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 5999-01-173-1240
NSN 5910-01-258-4887
NSN 5930-01-116-2944
NSN 6320-01-627-1594
NSN 5996-01-420-6449
NSN 5905-00-158-4783
NSN 5835-01-100-7405
NSN 6220-01-541-4064
NSN 5835-01-205-3089
NSN 5905-00-333-1128
NSN 5975-00-723-0390
NSN 5975-01-443-2398