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 6645-01-620-0044
NSN 6220-00-204-4647
NSN 5950-00-114-2624
NSN 5990-01-411-5930
NSN 5960-01-544-1273
NSN 2925-01-527-1207
NSN 6220-01-084-4044
NSN 5965-01-525-7513
NSN 5920-01-172-6358
NSN 5930-00-086-8742
NSN 6220-01-430-4268
NSN 2925-00-483-9357