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 2925-00-480-1531
NSN 2925-01-442-4171
NSN 6145-01-608-1567
NSN 6130-00-900-2614
NSN 5895-00-241-6169
NSN 5996-01-397-7251
NSN 5965-01-571-5065
NSN 7035-01-398-9581
NSN 5905-00-910-4188
NSN 6685-01-525-1911
NSN 6220-01-488-7956
NSN 5915-00-856-9424