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 6145-01-171-4011
NSN 6320-01-102-0799
NSN 6240-01-407-5690
NSN 7035-01-406-5232
NSN 5915-01-500-6907
NSN 5835-01-540-4995
NSN 5945-01-314-3098
NSN 5975-01-290-5789
NSN 6130-01-455-1676
NSN 5855-01-067-4129
NSN 5915-01-067-8604
NSN 6150-00-167-8967