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 5910-01-074-1488
NSN 5925-00-883-7673
NSN 5910-00-926-0111
NSN 6620-01-420-8666
NSN 6145-00-738-5601
NSN 6645-00-967-8401
NSN 6685-00-491-1101
NSN 6620-00-498-7781
NSN 6135-01-136-8306
NSN 6240-01-269-8454
NSN 5910-00-963-8070
NSN 5996-01-659-4254