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 5985-01-432-1715
NSN 5935-01-495-8284
NSN 6110-01-142-8624
NSN 6320-01-207-9038
NSN 5910-00-170-7857
NSN 2925-01-633-4048
NSN 5960-01-225-7973
NSN 5930-01-338-5494
NSN 2925-01-076-6128
NSN 5999-00-401-4381
NSN 6620-01-408-4464
NSN 6320-01-431-4359