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 5920-00-276-8657
NSN 6685-00-622-5417
NSN 5998-01-543-5242
NSN 6650-01-433-1911
NSN 6685-01-576-7452
NSN 6135-00-269-5843
NSN 2925-01-480-0169
NSN 5999-01-660-9958
NSN 5910-01-492-6028
NSN 6110-01-359-3171
NSN 5930-01-412-0254
NSN 6240-01-362-8258