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 5950-00-430-6332
NSN 5935-01-207-0637
NSN 5975-00-012-4376
NSN 4140-01-078-8601
NSN 5998-01-502-7845
NSN 5960-01-407-1350
NSN 5960-00-104-5955
NSN 5950-00-952-4527
NSN 6145-01-244-8758
NSN 4140-01-044-7993
NSN 6685-01-006-7569
NSN 5920-01-536-9253