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 6145-01-055-8851
NSN 7035-00-009-8705
NSN 6685-01-197-7386
NSN 5930-01-631-7080
NSN 5985-01-482-7008
NSN 5960-01-357-1261
NSN 5996-01-227-4496
NSN 5945-01-206-9421
NSN 5999-00-233-6366
NSN 4140-01-281-4058
NSN 6130-00-718-0860
NSN 6135-01-389-8289