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 6220-00-269-9942
NSN 5895-00-955-5569
NSN 5999-00-615-7872
NSN 5945-00-311-0684
NSN 5855-01-433-2220
NSN 5960-01-193-5224
NSN 5965-01-067-4946
NSN 5975-01-178-7499
NSN 5998-00-282-2097
NSN 5996-00-667-4295
NSN 5950-01-600-2925
NSN 6145-00-478-3574