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 4140-00-839-4911
NSN 6645-00-287-9192
NSN 5930-01-582-2654
NSN 5925-01-168-7812
NSN 7035-01-013-9889
NSN 5999-00-363-3435
NSN 5915-01-167-8506
NSN 5998-01-353-3266
NSN 5999-01-485-2449
NSN 5975-01-387-7855
NSN 5920-01-115-9710
NSN 5965-00-458-7321