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 6135-01-108-6057
NSN 6110-01-423-5138
NSN 6110-01-424-0612
NSN 5950-01-605-3104
NSN 6130-01-547-5792
NSN 5985-01-462-1845
NSN 5975-00-286-8506
NSN 2925-01-629-9416
NSN 5925-01-255-6144
NSN 6150-01-355-3510
NSN 5930-01-080-3706
NSN 5855-00-294-7532