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 5960-00-187-0429
NSN 6145-01-310-4023
NSN 6135-01-205-5965
NSN 6145-01-501-8588
NSN 6620-00-169-1609
NSN 5920-00-776-0633
NSN 5996-00-071-0042
NSN 6685-01-118-9479
NSN 6145-00-466-4068
NSN 6150-00-665-3959
NSN 6650-01-186-5762
NSN 4140-01-339-5355