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 6135-01-040-1446
NSN 5895-01-468-6215
NSN 5998-01-330-3663
NSN 6135-01-643-5809
NSN 6685-01-070-6341
NSN 5910-01-009-0186
NSN 5920-01-270-0615
NSN 6645-01-240-5499
NSN 5996-01-469-6848
NSN 5920-00-983-8630
NSN 6135-00-062-5080
NSN 5920-01-519-8835