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 5960-01-103-5476
NSN 6610-00-500-6944
NSN 6645-01-546-0491
NSN 5999-00-249-1780
NSN 6135-00-917-1894
NSN 6135-00-451-0709
NSN 6650-01-534-5787
NSN 5910-00-314-3852
NSN 6110-01-012-1759
NSN 6150-01-603-2774
NSN 5855-01-064-8961
NSN 6110-01-229-9880