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 6240-01-122-0307
NSN 7035-01-466-6251
NSN 5935-00-325-4163
NSN 5996-01-406-7762
NSN 5835-01-495-5986
NSN 6130-01-386-6715
NSN 5905-01-459-8790
NSN 5835-01-608-8868
NSN 6130-00-329-7773
NSN 5855-00-903-4305
NSN 5930-00-129-6675
NSN 5910-01-096-3434