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 6220-01-130-1938
NSN 5950-01-579-4055
NSN 5855-01-125-9167
NSN 5996-00-692-6679
NSN 6610-01-576-8955
NSN 6685-01-627-1836
NSN 5910-01-605-2233
NSN 5910-01-361-6269
NSN 6145-00-813-4459
NSN 5996-01-317-7289
NSN 5945-01-634-0588
NSN 5996-00-138-9072