 2925-01-311-0446
NSN 5996-01-212-4234
NSN 6240-01-347-5476
NSN 6105-00-988-9903
NSN 5925-01-519-3249
NSN 5950-01-103-2423
NSN 6620-00-981-6958
NSN 6650-01-127-9518
NSN 6240-00-168-1474