Underwater life support iaw navsea instruction 10560.2b
A valve permitting flow in one direction only. It does not have a stem, except when equipped with a lever and weight and has no pressure adjustment. It may be inline or cartridge (manifold) design.
NSN 5905-01-528-8660
NSN 6150-01-384-3995
NSN 7035-01-359-6108
NSN 6130-00-699-8134
NSN 5985-01-379-5646
NSN 5925-00-857-4850
NSN 5910-01-354-4005
NSN 6620-00-106-9658
NSN 5950-01-233-4204
NSN 6645-00-860-6967
NSN 5925-01-435-7692
NSN 5950-01-558-6135