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 6685-01-275-1242
NSN 5915-01-623-7594
NSN 5990-00-254-4825
NSN 7035-01-509-1959
NSN 5996-00-552-9902
NSN 6610-01-433-2219
NSN 6650-01-510-4778
NSN 6610-01-511-0982
NSN 6145-01-253-9898
NSN 6610-01-524-0636
NSN 5910-00-144-4383
NSN 5996-00-383-6173