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 5925-01-337-7044
NSN 5960-01-055-9678
NSN 7035-00-205-8767
NSN 5950-01-027-9560
NSN 5915-01-154-4721
NSN 5965-00-255-3889
NSN 2925-00-671-9561
NSN 6145-00-815-7154
NSN 6320-01-046-5228
NSN 5996-01-007-2147
NSN 5998-01-333-6229
NSN 6240-00-952-1906