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 5960-00-027-3681
NSN 6240-01-202-5649
NSN 6110-00-728-4515
NSN 6685-01-534-8535
NSN 5915-00-799-7369
NSN 6130-00-081-2186
NSN 5895-01-415-2476
NSN 5999-01-206-8826
NSN 2925-01-177-1598
NSN 5915-00-525-3990
NSN 7035-01-491-0266
NSN 6145-01-658-9099