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 6240-01-473-0864
NSN 6150-01-393-8869
NSN 5999-01-502-8775
NSN 5905-00-560-5709
NSN 5945-01-123-9879
NSN 5905-00-605-2982
NSN 5895-00-403-1040
NSN 7035-00-252-7467
NSN 5985-00-131-6751
NSN 5990-01-641-0123
NSN 6145-01-345-1060
NSN 6145-01-393-4899