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 5895-00-704-1602
NSN 5960-01-495-0859
NSN 5915-00-518-6936
NSN 5985-00-277-0575
NSN 5905-01-040-3339
NSN 5945-01-593-0056
NSN 4140-01-620-0921
NSN 6620-01-401-5356
NSN 6645-01-518-1107
NSN 5985-01-493-4085
NSN 5990-00-946-4545
NSN 6150-01-189-5943