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 5990-01-116-2181
NSN 5999-01-617-0136
NSN 5998-00-005-1194
NSN 5895-01-511-2899
NSN 6130-01-211-8686
NSN 6220-00-647-3096
NSN 5920-01-490-0610
NSN 5945-01-582-8536
NSN 5960-01-538-2082
NSN 6135-01-031-8078
NSN 6645-01-270-3176
NSN 6610-01-293-9838