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 5985-01-654-0049
NSN 2925-01-607-4340
NSN 6220-01-277-0549
NSN 6320-01-624-0193
NSN 5996-00-252-2759
NSN 6110-01-502-1755
NSN 6645-00-456-7653
NSN 2925-01-545-2717
NSN 6650-00-409-0907
NSN 4140-01-318-1523
NSN 5910-00-849-6474
NSN 6220-01-519-2892