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 5855-01-406-4821
NSN 5920-01-447-1971
NSN 5910-01-044-0575
NSN 6150-01-603-5325
NSN 5935-01-050-9056
NSN 5930-01-550-1814
NSN 5998-00-654-0288
NSN 5996-01-065-0939
NSN 6135-01-100-3593
NSN 6685-00-836-0401
NSN 6105-01-648-2644
NSN 6150-01-647-9181