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 5985-01-469-6320
NSN 5990-01-122-9149
NSN 6130-01-227-2115
NSN 6610-01-530-4528
NSN 5975-01-412-3449
NSN 5960-01-628-2760
NSN 7035-01-013-9889
NSN 6240-00-717-0844
NSN 6145-01-547-6651
NSN 6130-01-634-0603
NSN 5935-01-275-7593
NSN 6145-01-550-9633