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 5960-01-553-4557
NSN 5920-01-594-5177
NSN 6150-01-395-3031
NSN 5895-01-544-8188
NSN 6110-01-042-4117
NSN 6145-01-455-5570
NSN 6685-01-500-8158
NSN 7035-01-560-8371
NSN 5945-00-237-9881
NSN 6620-00-726-4849
NSN 5985-01-026-1133
NSN 6620-01-550-3390