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 5996-00-222-6049
NSN 5999-00-004-9956
NSN 5996-01-359-8719
NSN 6620-01-391-7327
NSN 5935-01-279-0194
NSN 5925-00-022-5630
NSN 6610-01-291-4173
NSN 5996-01-353-1597
NSN 5960-00-871-3950
NSN 5965-01-455-7747
NSN 6320-01-181-9474
NSN 6685-00-757-3402