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 5855-00-127-5559
NSN 5996-01-326-4115
NSN 6650-01-384-5270
NSN 6240-01-012-2706
NSN 5925-00-905-5135
NSN 6610-00-410-0940
NSN 6110-00-806-4224
NSN 4140-00-541-9077
NSN 5998-01-042-4360
NSN 6610-00-740-7103
NSN 5925-00-444-0595
NSN 6130-00-167-1138