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 5999-01-238-4523
NSN 5999-01-654-5847
NSN 7035-00-981-7216
NSN 5855-01-521-0681
NSN 6650-01-365-1894
NSN 5945-01-612-7148
NSN 4140-00-355-5364
NSN 5985-00-997-7936
NSN 5950-00-547-9995
NSN 5855-01-602-9335
NSN 6685-01-085-2496
NSN 5895-00-466-3100