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 6620-00-596-1951
NSN 5998-01-553-3344
NSN 5930-01-549-8921
NSN 6620-00-085-2908
NSN 6650-00-269-5000
NSN 4140-01-549-5048
NSN 5920-01-564-1349
NSN 5915-01-271-1767
NSN 6685-00-984-6096
NSN 6150-00-089-9503
NSN 6685-00-684-7891
NSN 6110-00-014-6624