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 5990-01-135-8269
NSN 5920-01-014-0611
NSN 5935-01-119-0355
NSN 5920-00-827-1094
NSN 5835-01-602-0311
NSN 5999-01-477-5456
NSN 6130-01-425-1231
NSN 5999-01-130-8911
NSN 6645-00-012-5834
NSN 6220-01-322-5660
NSN 5965-00-486-7907
NSN 5910-01-019-3859