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 5930-01-441-5647
NSN 6620-01-025-1443
NSN 6105-01-263-2248
NSN 5895-01-307-3476
NSN 5895-01-511-1430
NSN 6110-01-367-6526
NSN 6240-01-514-4184
NSN 6650-01-415-2238
NSN 4140-01-370-1309
NSN 5975-00-151-7263
NSN 5999-01-020-2342
NSN 5985-01-207-8891