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 5835-01-447-2544
NSN 5835-01-416-6455
NSN 6610-00-481-1197
NSN 6620-01-207-0667
NSN 5999-01-026-1644
NSN 6145-01-568-2227
NSN 4140-01-534-2552
NSN 6105-01-049-2930
NSN 5990-01-362-7532
NSN 6685-01-356-8044
NSN 5999-01-236-7054
NSN 6685-01-551-1293