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 6645-01-430-2420
NSN 2925-01-471-4912
NSN 5855-01-170-8957
NSN 5935-00-435-8466
NSN 5905-01-219-3928
NSN 6110-01-615-9705
NSN 2925-01-629-9416
NSN 6145-00-559-7774
NSN 7035-00-173-2281
NSN 5975-01-568-4872
NSN 5960-01-276-7836
NSN 5910-01-021-9172