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 5965-01-474-5654
NSN 6135-01-511-1975
NSN 5905-01-300-2251
NSN 6150-01-317-0802
NSN 5935-00-295-6966
NSN 6650-01-633-9147
NSN 6650-01-062-3611
NSN 5990-01-647-8574
NSN 4140-01-480-1301
NSN 6145-01-281-6181
NSN 5985-01-327-5971
NSN 5930-00-565-5158