Valve size 4.000 in.
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 6110-01-629-1601
NSN 5990-01-480-9938
NSN 6145-00-334-8635
NSN 5999-00-818-3918
NSN 5895-01-432-1279
NSN 6650-01-610-9238
NSN 5990-00-362-1453
NSN 5950-01-025-4751
NSN 2925-00-804-8971
NSN 5920-00-847-6370
NSN 6105-01-352-7042
NSN 6150-00-113-6608