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 5910-01-537-0532
NSN 6135-01-054-2462
NSN 5930-00-356-3392
NSN 2925-00-445-9419
NSN 5965-01-112-5518
NSN 5855-01-222-1242
NSN 7035-00-513-9764
NSN 5985-01-236-4471
NSN 6220-01-472-2513
NSN 6685-01-441-2936
NSN 5975-01-502-6167
NSN 6240-00-689-8504