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 5925-00-140-6367
NSN 5915-01-368-2895
NSN 5945-01-578-3340
NSN 5935-01-512-2044
NSN 5910-01-576-3209
NSN 6150-01-558-9929
NSN 6620-01-163-6932
NSN 5985-01-512-9020
NSN 6645-00-968-6118
NSN 5990-01-616-9342
NSN 6320-01-246-4390
NSN 6650-01-209-1422