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 5835-01-615-4766
NSN 5996-01-484-8867
NSN 6150-01-658-0542
NSN 5895-00-889-3963
NSN 5960-01-215-0992
NSN 6685-01-246-1912
NSN 6110-00-103-5702
NSN 5985-01-534-8876
NSN 6110-01-214-5794
NSN 5855-00-484-8638
NSN 5930-01-194-8905
NSN 6220-01-557-1776