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 5996-01-253-8676
NSN 6620-01-228-1571
NSN 5835-01-090-0784
NSN 5996-00-054-2498
NSN 6150-01-164-7700
NSN 5975-00-177-0839
NSN 6135-00-128-1633
NSN 6645-00-088-4079
NSN 5905-00-021-9500
NSN 6240-01-645-4797
NSN 6610-01-616-8852
NSN 5975-01-535-0034