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 5999-01-216-8936
NSN 5975-00-144-7878
NSN 5930-01-463-7958
NSN 6135-00-369-2368
NSN 5855-00-221-9435
NSN 6105-00-009-4318
NSN 4140-00-081-6814
NSN 5999-01-626-1749
NSN 5925-00-824-0329
NSN 6645-01-265-2746
NSN 6320-01-556-2011
NSN 6220-00-444-6051