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 5985-00-060-8715
NSN 5960-01-364-9795
NSN 6620-00-663-8962
NSN 6150-01-078-8101
NSN 6240-01-066-0110
NSN 6240-01-495-4211
NSN 5950-01-051-3906
NSN 5925-01-485-0670
NSN 6685-01-037-1132
NSN 5990-01-452-0911
NSN 6220-00-752-8479
NSN 6135-00-715-4001