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 5935-01-080-1507
NSN 5965-01-181-3140
NSN 6320-00-242-3300
NSN 5855-00-361-0167
NSN 6645-01-157-9103
NSN 5905-01-490-4213
NSN 6685-00-369-6912
NSN 5985-01-414-8938
NSN 5835-01-492-4318
NSN 5855-01-337-0245
NSN 6645-01-549-0935
NSN 5925-01-010-2925