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 6135-01-009-4929
NSN 6135-00-801-0587
NSN 6240-00-115-8008
NSN 5975-00-587-4871
NSN 6650-01-541-4357
NSN 6685-01-633-8901
NSN 7035-00-163-6221
NSN 5965-01-265-6814
NSN 5915-01-015-5164
NSN 5910-00-276-8592
NSN 5998-01-327-5653
NSN 5920-01-158-4517