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 5925-00-925-3921
NSN 5935-01-387-6614
NSN 2925-00-265-7539
NSN 5996-01-535-9175
NSN 5990-00-870-0656
NSN 5990-00-621-7457
NSN 5835-00-660-4523
NSN 6110-01-207-2112
NSN 6150-01-437-1588
NSN 6620-00-932-4306
NSN 2925-00-265-7539
NSN 5950-00-231-4879