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 6620-01-652-4349
NSN 6620-01-065-8265
NSN 6610-01-621-4621
NSN 5998-01-326-0497
NSN 7035-01-106-3476
NSN 5935-00-397-0890
NSN 6240-00-840-8142
NSN 5996-01-502-7877
NSN 6240-01-013-8895
NSN 5920-00-189-0858
NSN 5945-00-406-6410
NSN 5920-00-841-7283