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 5996-01-027-0702
NSN 6650-01-067-0132
NSN 5998-01-078-3885
NSN 6645-01-573-7603
NSN 5998-01-432-1596
NSN 5985-01-521-2625
NSN 5925-01-501-8667
NSN 5905-01-501-4541
NSN 6105-01-089-1325
NSN 5905-01-411-2853
NSN 5985-00-186-8755
NSN 5945-01-533-8873