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 6645-01-584-0892
NSN 5999-01-583-9593
NSN 5835-01-263-1293
NSN 5985-00-758-0138
NSN 6145-01-497-4696
NSN 6620-01-526-1478
NSN 6620-01-237-5603
NSN 6320-00-882-7061
NSN 5895-01-634-0190
NSN 5930-01-207-0082
NSN 6135-01-079-7852
NSN 6105-01-019-1435