A valve that controls flow by a circular disk, or a pair of semicircular disks, attached to a common spindle or lever turning on a diametral axis.
NSN 5998-01-063-9493
NSN 6135-00-422-3967
NSN 5985-00-248-4978
NSN 6220-01-428-8801
NSN 6130-01-502-4284
NSN 5960-01-337-1191
NSN 6105-01-523-5210
NSN 5910-01-469-7612
NSN 5996-00-501-4326
NSN 6610-00-925-5064
NSN 2925-01-624-2965
NSN 5925-01-583-2436