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 6135-00-904-6780
NSN 5999-00-302-1741
NSN 5960-01-538-2082
NSN 6110-00-781-7842
NSN 5985-00-180-1366
NSN 5985-01-384-6200
NSN 5950-01-596-3710
NSN 6620-00-070-2680
NSN 5996-01-245-8209
NSN 5835-00-275-0584
NSN 5835-00-005-7909
NSN 6320-01-532-7491