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 5930-01-518-4257
NSN 5975-01-230-3043
NSN 6240-00-845-9098
NSN 6645-01-224-8973
NSN 5998-01-482-0546
NSN 5996-01-491-8331
NSN 5990-01-097-4721
NSN 5930-01-381-1829
NSN 5999-00-237-7362
NSN 6110-01-378-6499
NSN 5915-00-756-2699
NSN 6240-01-235-8281