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 6110-01-444-5031
NSN 5895-01-138-9852
NSN 6105-00-337-0904
NSN 6685-00-504-1657
NSN 5985-01-270-3939
NSN 5930-01-415-3111
NSN 5975-01-213-3861
NSN 6685-01-009-4346
NSN 5920-00-613-3116
NSN 7035-00-166-0339
NSN 5905-01-502-2648
NSN 6620-00-825-2227