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 5999-01-578-7948
NSN 5935-01-297-4007
NSN 6150-01-091-7244
NSN 5925-00-913-6165
NSN 5910-00-970-8767
NSN 6620-01-478-7549
NSN 5999-01-171-7722
NSN 6110-00-391-8932
NSN 5960-01-117-1887
NSN 2925-01-316-0725
NSN 6645-01-287-9969
NSN 5985-01-472-2037