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 4140-00-181-0727
NSN 5910-01-298-7886
NSN 5895-01-164-7345
NSN 5895-01-324-5666
NSN 5910-01-190-7670
NSN 6240-01-376-8931
NSN 6130-01-390-5952
NSN 6610-00-683-9881
NSN 6240-00-978-9752
NSN 6105-00-248-5772
NSN 5905-01-205-1725
NSN 5985-01-449-1679