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 6130-00-306-3159
NSN 6145-01-477-4320
NSN 6610-01-502-8868
NSN 5905-01-463-3116
NSN 6240-01-542-9964
NSN 5855-01-443-3970
NSN 6240-01-187-7758
NSN 5855-00-921-6589
NSN 6105-00-292-4110
NSN 6220-01-497-4290
NSN 6135-00-235-1938
NSN 5996-01-098-6712