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 5895-01-101-5887
NSN 5960-01-299-5832
NSN 5925-01-252-0199
NSN 5910-01-573-6538
NSN 5975-01-578-9517
NSN 5990-01-562-4521
NSN 6110-00-196-8813
NSN 5998-00-424-9174
NSN 5905-01-294-7561
NSN 4140-00-470-7557
NSN 6110-00-779-0648
NSN 6110-01-549-4275