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 5895-01-418-1764
NSN 6105-01-043-6180
NSN 5910-01-039-9086
NSN 5920-01-470-8851
NSN 6645-00-961-5477
NSN 6150-01-295-1969
NSN 5935-01-516-0635
NSN 6135-01-625-0765
NSN 5975-01-303-9429
NSN 5996-01-513-0323
NSN 5998-01-547-5709
NSN 2925-00-090-5018