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 5985-00-271-9502
NSN 5915-01-512-8851
NSN 6610-00-526-6085
NSN 4140-01-069-2307
NSN 6240-01-252-8850
NSN 5930-00-089-6745
NSN 5985-01-487-3316
NSN 6130-00-926-0860
NSN 2925-01-150-7160
NSN 6650-00-607-1351
NSN 6145-01-602-1154
NSN 5945-00-650-8992