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 6150-01-645-1142
NSN 5910-01-067-2506
NSN 5925-01-648-8151
NSN 6145-01-468-6252
NSN 5920-01-220-1911
NSN 5990-01-050-1102
NSN 5998-01-012-0981
NSN 5930-01-347-0755
NSN 2925-01-415-0264
NSN 5935-01-337-1555
NSN 5945-00-688-9284
NSN 6650-01-187-5937