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 5930-01-613-5221
NSN 5855-00-973-5717
NSN 4140-00-660-8699
NSN 6145-00-437-8960
NSN 5998-00-295-3694
NSN 5930-00-261-6911
NSN 4140-00-420-0251
NSN 6685-01-183-2890
NSN 5975-01-583-1318
NSN 5998-01-181-9702
NSN 5895-01-632-6372
NSN 5998-01-042-1840