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 5985-00-476-8271
NSN 5835-01-089-7615
NSN 4140-01-323-4279
NSN 5990-00-926-4324
NSN 6130-00-233-7639
NSN 6110-00-624-7172
NSN 6610-01-373-3626
NSN 6135-00-937-4118
NSN 4140-01-541-0303
NSN 6220-01-526-6858
NSN 7035-01-099-9163
NSN 2925-01-601-5050