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 6650-00-707-1417
NSN 6105-01-547-1779
NSN 6135-01-641-4356
NSN 6685-01-300-6775
NSN 5895-01-089-8171
NSN 6610-01-205-6424
NSN 5985-01-443-1206
NSN 2925-01-359-4027
NSN 6145-01-634-0388
NSN 7035-01-631-4095
NSN 5905-00-009-9955
NSN 5996-00-424-2568