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 6650-01-413-0133
NSN 5945-00-858-0392
NSN 6220-01-256-6400
NSN 6105-01-469-3486
NSN 5950-01-104-5425
NSN 5905-00-434-0790
NSN 6685-00-854-9169
NSN 5999-00-415-1222
NSN 5935-01-371-4768
NSN 5990-00-888-7761
NSN 6150-01-433-3233
NSN 5960-01-023-8037