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 5895-01-634-0630
NSN 5975-01-092-1075
NSN 5999-00-168-4443
NSN 5925-00-549-3905
NSN 5960-01-573-6483
NSN 5835-00-484-1529
NSN 2925-01-391-1540
NSN 5905-01-238-1611
NSN 5985-01-399-8739
NSN 5895-01-368-4016
NSN 6650-00-224-3223
NSN 5996-01-472-9419