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 6620-00-220-2157
NSN 5915-00-725-7251
NSN 6220-01-418-2549
NSN 5920-01-206-3977
NSN 5990-01-193-0487
NSN 5965-01-558-3425
NSN 6110-01-012-4710
NSN 5990-01-130-4959
NSN 2925-00-101-7972
NSN 6685-01-462-0141
NSN 2925-01-569-5471
NSN 6320-00-403-6003