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 2925-01-107-7939
NSN 5910-01-251-6883
NSN 5960-00-938-5897
NSN 5935-00-003-8099
NSN 5960-00-369-8018
NSN 5998-01-443-8907
NSN 6110-01-088-8143
NSN 6150-00-296-2361
NSN 5998-00-374-2088
NSN 2925-01-016-3111
NSN 5920-00-661-0840
NSN 5935-00-284-3984