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 6130-01-031-5057
NSN 6610-00-664-2190
NSN 4140-00-224-2133
NSN 5975-01-587-9892
NSN 5925-01-301-6698
NSN 5985-01-086-9135
NSN 5915-00-832-4814
NSN 6685-00-543-1409
NSN 5925-00-419-3958
NSN 6145-00-497-1578
NSN 6240-01-154-4219
NSN 6610-01-354-3087