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 6685-01-644-6918
NSN 5996-00-356-0680
NSN 5999-01-013-9236
NSN 5975-01-433-8052
NSN 5975-01-578-8709
NSN 6220-01-359-7820
NSN 5975-01-657-4362
NSN 5835-00-902-8680
NSN 5950-01-289-3340
NSN 5950-01-572-0569
NSN 5945-00-457-8964
NSN 5945-01-342-6213