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 5990-01-411-5930
NSN 6320-01-056-1164
NSN 6645-01-303-5855
NSN 5996-00-403-7981
NSN 6150-00-548-3228
NSN 6240-01-270-5998
NSN 6145-00-233-6010
NSN 5930-00-945-6009
NSN 4140-01-388-4289
NSN 6130-00-218-1363
NSN 5935-01-403-2844
NSN 6685-00-555-2810