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 6620-01-481-1358
NSN 6135-00-491-9864
NSN 6150-01-158-6841
NSN 5895-01-441-9089
NSN 6610-01-518-3923
NSN 5999-01-375-1453
NSN 5855-00-149-0766
NSN 5855-01-033-1375
NSN 5990-00-633-2774
NSN 6320-00-116-3658
NSN 5895-01-365-4602
NSN 6610-01-592-8642