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 5930-00-064-6497
NSN 4140-00-787-1315
NSN 6645-00-456-7653
NSN 5920-00-147-7975
NSN 5996-01-116-1087
NSN 5965-01-592-8748
NSN 5975-01-181-6212
NSN 6135-01-437-7741
NSN 5998-00-719-7610
NSN 6145-01-145-4037
NSN 6685-01-085-4352
NSN 6150-01-397-7417