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 5925-01-431-7057
NSN 6110-00-838-0492
NSN 6150-01-145-2474
NSN 6645-00-859-8404
NSN 4140-00-279-3148
NSN 5985-01-534-2170
NSN 6105-00-812-0505
NSN 4140-00-322-9987
NSN 5910-01-168-9440
NSN 5925-00-615-7071
NSN 5920-01-258-0617
NSN 6685-00-201-8933