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 6610-01-171-3010
NSN 6220-01-524-4570
NSN 5999-00-758-8422
NSN 5945-00-182-2869
NSN 5920-01-415-1733
NSN 5950-00-278-1201
NSN 6110-01-310-7186
NSN 6610-00-103-1196
NSN 6240-01-356-1170
NSN 2925-01-570-3696
NSN 5975-01-464-4517
NSN 5965-01-594-1983