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 5990-01-167-3030
NSN 6145-00-578-7522
NSN 6650-01-506-0386
NSN 5996-01-605-3377
NSN 5925-00-898-7243
NSN 5960-01-023-8037
NSN 5965-00-142-9052
NSN 6610-01-476-7412
NSN 6130-01-147-4748
NSN 6110-01-011-8083
NSN 6240-01-070-6028
NSN 6645-01-108-3457