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 6145-01-068-3234
NSN 2925-00-837-3948
NSN 5835-00-733-9145
NSN 6620-01-098-2960
NSN 5965-00-532-3284
NSN 5855-01-481-3906
NSN 5920-01-065-1824
NSN 5990-01-164-8673
NSN 6645-00-160-0503
NSN 6610-00-034-3709
NSN 6645-01-204-8677
NSN 5975-01-149-2006