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 6645-00-646-6631
NSN 6620-00-460-2909
NSN 6240-00-442-6327
NSN 5930-00-914-7855
NSN 6685-01-025-9821
NSN 2925-01-629-9416
NSN 5960-01-599-9821
NSN 6145-01-535-0295
NSN 5930-01-010-2947
NSN 5975-01-574-9562
NSN 6320-01-630-7629
NSN 4140-00-122-6422