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 6685-01-413-4632
NSN 5925-00-364-7969
NSN 6110-01-023-8496
NSN 7035-01-426-4133
NSN 6135-01-542-5902
NSN 4140-01-541-9772
NSN 5835-01-174-7700
NSN 5975-00-001-1397
NSN 5925-01-534-4866
NSN 5925-01-339-2078
NSN 5905-01-438-3797
NSN 5855-01-277-1663