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 5999-00-143-6978
NSN 6620-01-367-0844
NSN 5920-01-566-0158
NSN 5999-01-068-3639
NSN 6620-01-339-1238
NSN 4140-01-467-1986
NSN 6110-01-158-5082
NSN 5945-01-529-4786
NSN 6110-00-246-3941
NSN 6150-00-795-6489
NSN 6685-01-401-5360
NSN 6620-00-919-6710