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 5930-01-429-0944
NSN 6320-00-004-9158
NSN 5905-01-031-0445
NSN 4140-01-421-6945
NSN 5990-00-295-9497
NSN 5998-01-502-0004
NSN 6220-00-276-8681
NSN 4140-01-196-7490
NSN 6685-01-634-0611
NSN 7035-00-997-6212
NSN 6145-01-608-6233
NSN 5835-01-370-4292