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 6145-01-540-7751
NSN 5985-00-733-7711
NSN 5905-01-599-0069
NSN 6105-00-960-0072
NSN 6320-01-276-4739
NSN 6320-01-435-5991
NSN 6145-01-444-9955
NSN 6240-00-960-8458
NSN 5835-01-373-9506
NSN 5990-00-042-3413
NSN 6685-01-011-4859
NSN 5910-01-327-9280