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 2925-01-448-2880
NSN 5920-00-957-6859
NSN 2925-01-348-8306
NSN 5945-01-468-5372
NSN 7035-01-568-5269
NSN 5925-01-391-1014
NSN 5935-01-103-7943
NSN 5935-00-288-5973
NSN 5915-01-125-1484
NSN 5935-01-454-9033
NSN 6685-00-169-6505
NSN 6685-01-065-6680