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 7035-01-026-1171
NSN 6240-01-401-5340
NSN 6220-01-341-0630
NSN 7035-00-104-7613
NSN 5975-00-404-1270
NSN 2925-01-157-9204
NSN 5965-01-435-3414
NSN 5998-01-553-3602
NSN 5935-01-569-6325
NSN 5915-01-287-0012
NSN 6320-01-066-1766
NSN 6130-00-701-0029