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 5998-01-444-2481
NSN 6650-01-030-5545
NSN 6105-01-624-5068
NSN 5855-01-426-5589
NSN 5935-01-066-7753
NSN 6645-01-242-9699
NSN 5965-01-132-1427
NSN 5930-01-012-6286
NSN 6645-01-123-3056
NSN 5905-00-010-8077
NSN 5935-01-437-0327
NSN 5920-00-759-1003