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 6110-01-041-8800
NSN 6150-01-214-0363
NSN 7035-00-931-9415
NSN 5855-00-198-3197
NSN 6620-01-242-9247
NSN 6135-00-577-8429
NSN 7035-01-302-5359
NSN 5996-00-138-9938
NSN 5930-01-458-6930
NSN 5990-00-330-5412
NSN 6685-01-435-8700
NSN 6220-01-113-6431