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 5935-00-768-9981
NSN 5950-00-035-8791
NSN 2925-01-049-8906
NSN 6145-01-493-6364
NSN 5920-01-083-9912
NSN 6610-01-441-8364
NSN 6130-01-170-5085
NSN 5999-00-221-2281
NSN 2925-01-219-9471
NSN 6145-00-081-2520
NSN 6685-01-074-2857
NSN 6685-01-641-8624