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 6145-00-161-2394
NSN 5930-00-707-5696
NSN 5965-01-502-3650
NSN 5915-01-290-2396
NSN 6650-01-300-1668
NSN 6610-00-194-0676
NSN 5915-01-615-2943
NSN 5999-01-457-5678
NSN 6220-01-634-0660
NSN 6240-01-551-1722
NSN 6620-00-959-6614
NSN 6150-01-626-8074