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 6145-01-460-9225
NSN 5905-01-509-1082
NSN 5985-01-267-1071
NSN 5935-01-163-4355
NSN 5996-01-407-1458
NSN 5895-01-612-5037
NSN 5920-00-084-6046
NSN 5920-01-056-5481
NSN 6645-00-113-4441
NSN 5950-01-537-3181
NSN 5855-01-208-1471
NSN 6150-00-409-9018