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 6105-00-421-9781
NSN 6110-00-141-1966
NSN 5855-00-925-0114
NSN 5950-01-483-2125
NSN 5950-01-116-3342
NSN 5925-01-474-6358
NSN 5855-01-426-5589
NSN 4140-01-336-7722
NSN 6620-01-068-4498
NSN 5996-01-608-1254
NSN 6135-00-519-1325
NSN 5930-01-388-3569