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 5910-01-633-9963
NSN 5945-01-506-2574
NSN 5920-00-529-0618
NSN 5835-01-431-6877
NSN 6610-01-250-2811
NSN 5935-00-755-9684
NSN 6620-00-596-1951
NSN 5990-00-931-4032
NSN 5925-01-444-5274
NSN 6145-01-123-2138
NSN 5925-01-135-2025
NSN 6135-01-142-2417