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 5910-01-481-4199
NSN 6105-00-496-3784
NSN 2925-00-301-0933
NSN 5835-00-140-8646
NSN 5925-01-391-7718
NSN 5920-01-075-9273
NSN 5905-00-263-3245
NSN 2925-01-129-1261
NSN 6685-01-515-8743
NSN 5855-00-941-3037
NSN 4140-01-101-6864
NSN 5895-00-006-0197