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 5998-01-573-8979
NSN 6220-01-392-1429
NSN 6620-01-586-7242
NSN 5895-01-658-1744
NSN 5945-01-387-8763
NSN 5835-00-148-9719
NSN 5925-01-241-4590
NSN 5835-00-789-1454
NSN 6645-01-250-3787
NSN 5985-00-522-5495
NSN 6135-01-316-9794
NSN 6145-00-444-9679