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 6135-01-472-9011
NSN 5930-01-500-9516
NSN 6685-01-177-4870
NSN 5935-00-287-5069
NSN 5965-00-729-6835
NSN 5985-01-123-9484
NSN 2925-01-196-6187
NSN 6130-01-591-5699
NSN 4140-01-178-5729
NSN 6145-01-377-5130
NSN 5835-00-568-2956
NSN 6645-00-833-2395