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 6685-00-140-5237
NSN 6610-00-958-0294
NSN 6610-01-077-3303
NSN 6145-01-392-1116
NSN 6110-01-161-4873
NSN 5835-01-130-8258
NSN 6135-01-555-4283
NSN 5965-01-200-6613
NSN 6620-00-176-5722
NSN 5960-01-495-0859
NSN 5905-01-412-1792
NSN 6110-00-507-1256