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 5990-00-258-0228
NSN 5998-01-406-4490
NSN 6610-01-645-1816
NSN 5965-00-486-7907
NSN 6130-00-042-7952
NSN 6240-01-351-6729
NSN 6650-01-528-8230
NSN 5999-00-624-2226
NSN 5910-01-498-5075
NSN 6145-01-014-0145
NSN 6610-01-278-9387
NSN 2925-01-091-4734