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 5835-01-247-0717
NSN 5985-00-906-1115
NSN 6240-01-650-1742
NSN 5855-01-147-6024
NSN 5855-01-400-1590
NSN 6645-01-060-5916
NSN 6650-01-633-9147
NSN 5950-01-438-8990
NSN 6685-01-078-7449
NSN 6240-01-406-5345
NSN 7035-01-166-1141
NSN 5905-01-149-4636