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 5910-01-457-2002
NSN 5915-01-080-2734
NSN 5925-01-506-0529
NSN 6130-00-647-8471
NSN 5975-01-231-1966
NSN 2925-01-556-0333
NSN 5905-00-754-3327
NSN 5905-01-202-8323
NSN 5895-00-534-3163
NSN 5975-01-003-8937
NSN 5895-01-006-7932
NSN 5895-01-466-9965