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 6685-01-650-6873
NSN 6620-00-257-2783
NSN 5895-01-436-6225
NSN 5975-00-925-1197
NSN 6150-01-262-3437
NSN 6650-01-370-3919
NSN 5996-01-543-0663
NSN 5985-00-189-7138
NSN 6685-00-534-7376
NSN 6130-01-518-3891
NSN 6105-01-023-7887
NSN 5855-01-474-6820