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 5985-01-218-5643
NSN 5996-01-472-7028
NSN 6220-01-050-8122
NSN 6110-01-550-1340
NSN 5945-01-388-5921
NSN 6650-00-195-7519
NSN 5975-00-504-9347
NSN 5925-01-254-9380
NSN 6685-01-634-0611
NSN 6685-00-552-8380
NSN 5975-00-388-9589
NSN 6610-00-296-5007